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Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
KI4IO- Nice sounding radio, as you mentioned wide passband.? I guess the selectivity is provided between the ears. Your point about everything coming in pairs is apt, twice as much building,
By Curt · #258 ·
Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
A search for "binaural" over in the QRP-Labs group finds that the QCX can be used as a binaural receiver. The QSX will likely come with binaural mode included, assuming it ever comes. I believe the
By Jerry Gaffke · #257 ·
Re: Norcal 40a (Was Re: [qrptech] Group Introduction: If you're going to post on the group, reply here!)
Got the NC40A out and running today.? First QSO 1W to ND9M in FL who was running 50mW.
By Curt · #256 ·
Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
Nevermind, I just saw the recording in the Files section. Thanks :) -- Ryan Flowers W7RLF https://miscdotgeek.com
By Ryan Flowers · #255 ·
Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
Fantastic! And yes I meant FT50-43's, not sure what I wrote before lol. I have a memory like a uh... uh what's it called. A thingy. Can you recommend any recordings to listen to? Ryan Flowers
By Ryan Flowers · #254 ·
New file uploaded to [email protected]
Hello, This email message is a notification to let you know that the following files have been uploaded to the Files area of the [email protected] group. * /Jerry - KI4IO/CWT - parked on one
By [email protected] Notification <qrptech+notification@...> · #253 ·
Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
a few points regarding my binaural receiver: 1)? I misspoke regarding my audio amps, I used 5532's and LM380's (I had said AD820AN's) 2)? I had so much LO power available (a happy accident) that
By Jerry Wolczanski · #252 ·
Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
Yes and no but mostly yes. the original Bitx used 1n4148 diodes and toroid transformers. The 2N2xx as has been discussed recently also used 1n4148 diodes and toroid transformers as do many other
By Graham <colonelkrypton@...> · #251 ·
Re: Norcal 40a (Was Re: [qrptech] Group Introduction: If you're going to post on the group, reply here!)
That is correct.? To be specific:? The schematics (Rev E and Rev F) are in Appendix D of the Manual revision B. Jerry AA6KI
By bleepingbeep · #250 ·
Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
I have also wondered if a double balanced diode ring mixer with the usual ft43-10's will work in place of the modules as they are usually listed. I can make a DBDRM for a few cents compared to
By Ryan Flowers · #249 ·
Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
Jerry, I will look at your circuit. One of things was wondering about was whether diode ring mixers would wprk in lieu of the minimodules. I suppose the only group project PCB possible would be from a
By Curt · #248 ·
Re: Group Introduction: If you're going to post on the group, reply here!
Thanks for the new group. Homebrew is by far the most interesting part of the hobby. Currently working on a transceiver. It started on 40m and currently works on 60m. I plan to make it properly
By Richard Tomlinson G4TGJ · #247 ·
Re: Stockton vs Resistive SWR Bridge
home brewed: http://www.learnmorsecode.com/SWRmeter/index.html
By Rob <roomberg@...> · #246 ·
Re: Norcal 40a (Was Re: [qrptech] Group Introduction: If you're going to post on the group, reply here!)
The schematic IS IN the manual.? I know there was some difference to the earlier manual/schematic, I had to update my PCB design during my build. 73, Gary WB6OGD
By wb6ogd · #245 ·
Re: Stockton vs Resistive SWR Bridge
Hey Gang...I've been selling Stockton Bridges since the cows came home. http://kitsandparts.com/bridge1.4.php Simple and inexpensive...you provide teh meters. 73, DIz, W8DIZ
By w8diz · #244 ·
Re: Stockton vs Resistive SWR Bridge
The Sandford Wattmeter is temporarily discontinued but I believe Kanga UK may have 1 or 2 left (none in the states).? It's a fantastic power meter but does not measure SWR.? The "Oner" Stockton
By John Clements · #243 ·
Re: Norcal 40a (Was Re: [qrptech] Group Introduction: If you're going to post on the group, reply here!)
Just to clarify (correct me, please, if I'm wrong):? The "RevE" designation refers only to the schematic, not to the manual. Agree--it's an excellent manual. Jerry AA6KI Tucson
By bleepingbeep · #242 ·
Re: Stockton vs Resistive SWR Bridge
I have and use both types.? The resistive bridge has the advantage that the transmitter never sees an SWR above 3:1, even across an open or a dead short, so it's easier on the transmitter.? I break
By Eric Forman · #241 ·
Re: Group Introduction: If you're going to post on the group, reply here!
Thank you for setting up the group.? I find that I learn more by listening than by talking, so I don't usually say too much.? I've learned a lot from this group and hope to see it continue. -Eric
By Eric Forman · #240 ·
Re: "A Binaural IQ Receiver" QST Mar 1999 Campbell KK7B
I've built this receiver but had a few changes to Rick's design.? His diplexers were extremely complex and I ended up using a simple diplexer from "Solid State Design for the Radio Amateur"
By Jerry Wolczanski · #239 ·