W7iuv Loop

http://dxworld. Cardioid Loop Antenna: This is an amalgamation of the loop antenna and longwire. com Subject: Re: [TS930S] TS-940S Phase-Lock-Loop Problems? Drop your RF unit down (rig up on it's left side) and resolder all around the VCO area, which is about the front 2-3" of the board. My "previous best" solution was using the DX Engineering DV-40-P 40M phased array as a 160M RX antenna, but in the "both" mode, there was no directivity that I could tell. (W7IUV version); 20 m T2FD, 30 m inv. The rotary Mini Diamond receiving loop, Mini Whip stick, Inverted V dipole w/apex 10m and 60m long BOG has been prepared for reception on the antenna switch connected to 5MHz band pass filter and connected to W7IUV high IMD preamplifier. 73's nov95. , 200 m 270º/90º Bev. W1AEX and the Giant Cactus. (W7IUV version); raised, 4 loop K9AY, 6x19x6 m Ewe 135º, 14 m low noise LF/MF Vertical. 4 1039 @ cq vk4yb qg62 1306 -24 0. I still run W7IUV preamps on my K9AY loops as well as some other RX antennas though have been thinking about changing one out for a Norton type. The shielded Burhan's loop described here, is a good performer on 630m and below, while a tuned wire loop can be just as effective if resonated to 630m. The contraption was held together on a broomstick. Top Score, Multi-Op. First, remember that the EWE, K9AY loop, flag, pennant, delta, etc. Occasional transmitter fault- offs and they were on with a guitar interval signal with male / female announcements before scheduled sign on at 0300 (Al Muick, Whitehall PA USA, Microtelecom Perseus / Wellbrook ALA1530P active loop dxldyg via WORLD OF RADIO 1664, DX LISTENING DIGEST) Hello, Voice of Broad Masses, Asmara on 7175 and 9705 heard at. Since then DXers, ham operators and comerical enterprises, all have raved and ranted about this loop, calling it "miraculous", "stunning" and the antenna that beats anything. Top # NA + SA QSOs by European station. W2UP Rotatable Low Band Receiving Delta Loop; W7IUV Amplifier Card; W7IUV preamp. Vintage Longwave Receivers - Part 4. Mark Connelly, WA1ION – 18 JUL 2002. (W7IUV version); raised, 4 loop K9AY, 6x19x6 m Ewe 135º, 14 m low noise LF/MF Vertical. I turned the receiving side to an external K9FD RX-loop with W7IUV pre-amplifier and found that it does not help so much. These days RX antennas are the VE7SL multiturn loop or the TX vertical, both of which have their own merits depending on the conditions at the time. Also have 3 W7IUV amplifiers with 2SC5551 transistors. com Lot's of MF/LF stuff here. , 200 m 270º/90º Bev. Especially at 160 and 80 meters loop area is small describes the making of a W7IUV preamp3 which offers a gain of 20 dB and OIP3 of 41 dBm. 2020: Lepší podmínky šíření v novém 25. Can also support other MIDI current loop interface configurations. From: [email protected] com W7IUV Radio Antenna Preamplifier Kit. +++++ Ham Radio Collection +++++ 6 Meters. org netnews editor (based reflector news) rein, w6sz [email protected] The Flag Antenna is in the family of terminated loops that can yield a cardioid (heart-shaped, single-direction null) pick-up pattern. the loop using 'homebrew' construction, we also offer the AYL-M kit that includes a mast, wire and all the hardware needed to construct the antenna. Loop Antenna Wideband LNA. Loop Antenna Wideband LNA. The RF Broadband Preamplifier was designed mainly for Crystal Radio sets. +++++ Ham Radio Collection +++++ 6 Meters. Was anderes ist es mit sehr kurzen Stäben oder kleinen Loops, da lohnt es. Information on using the program and simulating the amplifier can be found at "Simulating Circuits and Systems with Serenade SV", by David Newkirk, W9VES, January 2001, QST, Page 37. Bynoe oversees the firm’s mergers and acquisitions practice in the. V, 6x19x6 m Ewe 135º, raised, 4 loop K9AY (Carlos Gonçalves, Lisboa, Portugal, via Dario Monferini, playdx yg via DXLD) That should really stand out, 0. net via DXLD) ** U S A. WWVB at 60 kHz was booming in at S-9 above S-4 noise…time will tell, but the effort expended seems worthwhile right now. Iza toga je preporučljivo pretpojačalo jer sve te petlje imaju dosta gušenja. Number of bids and bid amounts may be slightly out of date. - NS8O's 160m. Larry Molitor - W7IUV: The "Flag" and "Pennant" antennas show great promise for those who live on less than full section farms. We specialize in detailed plans and kits for the technically inclined. Butternut 9-Band Vertical Antenna. com) I have been experimenting with receiving loop antennas now for the last 3 years, building several Ferrite Sleeve Loop antennas, Air Loop antennas and Active Broadband wire loop antennas. Novinky: 10. it increments or decrements a variable which is then read out in the main loop of the program. 5 wavelength), a Receive Loop is much smaller (most are less than 0. 2N5109/2N3866 Low-noise Broadband HF Pre-amplifier Ver. hardware (30) Assembly & Measurement of a 3dB Splitter - 22. Ward Silver, NØAX Beverages and Other Low-Band Receive Antennas H. http://dxworld. These tend to be very small and not need much height to work properly. Cardioid Loop Antenna: This is an amalgamation of the loop antenna and longwire. Everything is documented in RxAnt_Flags_2. Wellbrook though redesigned the amp later on for higher. The band was so noisy and the s/n ratio was surprisingly not improved on this system. If you're willing to build your own antenna you might try a loop antenna with some kind of preamp like w7iuv's design. com) I have been experimenting with receiving loop antennas now for the last 3 years, building several Ferrite Sleeve Loop antennas, Air Loop antennas and Active Broadband wire loop antennas. Some of these are quite useful, some are not, and some are for specialty purposes only. 2017-01-29 10:36 WE2XPQ 0. 