Recent content by 9C1Driver

https://klondikemikescapkits.com/ He is also a forum member.

That's a very nice older amplifier. Class AB with some filtering, should do great on SSB. As stated don't overdrive it. If your radio has variable power start with say a 1 watt AM dead key with the amp on Max. See what the dead key is, your shooting for for a dead key out from the amp of 70-80...

Chevy went to Blue engine paint in 1977.

The 454,455, and 3749 were all very very similar. The amp builders of that day would purchase these finals in large lots, they would build the same amp with any of the above finals. There would be no real functional difference. (note they would use the same for both finals, no running one 454...

Great little amp for SSB use. Bought one new in 1997 from Thomas Distributing for $89 lol. I'd buy 50 at that price today. Mine had the SRF3749 finals. Just don't overdrive it and if your a long talker add a fan on the top. Nice clean looking amp.

I’m sure it would be SSB capable, if the delay is not switched then it would have an auto ssb delay. That pic is a nice clean amplifier.

What antenna is it? I think an older IMAX 2000 can cover 2-3 MHz with an SWR of 2 or less.

Wow that looks like a pretty cool option. Going to suggest that to a local. HRO has them on sale right now, just add the mars mod and should be good.

I would plug in an external speaker to test the radio speaker. After that double check the radio settings, maybe the squelch is wide open or something simple.

Nice amp. Assuming you have a true peak reading watt meter on SSB I would run 8-12 watts PEP into it. It will loaf along at that drive level and run perfectly.

Just to be clear your wanting the red digital clock and not the older green rotary correct?

Actually these "new fangled things" are all mosfet finals. Mosfets do not like high SWR and will blow easily, I would set that SWR protection at 1.8-2.0. As far as your amplifier, they make two versions. https://truckscbsales.com/cb-radio-products/kl503-mobile-amplifier...

The KL300p is a class C amplifier. It will do fine on AM but on SSB it might sound a little crunchy or harsh. The older red KL300p amplifiers had two sd1446 finals, not sure what the newer black versions run these days.

The best option would be to have amplifiers built with the older finals because they were actually designed for transmitting. Examples would be the Toshiba 2sc2290 and 2sc2879. I think this also applies to others like the sd1446, mrf454, and mrf455. These have been discontinued now, HG is...