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By the way, you should see SAOME plate current on all bands, even if there is no output, as you should see the idle plate current and that should change with the bias pot adjustment. The fact that you

I’m sorry you think this is painful. I’ve read this group for several years and decided to jump in with a “project”. No, I have not diddled any trimmers, yet. All bands other than 40 work

Then start looking at the grid of the finals, then the grid of the driver and work your way back until you get a signal. Look at the wiper of the crystal selector section of the band switch to see if

If the switch,crystal and the other bands are ok, the only thing left is 2 fixed caps and 2 trimmer caps,? or a bad connection. Have you tried adjusting the trimmers? It is painful watching threads

Yes. Sent from [Proton Mail](https://proton.me/mail/home) for iOS

Do you have an oscilloscope? Gary W0DVN

Yessir. Always look at the positive! Sent from [Proton Mail](https://proton.me/mail/home) for iOS

Just keep in mind that you now have more ideas on what it NOT causing the problem. 73, Steve Wedge, W1ES Time flies like an arrow. Fruit flies like a banana. Sent from [Proton

Anyone know what the inductance values are supposed to be for the two coils in these instruments? It's a bit odd to me the manuals I've seen don't include that so was curious. I suppose I could

Well, here’s the latest update. ?I swapped the 18.1 MHz crystal in from the receiver. ?Still no drive on 40M. ?So, crystal is good. ?Went through all of the wafers on the band switch. ?Need to

The DRAKE group came through again! Thanks to the kind help of Terry N7BDL, we will be good on the shield. Now to see if there are any more bugs to swat :) 73, -Glenn/WB0DKT >

Hi Terry, Excellent. TY. I will reach out to you directly. Please follow-up here if you do not get an email from me shortly. 73, -Glenn

Thanks, Steve. I have a very difficult time relegating equipment for spares. This one is in such good cosmetic condition and I wanted to rescue it if at all possible. 73, Barry - N4BUQ

David I am no expert, but be aware that you will be using twice the heater current. Your transformer would ot mind - but it depends what else is in the circuit. I suspect probably nothing since

John, While I wanted to rivet those fingers back in place, I was afraid of shattering the steatite so I went with screws. As for getting the solder connections rotated, I gently tried to rotate one or

That will work.

I have one if you still need it. 73 Terry N7BDL

It's going to take some time to find it. I would first attach an ohmmeter lead to the common of each wafer and check for contact at the 40m position. Probe at the solder points and not the delicate

Steve, I ordered the documentation. ?I’ve been meaning to do that since the info I got from K4OAH on the Tr-4 has been invaluable. ?I’m sure I’ll get it figured out between the service info

Well-done, Barry! Your patience is impressive -- I would have put it aside for parts. Steve Wedge, W1ES Time flies like an arrow.? Fruit flies like a banana. Sent with Proton Mail secure email.