136/475kHz ATU (G0FTD) 250-400 µH variometer (G0MRF) 472 kHz small loop experiment (VK1SV) 630 m 8-circle antenna (NO3M) 630 m loaded inverted L Antenna (VK5FQ) 630 m transmit experiment with a baloon lifted antenna (SQ2BXI) Antennas for 136 kHz (ON7YD) * A receive only vertical (WA3ETD). Some initial experimenting with the number of turns on the inductors was based on these available values of fixed capacitors. Low-Band High-IP3 LNA - W7IUV. The simplicity of the hardware and the circuit is fascinating. The shielded Burhan's loop described here, is a good performer on 630m and below, while a tuned wire loop can be just as effective if resonated to 630m. The 85 foot receive loop works very well from the bottom of the broadcast band through 40 meters. Rotatable Flag Antenna by Larry Molitor - W7IUV Published with permission; more on W7IUV's home page email [email protected] Topbanders: After reading W7IUV's comments and other recent posts on various members of the "loop-like" RX antenna family, some of my accumulated notes may be useful. This was quickly followed by two other QSOs as both W7IUV and NC0B noticed the "new guy" on the band! Over the next several days I got around to constructing the "new" variometer depicted in Figure 4 and this boosted my antenna current to about 1. Rar! Ï s î›tÀ D ¡ &|~ I fI 3 Taunting in the 90s\read me. RECEIVING FLAG COMPARISIONS K9AY w/R-C Termination – W7IUV. Designs and Benchmarks. BADX 2009 "DX Clams" July 30-31 (UTC), Granite Pier, Rockport MA (42°40'N 70°37'W) The following reports are from participants of the Boston Area DXers (BADX) annual summer mediumwave expedition to 'the Pier. A great way to pass a cold winter afternoon is to homebrew some preamps. Also have 3 W7IUV amplifiers with 2SC5551 transistors. home-loop dans le grenier, sous le toit, d'abord réalisée pour les bandes basses de 40 à 80 m, puis modifiée pour la bande des 20 m. Bynoe oversees the firm’s mergers and acquisitions practice in the. You can use it as high IP preamplifier, buffer amplifier or small driver. Given the low cost, the amount of time to build, and the immediate on-air results, this approach for an MF load coil/match assembly is a worthwhile project for anyone wishing to explore MF. The RX vertical appears to perform well at first glance, NDBs received on my loop and E-Probe were of equal or better strength with similiar daytime noise. About 160 Meter Vertical The resource is currently listed in dxzone. Andrews said he was an early applicant for a Part 5 license in 2003, after the FCC turned away from its own proposal to allocate a band on 2200 meters. We have tried the K6SE delta-EWE, a pennant receive-only antenna that has reasonable dimensions: total wire length is 72 feet, 28 feet on the base side and the high apex is about 17 feet. The antennas are also used in combination via his Quantum Phaser, when DXing the broadcast band. Studio A and B Station Pictures. JRC NRD-545DSP & PERSEUS sdr; Quantum Phaser, homemade amp. 1 1039 @ cq vk4yb qg62 1308 -23 0. Ima puno iskusnijih od menestvar RX LOOP antene za 160 i 80m. a Broadband Active Loop Antenna, looking at the Mobius, Conventional Shielded and Wire Loops Everett Sharp N4CY ([email protected] If you're willing to build your own antenna you might try a loop antenna with some kind of preamp like w7iuv's design. For our contest group PA6Z we needed some good receiving antennas for the low bands (160m, 80m and 40m). The shielded Burhan's loop described here, is a good performer on 630m and below, while a tuned wire loop can be just as effective if resonated to 630m. I noticed that the fading of the signal from CY9C coming at the different time from both antennas. From the original design I duplicated the Hi-Z amplifier (actually I found J310 and J271 only by Mouser) with a couple of minor modifications: 0. (W7IUV version); raised, 4 loop K9AY, 6x19x6 m Ewe 135º, 14 m low noise LF/MF Vertical. Information on using the program and simulating the amplifier can be found at "Simulating Circuits and Systems with Serenade SV", by David Newkirk, W9VES, January 2001, QST, Page 37. 5 Ghz e il software SDRSharp mentre l'antenna è una Delta-Ewe con preamplificatore +20 dB (W7IUV self-made). Amateur Radio Licenses Map Mash-Up; Antarctica; Antigua Caribbean vacation & holiday guide, Antigua Nice Ltd. Receive Loop Preamplifier, G3NYK: Swl active hula hoop square loop rx antenna: Simple Four Metre Pre-Amplifier, G4IZH: The 50MHz Assistant: The SID Seizer is a VLF/LF receiver: U301 FET preamplifier: Wideband PreAmp's for HF/VHF/UHF: Wideband active loop antenna 3-30mhz: Yaesu FT 847 70mhz pre-aplifier, CT1FFU: Commercial: Build this Universal. This was only test of this small but great antenna. The other receive antennas' outputs can be, at worst, about -30 to -35 dBi for a delta-EWE loop; see more detailed data in the new chapter in ON4UN's book. 2/18/2015 (Jim Evans, Germantown TN, Perseus, IC- R75, ICF-SW7600G, PL-880, PL-660, PL-380, Random Wire, Wellbrook Loop. Abecedně řazený seznam literatury, programů a pomůcek, který nabízíme ke stažení. Plaque Donor. You can use it as high IP preamplifier, buffer amplifier or small driver. Bynoe (Age 62): Since February 2009, Mr. For decades, Clifton Laboratories has been at the leading edge of Ham Radio technology, making preamplifiers and filters with unparalleled performance characteristics. software-defined-radio measurements contesting hardware antennas ed1r bandpass-filter amplifier filter funkamateur modifications powersdr a73a ft1000mp tapr-vna ubuntu vnwa win-test antenna-simulation bandscope beverage-antennas continuous-integration cw-skimmer dj-console docker dx-peditions fa-sdr-trx flexradio it-stuff kit linux my-podcast. Položky nejsou dál řazeny např. After a review of the net data, I ended up building a single 2N5109 and a dual 2N5109 version. This is the same circuit as our prior RF Preamplifier Kit (RF-Preamp), but now comes with a circuit board. 4,28 high Load resistor: 937 ohms (series/parallel combination of Ohmite OY 1 watts). 4dB with more QSOs to follow - including 2. ) To help reduce occasional line noise, a common problem in Florida, I use an MFJ-1026 Noise Canceller that uses the transmitting antenna as a noise. 2 m dish helix fed K8YAH Ron 2 x 45 loop yagi WJ9F Russ 2 x 45 loop yagi. This was only test of this small but great antenna. The reason for this was practical; I could not find a way to mount the controls on the existing surface where it would look nice. Hmmm! Po teoriji dela CQ antena zaradi svoje trodimenzionalnosti tudi na majhnih višinah, iz luknje (če že ne iz vodnjaka, HI), ni občutljiva na okoliške predmete, ima zelo nizek kot sevanja, opisujejo jo kot pravo DX anteno - kot ustvarjena zame. 0 m dish K7ZTM Pete 2 x 45 loop yagi N8AJD Steve 45 loop yagi K8TL Tom 1. Everett N4CY. 136/475kHz ATU (G0FTD) 250-400 µH variometer (G0MRF) 472 kHz small loop experiment (VK1SV) 630 m 8-circle antenna (NO3M) 630 m loaded inverted L Antenna (VK5FQ) 630 m transmit experiment with a baloon lifted antenna (SQ2BXI) Antennas for 136 kHz (ON7YD) * A receive only vertical (WA3ETD). Di samping itu, loop ini memerlukan ferrite transformer kecil yg dipasang disambungan antara ladder line dan 50 Ohm coax (yg juga berfungsi sebagai balun ). 