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None of my Sherwood product kits were for the Drake transmitters, they were for the R-4C. I am not aware of any TO-5 relays in a stock Drake product. Rob, NC0B

Steve, for the uneducated, please describe the baking process. I assume you are rewetting the solder connections on the sides of the crystal blanks. Dave

Dave, it's starting to look like you have two bad crystals. Have you tried baking them? I know this thread is long, so excuse if this has already been done. Steve Wedge, W1ES Time flies like an

Are these direct replacement in TX4B’s ? Bill AE8EA

Well, I tried that, no joy. So I tried a few other things. Using my SDR to receive the Xtal oscillator I find this: 28.0 (42.5 Xtal) oscillates at 42.603 but no proper receive, warbly sound 28.5 (43.0

Finally got this working well.? First, I installed a 7 pin DIN connector in place of the 4 pin Accessory connector on the rear of the R4C.? I connected the INJ jack to this connector using a piece

I have one available - its on QTH.

I wonder if Mark NO5J might have another one? Ron W5SUM

I got up with Mark, NO8J, this morning and he is going to send me one.? Harbach and Nationwide Radio neither on have it. Thank you for the suggestions.? I appreciate it. 73, Ron ND4R

The following items have been added to the Files area of the [email protected] group. * /TR4310/Drake TR4310 VRTO VCO FET Substitute Tests G4FPH.xlsx (

The following items have been added to the Files area of the [email protected] group. * /TR4310/TR4310-Frequ_scheme_DL7MAJ_G4FPH.xls (

Happy 2025 to all in the group! With all the holiday season festivities behind us, I've found some time to continue work on the TR4310. References to the synthesiser in this post will be of relevance

I have Mill Spec HI G TO-5 relays the same ones Rob Sherwood used in the 80s & 90s on his filter boards very low loss spec for 1 million cycles they are NOS $20 for 2 shipped. my email good on QRZ.

Steve (G8GSQ); I bought my first brand new C-line in 1974. A year or two later I had exactly the problem you describe with the "auto-tx" on power up. Change the VOX tube....6EV7. Try several if

Most of the time, it’s a matter of adjusting the VOX and antiVOX gains, which can be a bit touchy. Note also that the VOX settings for CW and phone are separate. Steve Wedge, W1ES Time flies like

Try it with the mic disconnected to make sure it's not the mic that has a problem.? You can switch it to x-cw without the mic to see if the relay sticks.? The relay can get sticky.? You can remove

I'm looking at a T4XC for a friend. It needed new output tubes when he got it, they showed overheating marks on the plates and the cathode resistors were burnt out. With replacements fitted and the

Might try Harbach Electronics or Nationwide Radio.

Does anyone know of a drop in replacement for the relay in a L4B? Or do you know the specs? Drake manuals give little to no information. Ronnie W5SUM

The Tr7 is really pretty simple to troubleshoot and repair. There's a lot of people out there more than capable. it's not just two or three in the whole world.