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Many thanks for the info Jim. I have a spare Regulator Board, which currently does not work in my R7.... And a newer version power supply board. My R7 has the older one. Will the new one work in an

The list I shared was with the dummy load connected. I got the rig a few years ago and, aside from fixing a bad Zener diode in the PTO, I didn't do very much with it so I don't know how well it used

Which relay did you clean? Barry - N4BUQ

The one I’m working on goes intermittent all bands but 15 and 10 are both weak, transmit and receive. Cleaned the relay but long term that hasn’t helped. Replaced 4 dodgy tubes. Steve Wedge,

"Daniel W3DF via groups.io" <danflan49@...> wrote: The 220uF on the PS board will run warm because it is essentially filtering square wave ripple from the mutltivibrator oscillator.

I assume your table of AGC voltages is with no antenna connected? The calibrator should come in at ~S8 or so on 10 meters so you are pretty far down. It seems your receiver has more baseline noise

Craig, I usually do listen to my transmitted signal as my sidetone.? My homebrew T/R switchbox switches the antenna from RX to TX and grounds the receiver antenna input.? Works well, especially with

My solution is to run my R7/A from an external power supply. My regulator board is in good shape but I have a 20 Amp variable Astron right there, so why not? The two-pin Foster connector can be found

FWIW I have not had a real need for any of the N7NB mods. The PBT is much more effective than an audio filter. What will help is a good outboard DSP. My favorite is the ClearSpeech base but I also

Steve: I assume you meant AGC. ? I have a TR-4 that has the same issue. ? Fine on TX but low on RX. ? See attached file. -- 73, Bernie. VE3FWF *Real* radios glow in the dark

Craig: Many thanks for your interest in the four modifications I developed for the TR7 back in 1991/1992 (I can’t believe it was that long ago). In terms of building/installing these modifications

perhaps take the easy way out and monitor your own signal for sidetone? The secondary benefit is that you know you're on frequency as well. -- Craig/W8CS Greenville, SC

I'd like to pair a 2-NT transmitter with a 2-B receiver.? The 2-NT manual says to connect the sidetone output to the grid of the receiver's audio amp or to the arm of the receiver's volume control

The R7 and TR7 use Molex tin plated pins in the plug in printed circuit boards.? Tin to tin contacts oxidize and become high resistance.? For those to have corrected problems in the 7-line equipment

Interesting. Quite a lofty project considering the features are standard in today's most basic econobox.? Everything checks out on paper, but the QSK RF management might be problematic, and BOM needs

And just like that, AC got me again… Steve Wedge, W1ES Time flies like an arrow. Fruit flies like a banana. Sent from [Proton Mail](https://proton.me/mail/home) for iOS

Jim, Could you send me the service manual parts list for the old version of the power supply board? OR the service manual that covers the older R7. I have not been able to find one. Thanks, Dan

I read past where the transmitter alignment starts (was still waiting to do all of those sections) when I realized that adjustments to T7 through T10 are covered in that section and I haven't done

Thanks for the info Jim. Dan (W3DF) [email protected]> wrote:

Ironic. Barry - N4BUQ