8 kHz) bands now are available to radio amateurs who have notified the Utilities Technology Council of their intention to operate and did not hear anything back during the ensuing 30 days. Talks, announcements, references to Rivadavia, 34332 (Carlos Gonçalves, coastal site in Portugal, JRC NRD-545DSP & DRAKE R-E; Advanced Receiver amp. RF Circuit Building Blocks Page. The simplicity of the hardware and the circuit is fascinating. Receiving antenna's for PA6Z made by PA9M. W7IUV Radio Antenna Preamplifier Kit - MTM Scientific. W7IUV Beverage Pre-Amp (2N5109) | Contesting & SDR In preparation of the upcoming CQWW 160m Contests my friend Hannes, DK1NO was so kind to give me one of his W7IUV broadband, high IP3 preamplifier. (Alternate link for schematic. Enake lastnosti ima tudi delta loop. These days RX antennas are the VE7SL multiturn loop or the TX vertical, both of which have their own merits depending on the conditions at the time. W7IUV Larry Quincy WA, USA DN07DG (QRB 8355 km) 432: 4,3m DISH (14f), 0,2dB NF H. In addition use a magnetic loop for receive. I still run W7IUV preamps on my K9AY loops as well as some other RX antennas though have been thinking about changing one out for a Norton type. I ended up with a loop that is oriented to favor reception from the north and south on one edge of my property, and another loop oriented to receive from the east and west in another area of the yard. I tested the K ‘n P model preamp which I had built for a friend against a W7IUV which I had built some years before ‘dead bug” style for myself and both showed about the same gain and low noise. Swl active hula hoop square loop rx antenna: Simple Four Metre Pre-Amplifier, G4IZH: The 50MHz Assistant: The SID Seizer is a VLF/LF receiver: U301 FET preamplifier: Very High IP3 LNA for 144 MHz, S53WW: Wideband PreAmp's for HF/VHF/UH: Wideband active loop antenna 3-30 MHz: Yaesu FT 847 70mhz pre-aplifier, CT1FFU: Commercial. low noise 1691 mhz lna amp using maam12032 ic's by kocsis (on. The leftmost Radio Shack antenna rotator controller turns the 20m/17m delta loop. Building a simple Receive Loop Antenna for SWLing by K 0 J Q Z Many months ago I built a few differnet Hula Hoop based receive antennas and was pleased with the results. 5 foot square shielded loop which is located in my shack, and the MC1350 IC gets permanently altered when I transmit on 160 meters using my 53 foot base loaded vertical. As a final note, after running the two loops for almost 2 years, I built and installed a W7IUV broadband preamp at the feedpoint of the North-South loop. Simple receive only loop antenna constructed by Phil VK5SRP - Page 7 I have added 100uH RF chokes bypassed by 0. 0 m dish helix fed KE7NR Don 2 x 45 loop yagi N7RYW Bill 2. What to Listen to using Vintage LW Receivers. Polako krenula razmišljanja za zimu o low band, a posebno top band aktivnostima. This antenna consists of a single loop of wire, supported by two wooden cross beams, tuned by our air variable capacitor. RX loop « natrag naprijed imam PP od W7IUV(imate staru i novu verziju) i moje preklapanje za 4 smjera 2 releja. You can use it as high IP preamplifier, buffer amplifier or small driver. Preamp Noise Figure. The band was so noisy and the s/n ratio was surprisingly not improved on this system. (Alternate link for schematic. This link is listed in our web site directory since Saturday Jan 31 2009, and till today "W7IUV Low Band Preamp" has been followed for a total of 2167. Lisbon CG JRC NRD-545DSP, PERSEUS & DRAKE R-E; Advanced Receiver amp. 0 3 R6 150R (150 Ω) – Brown Green Brown R7 39R (39 Ω) – Orange White Black R8 150R (150 Ω) – Brown Green Brown Then install and solder the Diode (D1) and the two axial inductors (L1 and L2). Building a LOW-Band Receiving 4-Square Antenna Hi-Z Antennas ™ The Hi-Z Antennas 4-square receiving system utilizing shortened vertical elements has been designed to provide a relatively small footprint high-performance receiving antenna for the Amateur low bands covering 160 through 40 meters. 1N4007 diode to protect from polarity inversion. There are times, however, where a preamp at the feedpoint makes a huge difference. It is not as pretty as the $100. Plaque Winner. So I decided to prepare a bit for the trial. 8 dB maximum noise figure. The reason for this was practical; I could not find a way to mount the controls on the existing surface where it would look nice. About W7IUV Low Band Preamp The resource is currently listed in dxzone. The 85 foot receive loop works very well from the bottom of the broadcast band through 40 meters. – TX/RX leaking – Polarization filter HWF – Twisted pair lines – HWF single loaded loop construction – HWF dual loaded loop construction – Multiples loaded loops RX arrays. Hice un viaje de ida y vuelta de 400 millas ayer para recoger artículos más grandes que estamos pidiendo prestados para VK9CZ. AMPLIFIER DIY KIT for Active Magnetic HF Antenna 3MHz-30MHz for Hula Loop Radio - $19. Gain is up to 18dB and there is also build in variable ATT. long made with two parallel RG58 (Z = 100 ohm) - 180 degrees phasing by inverting the feedlines at the T junction. WWVB at 60 kHz was booming in at S-9 above S-4 noise…time will tell, but the effort expended seems worthwhile right now. Prilagođenje je obično promjenjljivi kondenzator na 50 Ohm. Larry is also WH2XGP Part 5. ; raised, 4 loop K9AY, 30 m 180º/0º mini-Bev. Some loop antennas are tuned with a variable capacitor which can offer a high amount of 'Q' and so can potentially reduce receiver overloading if you have multiple strong local signals. He QSO’d on 432 CW G4DHF and K2DH, and on JT65B RK9AT, GM4ISM, OK2UZL, K5QE, G4CCH, W7IUV, LU1C, SM7GVF, YO3DDZ, DL8GP, DL1AAH, AJ4MW and BD4SY. all operate on the same principle -- a terminated loop. By these principles, LA400 responds to the magnetic field rather than the electric field, thus. Input Impedance and Gain. My "previous best" solution was using the DX Engineering DV-40-P 40M phased array as a 160M RX antenna, but in the "both" mode, there was no directivity that I could tell. This was only test of this small but great antenna. Comparison Chart of Different Rx