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FWIW, the effect is called "play through". It is common in some old receivers using self biased detectors. This is not the cause in the TR-7. -- Richard Knoppow 1oldlens1@... WB6KBL

I think you are interpreting it correctly.? This is what I think it means: 919664054 means 9/19/1966 at serial number 4054 1026665400 means 10/26/1966 at serial number 5400 So Drake discovered the

Steve, Sorry, I was looking at my R-4B schematic. Disclaimer.. I am somewhat "Drake rotary switch" challenged... The way I think it works is... Power for the BFO or the AM detector comes from R130.

Hello, All of the sudden I have lost 10R . I have traced it to the mode switch. However my copy of the mode switch wiring on my schematic is not very clear. I even took the wafer off the switch bank.

Gary, this is an 11-tube (I'm guessing that C188 is in the 13-tuber). with a solid state BFO. What I'm seeing in the schematic isn't exactly what is on the radio but the photo in Garey's service

Steve, Could it just be a bad switch contact? Measure for voltage at T11 at C188. 73, Gary WB6OGD

Welcome to the group, Rich! When I'm just listening on 40 or any band, I usually have it parked 50 kHz above the bottom, in case I can use my straight key. I've been preoccupied with my bench lately

Now THAT is a boat anchor! Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent with [Proton Mail](https://proton.me/) secure email.

Welcome to my bench. Today, we will look at demonic possession of a BFO. Recap: BFO doesn't work with switch in any of the BFO positions. Notice short note when switching from BFO modes to AM, right

i’ll have to get workin’ on that extra class upgrade... joseph n. graif personal account Sent: Friday, June 24, 2022 1:59 PM To: [email protected] Subject: Re: [DRAKE-RADIO] Good Day All

Hi Rich, When I'm in the shack I usually have something parked on 7023 kHz.? Pretty easy flip of the antenna switch to go between the R-4C/T-4XC and TR-4Cw/RIT so you could get two for one!? Make

That is very common in the TR7. The reason is that the pot does not go to zero ohms until the off position is reached. Later versions seemed to overcome this, likely by a change in the pot. Gary W0DVN

Nice one Steve! Looking good! 73, Jim W7RY

now, there’s something on which you can do some major communicatin’, eh? i love the way the wattmeter and scope are dwarfed... joseph n. graif personal account Sent: Friday, June 24, 2022 12:52 PM

yes...but i don’t know if it’s normal. actually, with a hard to read signal (perhaps it’s psychological), i can copy better with the volume all the way down. go figure... joseph n. graif

Like this one, John? 73 de Steve, NR4M

When turning volume of my TR7 down full ccw I still have audio , in other words, the volume goes down but not to silent, has anyone else experienced this? is it norm? Mark 73

Here's how to do just that: http://www.wb4hfn.com/DRAKE/DrakeArticles/Receiver_Pwr.htm 73, Gary WB6OGD

These are just canoe anchors. A DX100 or a T368 is indeed a boat anchor! :-) Enjoy your Drake! 73 John K5MO jgraif1@...> wrote: