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Ok great to hear the confirmation. I’ll clean the connectors first and then go that route. Thanks [email protected]> wrote:

Thanks so much Peter, really appreciate the thoughtful/thorough response here. Will absolutely follow your advice. Sean KK6BEB

Thanks Peter and Jim. Jim, as soon as? I saw the schematic you put up I guessed the problem, and one shorting RCA plug later, I now have a working tuning lamp. Peter , thanks for your suggestion, but

I'm impressed! ?Great job.

-- Thanks and 73, Jim W7RY

Isn't the lamp on the R4C VFO controlled by the transmitter? Its called the PTO lamp on the rear apron of the receiver? Jim W7RY -- Thanks and 73, Jim W7RY

I have replaced one of the power resistors, too. Definitely needs to be checked out and replaced, as needed. IIRC, I replaced the one I had with a higher wattage part or combination (it was at least 5

Hi Lawrence, My bulb holder had problems also. From memory, the tag that the wire is soldered to comes loose from the pin in the center of the holder (that contacts the bulb). You can solder the end

I’ll find out soon enough, I reckon. Getting ready to clear my bench for the TR7A to see if I can find out why the meter pegs when letting up the CW key. I’ll poke around the 120V area (which I

Seems to be a few of them being made. Here is my version. I found the 2 line display more than adequate to display the relevant information, and it fits into a slim case a lot better. Excellent job

I recently acquired a nice late serial R4C in good condition but with no panel or meter lights.? So. I dug out my supply of #47s and went about replacing the bulbs. The meter bulb now works a treat

Yes it’s a good solution. I had made the assembly with a 2-line display whose dimensions are the same as the display on the SP-R4. I considered replacing the current switching with this display and

Sean: Suggest checking two things first.... 1) There are some power resistors in the RV-4C that get quite hot and can change value. Check all of those to make sure they are OK and within spec. I have

Hey gang, I recently acquired a TR-4Cw and RV-4C. Both work great however I noticed a big reduction in audio when I switch to using the RV-4C’s VFO. I’m guessing I have a bad/degraded tube in the

Using Firefox on the group site I get audio and video.? COOL Doug!? Nice work. 73, Gary WB6OGD

There was recently a rather long discussion of RIFA caps in the HPAK group. It starts here: /g/HP-Agilent-Keysight-equipment/message/129350 I haven't heard any stories about RIFA caps

Thanks for the responses. There is definitely video on the clip. It is an MP4. The firefox browser plays it but I strictly use Linux here so not sure about windows. Try saving it and bringing it up

I viewed the video but no audio was present. Evan, K9SQG

I had audio too. Great work! 73, Bill - NA5DX

Hmm. There was audio when I viewed it. BTW, nice job, Doug. Thanks, Barry - N4BUQ