antennas. Currently stored in the garage. As described in the section above, this. http://dxworld. A shielded loop antenna is less susceptible to nearby electrical interference sources, thanks to the electrostatic shielding of the loop afforded by the grounded metallic conduit enclosing the wire coils. The idea of a rotary Beverage antenna for top. Designs and Benchmarks. Mark Connelly, WA1ION - South Yarmouth, Cape Cod, MA, USA - rev. Just for record i have included a list of OSCAR-13 operators with their call letters and antennas used for downlink Mode-S from 2400. Učinkovitost z moje lokacije. com W7IUV Radio Antenna Preamplifier Kit. , 200 m 270º/90º Bev. ' Chris Black N1CP; R-75, 16 x 25-ft portable Flag. Top # NA + SA QSOs by European station. Plaque Winner. However, it has a frequency response up to 25 – 30 Mhz allowing it to work well in other applications. , 270 m 145º/325º Bev. Antennas, ground systems. Going from a 4 ft to 6 ft loop signal strength at the bottom of the band doubles. So I decided to prepare a bit for the trial. When I said 20db of gain, it was actually 10db. loop-alu est construite , comme son nom l'indique en tube d'aluminium, installée en extérieur, vu ses dimensions. 5/24/2013 Antenna Modeling - Getting Started 14 “I don’t think anyone has made an Larry W7IUV THANK YOU!! 5/24/2013 Antenna Modeling - Getting Started 15. This UHF wideband amplifier (Ultra High Frequency amplifier) has a total gain of 10 to 15 dB in the [] Car Antenna Amplifier Circuit. Everything is documented in RxAnt_Flags_2. I elected to start from just the schematic and comprehensive design notes, and also wanted to try to develop some new skills useful in future projects. From the original design I duplicated the Hi-Z amplifier (actually I found J310 and J271 only by Mouser) with a couple of minor modifications: 0. Because of some. Mark Connelly, WA1ION – 18 JUL 2002. 00+ Broadband RF Preamp. Boucle de 42 mètres. 144 MHz Hybrid LNA - W6IOJ. The preamp for this loop is designed by Larry W7IUV on his highly informative website, here: w7iuv. Már fülelni is érdemes, élmény hallgatni a hatalmas börsztöket. On October 17, W7IUV and VK4YB completed a JT9 contact, possibly the first US-to-DX contact between radio amateurs on 630 meters. Antennas, ground systems. 2 This is our enhanced version of the W7IUV Low Band (160,80;40 meters. This link is listed in our web site directory since Saturday May 12 2007, and till today "160 Meter Vertical" has been followed for a total of 5842 times. Per l'ascolto ho utilizzato il ricevitore SDR FDM S1 Elad abbinato ad un PC Intel Core i7-4771 CPU 3. Some of these effects are seen with "NVIS" antennas also and are highly dependent on ground conditions. , 270 m 145º/325º Bev. Built two preamps today. N8CQ: Jerry gabercr(x)nc. This is very simply preamplifier module with 2N5109 transistor based on W7IUV design. This preamp is generally used at the HF antenna (dipole, long wire, loop, beverage, etc. Gain is up to 18dB and there is also build in variable ATT. Receive active 4-sq vs Shared apex loop performance, Chuck Dietz <= Re:. These tend to be very small and not need much height to work properly. The second recent project was a preamplifier for a double half delta loop DHDL receiving antenna based on a design by W7IUV. Hi Joe, an easy and cheap starting point (weekend project) is the W2PM Mini-Diamond loop connected thru W7IUV preamplifier and KD9SV front-end saver to Ext. 50 w,,1 x 13b2,160 watts,elevation. 1 1039 @ w7iuv vk4yb 73 1302 -18 0. D1 1N4002 (the line indicated is the cathode and should go to the positive supply. Topics Search. Image not available. A smaller 12" loop of 8 ga copper wire was supported inside the large loop and tuned with a 365 pf variable cap. RX antenna preamplifier PCB with 2N5109 design by W7IUV, front. 2020: Vyšla nová verze Trusted QSL 2. On 1296 he worked on CW UT5JCW and on JT65C VK7MO and OK2DL. The pre-amp isn't really needed for the gain, but it relaxes the requirements for decoupling the coax. , 270 m 145º/325º Bev. Resources listed under Preamp category belongs to Technical Reference main collection, and get reviewed and rated by amateur radio operators. ; raised, 4 loop K9AY, 30 m 180º/0º mini-Bev. , 200 m 270º/90º Bev. 79 Manual -scaled. Articles on This Site. Da le soproga ne izve, HI! 6. I had my DX Engineering DV-40-P switched in the “Both” or 180 degree position and heard the weak signal DX with -130 dB noise. Basic TX Audio Gain Settings in OpenHPSDR mRX PS. My “previous best” solution was using the DX Engineering DV-40-P 40M phased array as a 160M RX antenna, but in the “both” mode, there was no directivity that I could tell. Its name comes from its horizontal rectangular shape. I used transformers in > and out on my Loop Preamp, to give a match to 50 ohms. Delta loop horizontale 1,8, 3,5, 7 et 10 MHz. Just for record i have included a list of OSCAR-13 operators with their call letters and antennas used for downlink Mode-S from 2400. Top Score, Multi-Op. } Tower Replacement : KD9SV Front End Saver -73mag Feb 97 : Comb Generator - Ham Radio July 1988 : TR Log 6. Low-Band High-IP3 LNA - W7IUV. Iza toga je preporučljivo pretpojačalo jer sve te petlje imaju dosta gušenja. K9AY loop (150 meters of new coax cable): it worked as it should, with a good F/B in the four directions, but the noise level was still worse. This is very simply preamplifier module with 2N5109 transistor based on W7IUV design. 