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Got it. Thank You C

Thanks, Walt. Mine is a “673” transformer so I’m guessing it pre-dates the factory change to the upgraded transformer. Capacitor and crystal date codes are from 12/1962 to mid-1963. ?This HT-37

If you don't work CW, it won't make any difference. If you do, it would give you more power output in CW. Walt Cates, WD0GOF https://wd0gof.com/Hallicrafters A majority of acceptance is not proof of

Tom Thanks for the suggestions...I will be taking apart the case sometime in the next few days and keep you posted I had the foresight to remove the batteries in both units when I put them away, so no

Thanks Walt. I was on the right path. My radio seems to work fine without the offset. I was curious as to why it was even there. C

Another frequent problem (at least out here in DRY Colorado, is "zorching" of the front-end FET.? Static WILL take it right out, as there's no protection in front of it.? The NTE sub works quite

Check the part # on your power transformer. If it is 052-400877, it is a late production xfmr that was improved to eliminate the filament winding failures. For more information on the xfmrs see:

In the CW mode the balanced mixer is biased to pass the carrier oscillator signal (USB) without carrier suppression. The USB osc frequency is just outside the pass band of the xtal filter. Although

I recently acquired a very nice HT-37 transmitter. From my limited testing, it appears the power transformer is functioning fine – for now. That said, I’m considering a purchase or rebuild now for

What is the purpose of the 50HZ CW offset?? This is accomplished by C135 a 33PF cap.? Why would you want to kick CW carrier over just 50 hz? I can run the rig on CW with out the offset and it seems

Jim, Again, thanks.....will keep you posted. Tom

TomYou are most welcome.??Anything I can do to help, just let me know.? If you find no issues with corrosion of the printed circuit traces, then the problem can be as simple as crud in the switches

Jim Thanks so much for the advice.....I had the foresight to remove the batteries so there's no corrosion there..... I will eyeball the PCB for anything amiss.......I have seen some leaking capacitors

TomThe?Panasonic RF-2200 is a mid 1970's era transistorized receiver that is not synthesized, that is it is a traditionally L/C oscillator tuned receiver.? Doing a search on the 'net, it seems to

Thank you Richard. I'm saving all of this in my radio folder. [email protected]> wrote:

I forgot a couple of things despite the length of my reply (sorry about that). I do not know of a good tech for the Panasonic receivers you mentioned, doesn't mean there isn't one. Someone else may

Now beware these are my opinions, I think they are right but others may disagree. A Variac is useful especially if it has meters showing the current being drawn. A volt meter is also useful but less

(I know this is a little off topic but I hope someone out there can answer) I have had two Panasonic RF-2200 radios for a lot of years and want to get them back on-line again,? so I have a couple of

Thanks, JIm!? I will clean K2 just for the heck of it.? The radio seems stable now.? The Mica caps have a silver migration problem. They were all perfectly fine 10 to 15 years ago. But now, they

Good morning Clark Et al, That Mica is a new one for me.? This is the first I've heard of one failing that way.? Will enter it in my log of can bees.? Thanks all for the interesting conversation.