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I was getting a little tingle. I was reading the file you uploaded and, “Hmmm… that board looks familiar!” I have the board but had forgotten what it was for. I’ll unearth it and find the

I just tried on an old T-4X here..? there doesn't appear to be any stops.? Just turn it back the other way. 73, Gary WB6OGD

My records say I sent you a pcb. Just after I made the Sherwood boards, another guy was selling completed ones on ebay but I don't see he's still there. 73, Gary WB6OGD

Ok. It makes sense now. Given that nothing appears to be broken, any suggestions on how I can get enough preload on the bearings so that they will turn the armature? -- Bill N0CU

Can these still be found? Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent from Proton Mail for iOS

Steve, Put in the Sherwood product detector mod and I bet it will improve a lot. It did to my R-4B which is just like your 11 tuber. The 13 tube R-4A though still has slower nicer AVC and sounds

That's a nice-looking set! I have an 11-tube set that's in that sort of shape, too. it does sound great -- even with the SS prod det. Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a

The behaviour you describe is normal for that component. The reduction drive will continue to attempt to drive the wiper, even after it has hit its hard stop. I hope you can get it back together

The procedures in the manuals call for each to be aligned without being connected to the other. That is the basic alignment and, with the correct INJ cable, should work equally from the TX or RX as

Wow, What a nice set! The R4A was my very first radio and it worked like a charm. These look pristine! ??William N1WL ????????? CallSend SMSAdd to SkypeYou'll need Skype CreditFree via

For Sale Almost museum quality Drake 4A line, perfect for your collection or working station. I bought it from the original owner way back in 1980! Very few spots on the shiny copper chassis, very few

And if you have ever really adjusted the null, you would know that is a VERY fine adjustment, even with the reduction drive! 73, Gary WB6OGD

The carrier null is so sharp it has to be a multi turn pot. Rob, NC0B

When I initially checked the carrier balance awhile back it looked like this pot (R21) was set correctly. Today, I attempted to do the filter match alignment (Sec 5.9 in the instruction manual). The

Yes. It was installed in a L7 amplifier to prevent it from being driven on 10-11 meters. Not very useful I would say.... Most get tossed in the trash.. Which they should be. 73, Jim W7RY -- Thanks and

Gregg, If you are going to use with the T4XC, align it with it connected to the transmitter. The injection and antenna cables need to be drake spec cables. That does make a big difference overall. My

Thanks - I do also have a Shure 450 so I may use it instead and save the D-104 for another project. 73's Don W. KD4APP ________________________________ Sent: Tuesday, March 28, 2023 10:58 AM To:

I bought a L7 back then new and then converted it to be an export model.? You had to change one input silver mica, re-tune it, remove a set screw so the band switch would move to the 10 meter

Hi Steve, I have a pretty old, but original inj cable. Do the characteristics change over time? I have been aligning without the connections. thanks, gregg

I was wondering the same thing, Peter. The parts may be of some use in other applications. Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent with [Proton