5 wavelength), a Receive Loop is much smaller (most are less than 0. Testing a new receiving loop antenna that I built today. Basic TX Audio Gain Settings in OpenHPSDR mRX PS. V, 6x19x6 m Ewe 135º, raised, 4 loop K9AY (Carlos Gonçalves, Lisboa, Portugal, via Dario Monferini, playdx yg via DXLD) That should really stand out, 0. My receive antenna will consist of a Hula Hoop (called a Hula Loop Antenna) with about 9 feet of thermostat wire through the center of the loop. > I've measured the W7IUV preamp input and output impedances and also > modeled the W7IUV preamp using LTspice, and both methods yield input > and output impedances. , 200 m 270º/90º Bev. 3) 10T or so 10ft diameter VE7SL rotatable loop with modded W7IUV head amp (added power up the coax and choked to drive 400ft RG6 quad) - Last night it was used beaming to VK on 235degT which is kind of the worse direction dog fence noise wise but. Con also caught signals from Larry, W7IUV, in central Washington state, operating on 630m as WH2XGP. Saya pesan barang langka seperti toroid Amidon dan varactor Mouser secukupnya saja sesuai keperluan pribadi. The simplicity of the hardware and the circuit is fascinating. a Broadband Active Loop Antenna, looking at the Mobius, Conventional Shielded and Wire Loops Everett Sharp N4CY ([email protected] Weak signal with fading and not the best audio, keeping above the noise most of the time. DX Engineering Getting Started Packages. Andrews said he was an early applicant for a Part 5 license in 2003, after the FCC turned away from its own proposal to allocate a band on 2200 meters. For dipoles I would look at T2FD designs since they're built with space constraints in mind (iirc they were originally used on ww2 naval vessels). I have an AMECO PT-3 Pre-Amplifier that had the separate antenna and separate receiver options installed. Mtm scientific loop antenna keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website. I used transformers in > and out on my Loop Preamp, to give a match to 50 ohms. 73's jul95. 73, Larry - W7IUV P. Still other space-conscious options that work well include the W7IUV rotatable flag, which is related to the family of terminated loops, much like the K9AY loop, while offering a significant improvement in performance and the EWE antenna which has been very well optimized by Mike, WA3TTS in west central PA. Larry W7IUV has a rather. 144 MHz Hybrid LNA - W6IOJ. Some loop antennas are tuned with a variable capacitor which can offer a high amount of 'Q' and so can potentially reduce receiver overloading if you have multiple strong local signals. (W7IUV version); 20 m T2FD, 30 m inv. The W1AEX YouTube Page. 100uF/25V electrolytic capacitor instead of 1uF. 1uF capacitors from the supply line to the collector resistors of the two transistors and 100K resistors to dissipate any static on the loop. Triangle de 60m et échelle à grenouille. The simplicity of the hardware and the circuit is fascinating. Cardioid Loop Antenna: This is an amalgamation of the loop antenna and longwire. This antenna is easy to set up, it has a small footprint (10x10 m) and it provides four directions for receiving. 1296 MHz GaAs LNA - RA3WDK. com is basically now QRV with his big 10 m dish. 3h mentre l'antenna, è una Loop preamplificata autocostruita. Given the low cost, the amount of time to build, and the immediate on-air results, this approach for an MF load coil/match assembly is a worthwhile project for anyone wishing to explore MF. 1N4007 diode to protect from polarity inversion. receiver bandpass filter and mmic amp kit, see (comp placement) (smparts placement) (eyelet placement) $80. Although I can't imagine using the former for inductors Russ Edmunds. Going from a 4 ft to 6 ft loop signal strength at the bottom of the band doubles. The other receive antennas' outputs can be, at worst, about -30 to -35 dBi for a delta-EWE loop; see more detailed data in the new chapter in ON4UN's book. For decades, Clifton Laboratories has been at the leading edge of Ham Radio technology, making preamplifiers and filters with unparalleled performance characteristics. I turned the receiving side to an external K9FD RX-loop with W7IUV pre-amplifier and found that it does not help so much. At 07:00 PM 11/27/00 -0500, Gary Breed wrote: > Topbanders: > > After reading W7IUV's comments and other recent posts on various members > of the "loop-like" RX antenna family, some of my accumulated notes may be > useful. 1 1039 @ cq vk4yb qg62 1308 -23 0. 8 kHz) bands now are available to radio amateurs who have notified the Utilities Technology Council (UTC) of their intention to operate and did not hear anything. 5 dB at 30 MHz. general purpose 1 to 1000 mhz wide band amplifier by dave miller. W7IUV Low Band and HF Preamp Posted on October 15, 2016 by GM1004SWL Well I finally got the time to build my own preamp for the MW and Shortwave bands, as I posted earlier I was thinking about buying a wellbrook preamp for my super KAZ antenna. Preamp module with 2N5109. 2 m dish helix fed WA8WBP Ralph 1. We think a single Op Amp with two 180 degree inputs, and the hybrid combiner can be made in one small unit. Also have 3 W7IUV amplifiers with 2SC5551 transistors. 1 1039 @ cq vk4yb qg62 1304 -23 0. Per l'ascolto ho utilizzato il ricevitore SDR FDM S1 Elad abbinato ad un PC Intel Core i7-4771 CPU 3. I just finished building 6 Improved WellGood Loop amplifiers using SMD 2SC5551 transistors, 4 LZ1AQ Loop amplifiers and 2 Modified M0AYF loop amps with SMD 2SC5551 transistors. Dmitrij ua3ptw(x)inbox. , raised, 4 loop K9AY in SW coast Pubblicato da. 4733 lines (4732 with data), 179. 3) 10T or so 10ft diameter VE7SL rotatable loop with modded W7IUV head amp (added power up the coax and choked to drive 400ft RG6 quad) - Last night it was used beaming to VK on 235degT which is kind of the worse direction dog fence noise wise but. For decades, Clifton Laboratories has been at the leading edge of Ham Radio technology, making preamplifiers and filters with unparalleled performance characteristics. Preamp Noise Figure. The shielded Burhan's loop described here, is a good performer on 630m and below, while a tuned wire loop can be just as effective if resonated to 630m. The rotary Mini Diamond receiving loop, Mini Whip stick, Inverted V dipole w/apex 10m and 60m long BOG has been prepared for reception on the antenna switch connected to 5MHz band pass filter and connected to W7IUV high IMD preamplifier. My RFI Adventures with LiftMaster Garage Door Openers. ; 20 m T2FD, 30 m 180º/0º mini-Bev. He also plans to be QRV on 23 cm very soon. This is very simply preamplifier module with 2N5109 transistor based on W7IUV design. W2UP Rotatable Low Band Receiving Delta Loop; W7IUV Amplifier Card; W7IUV preamp. Butternut 9-Band Vertical Antenna. (Alternate link for schematic. Report, inviato via email a [email protected] Basic TX Audio Gain Settings in OpenHPSDR mRX PS. Larry is also WH2XGP Part 5. W7IUV preamplifier for LB antennas - Revision 5 (built 2003) Hi all, as I received several emails with questions about the preamplifier which I am using for my LB external RX antennas like W2PM MiniDiamond loop, EWE loop, K9FD loop etc. Plaque Winner. Some loop antennas are tuned with a variable capacitor which can offer a high amount of 'Q' and so can potentially reduce receiver overloading if you have multiple strong local signals. JRC NRD-545DSP & PERSEUS sdr; Quantum Phaser, homemade amp. A shielded loop antenna is less susceptible to nearby electrical interference sources, thanks to the electrostatic shielding of the loop afforded by the grounded metallic conduit enclosing the wire coils. I tested the K ‘n P model preamp which I had built for a friend against a W7IUV which I had built some years before ‘dead bug” style for myself and both showed about the same gain and low noise. 