¿ªÔÆÌåÓý

Phew, my memory is not as bad as I thought. The external speaker box I made had a power connector ( Deans style T connector) for charging the battery pack via the front micrphone connector Fig 3 of

May be I will take the power from the microphone connector if present or mod' the mic connector. I think one had power for the external speaker box that I made. BTW the aluminum panel that had 7 glass

Peter, My dessicant had been removed long before I got mine. I snaked the wires through the dessicant hole and put a duct tape cover on it. Good work! Bill KE3BK [image: IMG_1862.jpeg]

Partially mod'd In order to get contrast I had to drop the LED brightness for the photo, and also my hand shake made it blurry. Don't really want to drill a hole to? pass the power leads through. P

good luck! I bet it will turn out great!

Found some 12 and 5V LED strips in my junk pile. Both use 150 ohm resistors. The 12V strip was confusing. Each LED was a module with three individual white leds. Three parallel strings of three each

Dave: My 931 has a mute line that is used when an external speaker is used. When I first tried an external speaker /amp I got RFI. Once that was sorted out, when transmitting , garbage comes out of

smart mod. tritium half life ~12 yr I plan to do the same mod! p

Tritium fades in about 10 years if I am not mistaken I installed leds on mine https://youtu.be/1_2Vt_BhTYg?si=PY5vkscabDIHQaQR

Hi: if I let my eyes adjust to a pitch black room, I can see the "beta" lights glow just enough to read the frequency dials. However in a recent post, another unit's back light appears very bright in

Ststic crashes that aren't changed by the volume control? First clean the volume control, then look for bad coupling capacitors in the audio amp circuits after the volume pot. --scott

Hi Dave, The common problem on those radios is the antenna relay. I had to change the relay many times to find a good one. Dirty or not closing well contacts, probably. Try a new relay. 73 de Alex,

Update here on the Hamvention TRA-931X. I am a happy camper at the moment. This rig does well on TX. I have used it on 75m phone with a external antenna with good results. I have made several CW

One set is 260€ + shipping , both are 500€ + shipping [email protected]> wrote:

Hi there what price are the PRM4720A,s thanks Doug [email protected]> wrote:

If someone is interesting I'm selling 2x RACAL PRM4720A in working condition 1 set includes; Radio PRM4720A Original antenna Hand combination Original racal bag 1x 8x1.5V battery case

This delays the RF relay which mutes the RF and Audio circuits. Gary

Gary - *This affects? the? Audio ?* This adds? TX mute to the? 6790 ?? same as the? 1972 ? or simply mutes audio - ie- is agc? addressed to prevent it desensing due to local? tx? ? Tnx-

The hang delay circuit works with the A1A1 to delay the RF and audio circuits after you release the TX key and delay the receiver by 1 to 15 seconds because the older transmitters have a delay in them

This?