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OK, let's try this, the AUX-7 works fine, I don't need it, would anyone like to buy it? Thanks, Adam W4AJF

" I never found tube life a problem with the elevated filament voltage. " I have a vintage text around here somewhere focused specifically on tube (receiving) longevity studies and among the variables

My first TR7 had the AUX, sold it when I downsized/renovated our house some years back. my second one does not have AUX. Not to berate those who want... but I just did the PC trace cut and enabled all

yes, the ones I have are by Farr radio. Look them up. If still in business you can get the info there. Let me know otherwise. David Assaf III W5XU, VP8RXU

Actually, now that I remember, Far circuits is who I bought the board from. Bob, you are not that far from me, I'm in Kingston, about 30 miles west of Knoxville.

I have several in use and they work great. I will try to find the info on it and will email you. The factory Aux 7 board uses plug in modules that have diodes inside. The arrangement of the diodes

There was an article in the July 1982 edition of QST that has all the info on it. I can't post it on here for copyright reasons but if you are a member of the ARRL you can search for the back issue

Adam, FAR Circuits made (or maybe still makes) that diode matrix board for the three lowest ranges (~0 to 1.500-MHz) plus the three WARC bands. I made my own version per a QST article in the 1982 July

Yes, I understand that, I was trying to see if anyone knew the maker and had a paperwork on it. Thanks, Adam

It’s a homebrew Aux7 fill in board to open up 12,17, and 30 if I remember. I built one and used it until I got my real Aux7 bird.

Hi Jim, I don't know what that means?? Adam

Nice Job Adam. 73, Jim VE1RB

I would be game to have a 20 meter net meet...Especially since 20 has been on fire.

I’ll give it a try….! Hank WM1V ex-WN2HOS wrote:

Looking forward to the net! Wayne Smith K5FEX

I'm in. [email protected]> wrote:

I'm in Steve, as often as I can mid April thru late Nov. but for occasional travel to ON and AB, or whatever...like most retirees. Working on a winter remote....but not with Drake radios. As such, not

Hi Steve, I used the Sartori “sold tubes” in the 3rd mixer position for a while until he went out of production. Then I designed my MIX-4 replacement. There were two versions with different mixer

Hi Doug, I tried mu metal shielding but to no avail. Yes rotating the transformer is tedious, but it solves the problem. There is quite a variation from R-4C to R-4C and I have no idea why. That said