2-meter) circumference loop made of semirigid coax on a PVC pipe frame for receiving. ACOM 2100 HF + 6 Meter Linear Amplifier. Last uptodate of OSCAR-13 mode-S user list dish KB7CNN Bill 2 x 45 loop yagi W7IUV Larry 3. Talks, announcements, references to Rivadavia, 34332 (Carlos Gonçalves, coastal site in Portugal, JRC NRD-545DSP & DRAKE R-E; Advanced Receiver amp. K9AY++ RX antenna system with BPFs, Preamp, Controller and much more. Flag Antenna Construction and Test Results. 25m band RX/TX masthead Pre-amplifier has be. The New Mini-Kits High Performance VHF 2M RX/TX masthead Pre-amplifier has been desig. 0 m dish K7ZTM Pete 2 x 45 loop yagi N8AJD Steve 45 loop yagi K8TL Tom 1. No Interference Reported Andrews said he was an early applicant for a Part 5 license in 2003, after the FCC turned away from its own proposal to allo-cate a band on 2200 meters. Das Platinenlayoutfile ging leider verloren, aber mit dem angegebenen Schaltplan ist die Platine sicherlich rasch wieder erstellt. The Flag Antenna is in the family of terminated loops that can yield a cardioid (heart-shaped, single-direction null) pick-up pattern. So even with a bare wire connected directly to that wood, the return path is essentially infinite because the return loop is very far removed. com/user/loughkb?sub_confirmation=1 If you want me. Given the low cost, the amount of time to build, and the immediate on-air results, this approach for an MF load coil/match assembly is a worthwhile project for anyone wishing to explore MF. This page was last updated: 24-Apr 10:30. Checked 11730 and found the usual weak carrier with no discernible audio. Can also support other MIDI current loop interface configurations. Loop is made out of coaxial cable, only the shield is. This is very simply preamplifier BOX module with 2N5109 transistor based on W7IUV design. These tend to be very small and not need much height to work properly. I'm a big fan of the loop stick and have seen them work extremely well with. , 270 m 145º/325º Bev. masek(x)volny. 00+ Broadband RF Preamp. 432 and above eme news march 2013 vol 41 #3 editor: al katz, k2uyh; dept. 711 to 2400. The preamp for this loop is designed by Larry W7IUV on his highly informative website, here: w7iuv. ; raised, 4 loop K9AY, 30 m 180º/0º mini-Bev. Gain is up to 18dB and there is also build in variable ATT. ; 20 m T2FD, 30 m 180º/0º mini-Bev. The pre-amp isn’t really needed for the gain, but it relaxes the requirements for decoupling the coax. Checked 11730 and found the usual weak carrier with no discernible audio. More discussion of it here is not necessary. (W7IUV version); raised, 4 loop K9AY, 6x19x6 m Ewe 135º, 14 m low noise LF/MF Vertical. About preamps for ham radio use category is a curation of 37 web resources on , Mizuho products, The 50MHz Assistant, 432MHz Low Noise Preamp. RF Circuit Building Blocks Page. 432 MHz units and antenna. W7IUV Flag Details and Preamp. Setup Guide for the OpenHPSDR mRX PS CFC Audio Tools. (Alternate link for schematic. Figures 6 and 7. W1FB preamp modifications by WD8DSB Failure Mode Description Built a W1FB preamp (Aug 1988 QST) for use with my 4. A Geminidák maximuma december 14-re. My RFI Adventures with LiftMaster Garage Door Openers. 144 MHz Hybrid LNA - W6IOJ. , 270 m 145º/325º Bev. 0 m dish K7ZTM Pete 2 x 45 loop yagi N8AJD Steve 45 loop yagi K8TL Tom 1. - load resistors with1 watt OY series-parallel: 590 ohm on the front loop and 607 ohm on the back loop - transformers (impedance ratio 600/100 ohm): 5 by 2 turns on binocular BN73-202 - both phasing lines 4. Posted 11/27/12 2:46 AM, 29 messages. Hi Joe, an easy and cheap starting point (weekend project) is the W2PM Mini-Diamond loop connected thru W7IUV preamplifier and KD9SV front-end saver to Ext. High-IP3 Push-Pull LNA with 2N5109. So even with a bare wire connected directly to that wood, the return path is essentially infinite because the return loop is very far removed. 3 and 17 MHz. Contest Update Issues. W7IUV Beverage Pre-Amp (2N5109) | Contesting & SDR In preparation of the upcoming CQWW 160m Contests my friend Hannes, DK1NO was so kind to give me one of his W7IUV broadband, high IP3 preamplifier. To: [email protected] Flag Antenna Construction and Test Results. , 200 m 270º/90º Bev. Er liefert bei einem Ausgangs-IP3 von 41 dBm eine Verstärkung von 20 dB. If you like my videos, please subscribe here: http://www. Con also caught signals from Larry, W7IUV, in central Washington state, operating on 630m as WH2XGP. The band was so noisy and the s/n ratio was surprisingly not improved on this system. The preamp for this loop is designed by Larry W7IUV on his highly informative website, here: w7iuv. +tests; WW2Y-K2WI Beverage design; YagiStress; ZeroFive Antennas; Countries DXCC. This was only test of this small but great antenna. loop-alu est construite , comme son nom l'indique en tube d'aluminium, installée en extérieur, vu ses dimensions. , 270 m 145º/325º Bev. SOLDERED Preamplifier for Magnetic Hula Loop HF Antenna AD8129. RX loop « natrag naprijed imam PP od W7IUV(imate staru i novu verziju) i moje preklapanje za 4 smjera 2 releja BP filtere sam također sam radio i za sve imam negdje dokumentaciju i nacrte pločica. I just finished building 6 Improved WellGood Loop amplifiers using SMD 2SC5551 transistors, 4 LZ1AQ Loop amplifiers and 2 Modified M0AYF loop amps with SMD 2SC5551 transistors. Antennas, ground systems. 