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Or, he can just sell the carcass to me! LOL :D ~Cheers~

Definitely sounds like +12V is getting to the bases of the transistors if they're blowing up right away... ouch! ~Cheers~

It will work, it's just that there isn't anything to gain from installing it. It'll perform exactly the same as the stock 2SB827 regulator. ~Cheers~

Actually, I have a couple to add to this... 5.12mhz and 15.36 mhz. ~Cheers~

If you decide to let it go as it sits, let me know. If you decide to repair it, we'll be here to help. :) ~Cheers~

Don't waste your time on it, especially on something like a 2547, that's only a single final radio... there's absolutely nothing to be gained from it. There won't be an output increase, and it won't run any cooler, as you're only modulating a single final at the final stage, instead of a pair of...

You forgot an option on your poll.... (X) - What is a Panda? I fixed it. That's what I have selected. :D ~Cheers~

Sure thing! Keep me posted. (y) ~Cheers~

Even though it's a major pain in the butt, I'd check the underside of the PCB and make sure all solder joints are solid, and check the fuse as well, re-seat it if you haven't done so already, even though you did say the fuse is confirmed good. It could also be that the power setting switch is...

The transistor that located next to the bottom relay in the first image you linked, and the electrolytic capacitor right next to the transistor. The capacitor is black. Those two components can contribute to the dropoff of output, as it sounds like the relay is losing voltage to stay keyed down...

Sounds like a capacitor failure on the relay switching circuit, or the keying transistor has a leaky junction causing it to fail due to RF saturation. ~Cheers~

I like the AR-144/AX-144/PC-244 and Cobra 146GTL radios, those are the size of a 25 and work very well. If you want an even simpler radio, the PC-122(XL), TRC-453/TRC-465 radios are also great talkers, and they are even smaller. If you get one, and ever want extra channels, I am re-producing...

For the D858 chassis, 22-27 ohms will be the sweet spot for the final in most cases. For the driver, 33-39 ohms tends to be ideal. 47 ohms on the final still tends to make the range a bit too large. It certainly helps decrease the range, but it's usually not enough, especially if the final is...

Well, to be fair, the original bias circuit didn't really have any range limit set resistors in place, that's why the adjustment range is so large. That's what the 22 and 39 ohm resistors do, is they set the range limit of the 300 ohm adjustment pots. It's not so much the fault of the 300 ohm...

Feel free to PM me if you need any help. I'd be glad to assist. It's never a bother! :D As far as the floating goes, I'm not sure if it's directly caused by any instability within the circuit itself, but I WLL say that the bias current range is WAY too large. On almost every D858 chassis I've...

My TRC-458 currently runs the C1306/C1969 pair. At the time, I didn't have any extra C1307's, (I now have 10+ good C1307 used pulls) so I installed a C1969. Works great, no issues. I installed a 22 ohm resistor at the final, and a 39 ohm resistor at the driver. Bias currents are set at 40mA for...

Dmans, If that radio has had the service bulletin done that involves installing a 47 ohm resistor between the base and emitter of the final, change it from a 47 ohm to a 22 ohm, 1/2 watt. It allows far easier adjustment of the bias current, and it helps with stability. If the radio does not...

Both are great radios, but between the two, the 139XLR gets the nod... it's hard to top the venerable D858 SSB chassis. I run a Realistic TRC-458 myself, which is the same basic chassis as the 139XLR, and it's been amazing. The Uniden Washington would be a slightly better performer on AM, but if...

No problem!! (y) ~Cheers~

No, it can't really be too small. You're good to go. Insulated or non-insulated, it doesn't really matter. (y) ~Cheers~