00 Shipping. My RFI Adventures with LiftMaster Garage Door Openers. I turned the receiving side to an external K9FD RX-loop with W7IUV pre-amplifier and found that it does not help so much. general purpose 1 to 1000 mhz wide band amplifier by dave miller. This preamplifier is also be useful for regular commercial shortwave radio reception. ICP1 is pulled down when enough current (>7mA) arrives from the pulse sensor. I noticed that the fading of the signal from CY9C coming at the different time from both antennas. Along with me this year was Henrik KK6BQU (operating low-power nearby), and Gary KE6QR and Dave N6ORB were already set up in the same parking lot. Report, inviato via email a [email protected] You can use it as high IP preamplifier for RX antennas (beverage, DHDL, flag etc). Larry Molitor - W7IUV : The "Flag" and "Pennant" antennas show great promise for those who live on less than full section farms. Mark Connelly, WA1ION - South Yarmouth, Cape Cod, MA, USA - rev. html Return to Home Page. 25 amps - a theoretical improvement of about 4. 99 0 bids + £17. The PA18 UHF/VHF Pre-Amplifier Kit is an ultra-low-noise, mast-mounted preamplifier system that provides a gain of 15 dB and a 2. The filter's control section (above, right) was built onto a Lexan face that extends below the front plane of the speaker and at a tilt thus avoiding modifications to the stock speaker facing. Ewe antennas at 218 and 293 degrees, temporary 4 1/2 ft. I finally got the time to build the W7IUV preamp with circuits obtained from W1AEX and VK6YSF websites The performance of the preamp on MW and shortwave is a. 6dB-NF 10 GHz Low Noise Amplifier 144 MHz GaAs LNA 144 MHz LNA - YU1AW 432 MHz LNA MGF1402 432 MHz LNA - YU1AW 950. W4KAZ Broadcast Band Filter: jumper terminated on the business end with gator clips and a short length of #14 wire formed into an adjustable sized loop. , 300 m 225º/45º Bev. Article de Mégahertz juin 2000. Preamp module with 2N5109. Lisbon CG JRC NRD-545DSP, PERSEUS & DRAKE R-E; Advanced Receiver amp. , 200 m 270º/90º Bev. I had my DX Engineering DV-40-P switched in the "Both" or 180 degree position and heard the weak signal DX with -130 dB noise. Masing-masing dirancang untuk pemakaian di. This link is listed in our web site directory since Sunday May 1 2005, and till today "W7IUV 160 Meters vertical" has been followed for a total of 20089 times. , 80 m 300º/120º Bev. Per l'ascolto ho utilizzato il ricevitore SDR FDM S1 Elad abbinato ad un PC Intel Core i7-4771 CPU 3. If you like my videos, please subscribe here: http://www. In the W4KAZ skimmer implementation, several earlier versions of the SoftRock kit are also used. 6wl,1200 watts,xpol, 3y0pi,68. Variable termination Double Delta, W7IUV RF amplifier, ICE active 4-way splitter. 1uF capacitors instead of 0. 9917 kHz; and KLFF is on 889. Loop Antenna Wideband LNA. I noticed that the fading of the signal from CY9C coming at the different time from both antennas. Bynoe (Age 62): Since February 2009, Mr. Top # NA + SA QSOs by European station. Way back in 2006 I bought a Wellbrook ALA1530 Loop aerial. Some of these are quite useful, some are not, and some are for specialty purposes only. This is a complete kit less, cabinet, power transformer, and selector switch for $48. Running QRP, it was good to have the extra gain. Bynoe has served as a partner and Chief Operating Officer of Loop Capital LLC, a full-service investment banking firm based in Chicago, where he had been Managing Director since February 2008. Stealth Attic Antennas for DX and Contesting? Facts and Myths. 0 m dish helix fed KE7NR Don 2 x 45 loop yagi N7RYW Bill 2. Je použito osvědčené zapojení podle W7IUV verze 6. Polako krenula razmišljanja za zimu o low band, a posebno top band aktivnostima. I use a 17-foot (5. However, it has a frequency response up to 25 - 30 Mhz allowing it to work well in other applications. W1AEX and the Giant Cactus. ) Schaltung Die Schaltung wurde von W7IUV beschrieben und mehrfach adaptiert. ; raised, 4 loop K9AY, 30 m 180º/0º mini-Bev. The rotary Mini Diamond receiving loop, Mini Whip stick, Inverted V dipole w/apex 10m and 60m long BOG has been prepared for reception on the antenna switch connected to 5MHz band pass filter and connected to W7IUV high IMD preamplifier. W7IUV rotatable Flag construction data: all details and technical info on Larry's web site www. WWVB at 60 kHz was booming in at S-9 above S-4 noise…time will tell, but the effort expended seems worthwhile right now. Our Scientific Products are only available via Mail Order directly from us! We strive to provide great customer service. So instead I searched the internet and found plenty people building and using a preamp designed by W7IUV the circuit on paper looked easy enough for a novice builder like me. 5 wavelength), a Receive Loop is much smaller (most are less than 0. W7IUV Radio Antenna Preamplifier Kit - MTM Scientific (2 days ago) W7iuv radio antenna preamplifier kit. Plaque Winner. 144 MHz Hybrid LNA - W6IOJ. DX Engineering Getting Started Packages. I had my DX Engineering DV-40-P switched in the "Both" or 180 degree position and heard the weak signal DX with -130 dB noise. the radio antenna preamp kit (#preamp) from mtm scientific is for building a low noise radio antenna preamplifier for the 1 to 30 mhz frequency range. The preamp for this loop is designed by Larry W7IUV on his highly informative website, here: w7iuv. The New Mini-Kits High Performance VHF 2M RX/TX masthead Pre-amplifier has been desig. org netnews editor (based reflector news) rein, w6sz [email protected] ru was very active on 432 and 1296 during April. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. The PGA-103-2M-R2 is a high dynamic range low noise wide. OK1KIR: Tonda & Vlada vladimir. general purpose 1 to 1000 mhz wide band amplifier by dave miller. The Flag Antenna is in the family of terminated loops that can yield a cardioid (heart-shaped, single-direction null) pick-up pattern. 0 m dish K7ZTM Pete 2 x 45 loop yagi N8AJD Steve 45 loop yagi K8TL Tom 1. W7IUV amplifier: Gain was in the 19 to 21 dB range between 0. RX Loops deliver strongest signals in the direction of the plane of the loop, and sharp nulls broadside to that plane. The other receive antennas' outputs can be, at worst, about -30 to -35 dBi for a delta-EWE loop; see more detailed data in the new chapter in ON4UN's book. TIS on 1610: KOJ723. Stavo leggendo un articolo di NX4D riguardo questa interessate antenna che somiglia molto alla tradizionale flag. W7IUV has tried numerous transformer designs, but he says that the one described in the QST article is the only one that makes his Flag antenna "come to life" and perform as it should, and without hearing compuiter "birdies" (which are apparently picked up by the feedline when using his other experimental transformers). The Flag Antenna is in the family of terminated loops that can yield a cardioid (heart-shaped, single-direction null) pick-up pattern. This is very simply preamplifier module with 2N5109 transistor based on W7IUV design. You are bidding on a kit to build a low noise antenna preamplifer, as designed by W7IUV, for 1-30 MHz radio reception. MFJ-9232 HF QRP Mini Loop Antenna Tuner 25W Multi Band Transmitting System NEW. Building the project was simple after gathering some suitable parts. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. 2 m dish helix fed WA7PIB Carl Conifer dish KB7CNN Bill 2 x 45 loop yagi W7IUV Larry 3. De volumenaam van station Z is ? Het volumenummer is 011C-01FC Map van Z:\datasheet\Comm 23-10-2006 15:42. 25m band RX/TX masthead Pre-amplifier has be. Information on using the program and simulating the amplifier can be found at "Simulating Circuits and Systems with Serenade SV", by David Newkirk, W9VES, January 2001, QST, Page 37. The simplicity of the hardware and the circuit is fascinating. 73's nov95. poslední publikovaná verze. Top Score, S/O. The PA18 UHF/VHF Pre-Amplifier Kit is an ultra-low-noise, mast-mounted preamplifier system that provides a gain of 15 dB and a 2. Published with permission; more on W7IUV's home page email [email protected] DX Engineering Next Generation Crimp/Solder PL-259 Connectors. (W7IUV version); raised, 4 loop K9AY, 6x19x6 m Ewe 135º, 14 m low noise LF/MF Vertical. It is just 1. " Andrews told ARRL that it took about 500. HF High-IP3 Push-Pull LNA - WN5Y. This UHF wideband amplifier (Ultra High Frequency amplifier) has a total gain of 10 to 15 dB in the [] Car Antenna Amplifier Circuit. 23-10-2006 15:34. ; raised, 4 loop K9AY, 30 m 180º/0º mini-Bev. Special thanks to W7IUV for making these plans available to the Amateur Radio Community. - PA: 1st TH293 Plisch - 2nd TH313 Cavity PA Thomson LNA: NE334 - 0,2dB N/F WD2ODO + cavity filter + MAV11 MMIC - 32dB gain Feed horn: Loop feed - Antenna: Home made dish 10m diameter, design by OK1DFC. , 200 m 270º/90º Bev. High-IP3 Push-Pull LNA with 2N5109. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. The RF Broadband Preamplifier was designed mainly for Crystal Radio sets. He also plans to be QRV on 23 cm very soon. 73's nov95. K7FL / 5H2DA. antennas can be made for 160m by pre-amplifying each loop's output before the lossy 180 degree mixing. I attached a copy to this email for you to see, and another called 'CALL3NEW. 2 m dish helix fed K8YAH Ron 2 x 45 loop yagi WJ9F Russ 2 x 45 loop yagi. The performance increase was nothing short of amazing. I just finished building 6 Improved WellGood Loop amplifiers using SMD 2SC5551 transistors, 4 LZ1AQ Loop amplifiers and 2 Modified M0AYF loop amps with SMD 2SC5551 transistors. I built a. Building a LOW-Band Receiving 4-Square Antenna Hi-Z Antennas ™ The Hi-Z Antennas 4-square receiving system utilizing shortened vertical elements has been designed to provide a relatively small footprint high-performance receiving antenna for the Amateur low bands covering 160 through 40 meters. So I decided to switch my receiving antennas remotely and, to add more flexibility, and integrated a W7IUV amplifier to be able to use low-power output antennas such as a K9AY or a shielded loop. (W7IUV version); raised, 4 loop K9AY, 6x19x6 m Ewe 135º, 14 m low noise LF/MF Vertical. All of these amplifiers are acceptable for HF receiving in most applications so far as noise figure is concerned. RM Italy Solid State Amplifier. Occasional transmitter fault- offs and they were on with a guitar interval signal with male / female announcements before scheduled sign on at 0300 (Al Muick, Whitehall PA USA, Microtelecom Perseus / Wellbrook ALA1530P active loop dxldyg via WORLD OF RADIO 1664, DX LISTENING DIGEST) Hello, Voice of Broad Masses, Asmara on 7175 and 9705 heard at. 79 e,berhardt,2 x 22c,100 watts,, 3v8bb,36. I have an AMECO PT-3 Pre-Amplifier that had the separate antenna and separate receiver options installed. I noticed that the fading of the signal from CY9C coming at the different time from both antennas. We have tried the K6SE delta-EWE, a pennant receive-only antenna that has reasonable dimensions: total wire length is 72 feet, 28 feet on the base side and the high apex is about 17 feet. Bynoe has served as a partner and Chief Operating Officer of Loop Capital LLC, a full-service investment banking firm based in Chicago, where he had been Managing Director since February 2008. the loop using 'homebrew' construction, we also offer the AYL-M kit that includes a mast, wire and all the hardware needed to construct the antenna. Talks, announcements, references to Rivadavia, 34332 (Carlos Gonçalves, coastal site in Portugal, JRC NRD-545DSP & DRAKE R-E; Advanced Receiver amp. 3) 10T or so 10ft diameter VE7SL rotatable loop with modded W7IUV head amp (added power up the coax and choked to drive 400ft RG6 quad) - Last night it was used beaming to VK on 235degT which is kind of the worse direction dog fence noise wise but. W7IUV Beverage Pre-Amp (2N5109) | Contesting & SDR In preparation of the upcoming CQWW 160m Contests my friend Hannes, DK1NO was so kind to give me one of his W7IUV broadband, high IP3 preamplifier. Here is my old receiving performance of my Diamond loop with W7IUV pre-amplifier. His basic concept has been refined and has evolved over the 2007-2011 period. 144 MHz Hybrid LNA - W6IOJ. The 85 foot receive loop works very well from the bottom of the broadcast band through 40 meters. Loop Antenna Push-Pull FET LNA. 1 1039 @ w7iuv vk4yb 73 1302 -18 0. Amateur Radio's two newest bands came to life on Friday the 13th. Occasional transmitter fault- offs and they were on with a guitar interval signal with male / female announcements before scheduled sign on at 0300 (Al Muick, Whitehall PA USA, Microtelecom Perseus / Wellbrook ALA1530P active loop dxldyg via WORLD OF RADIO 1664, DX LISTENING DIGEST) Hello, Voice of Broad Masses, Asmara on 7175 and 9705 heard at. The current kit is the Softrock Lite II combined receiver. killer vertical -. Connect either the W7IUV amp output or the 2:1 transformer output (instead of sending it to the W7IUV amp) to a short coaxial cable to a plug inserted in the 1/8-inch connector jack of Radio Shack loop model 15-1853 or equivalent. I turned the receiving side to an external K9FD RX-loop with W7IUV pre-amplifier and found that it does not help so much. 73's jul95.
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