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Those are pass transistors used for regulation in the power supply that runs the amp. The other two MRF transistors are doing the RF amplifier work. 73 Jeff

Does anyone have one of these new Cobra's that have done the variable carrier mod? 73 Jeff

Ah Yes now I get it. I have no idea what the new AM FM Cobra radios are using for the board. Give it a minute and see if anyone here has played with the new model. Posting pictures of the board in your radio may help. And welcome to the group. 73 Jeff

I apologize, I can't make out the picture it's blurry. NPC mod maybe? Can you link to where you found the image? 73 Jeff

I don't know if you remember The user ' Hook ' but for years he talked on a a99 on a ten foot mast leaning against his garage. I worked him on SSB many times from CA to TX 73 Jeff

Technically, yes you 'can' use 75 ohm TV coax.... There was a member here years ago that used commercial 75 ohm cable to feed a antenna several hundred feet up the side of a mountain because that's what he had and it was extremely low loss. But Your radio and antenna and everything else wants to...

(Translation of above: I have one that's in the vehicle, great with an FT817ND, and it puts out about 85 watts on HF.) _ I no longer have mine, I gave it to my younger brother with a bunch of other stuff, it was good for @ 100 watts and very clean on SSB. 73 Jeff

Another version of the radio https://www.radtels.com/products/pre-sale-radtel-rt-20sdr-15w-am-fm-ssb-sdr-radio-transceiver 73 Jeff

73 Jeff

I believe that started in '22 or '23 It was $35 when I renewed couple years ago It's not bad for 10 years however I would like to see the fees go back into something radio instead of the general fund.... Yeah like that would ever happen 73 Jeff

Looking forward to seeing your results. 73 Jeff

Congratulations

My Messenger II had the original slide switch mike directly wired to the chassis and the accessory plug on the back for the Tone Alert. It's been many years ago , there was a lumber mill that ran a 27 MHz repeater and used tones for opening the squelch. I might even have some old reeds around...

When that song was first released, several groups were writing bad reviews calling it sexist, not having a clue that the song was really about CB radio. 73 Jeff

That feature stops flood postings from spammers so they can't load up 20/30 posts at one time.... 73 Jeff

To be honest I didn't even know that there's a delay....... I did see your report and removed the user Thanks for the report. 73 Jeff

I remember Johnson made some early CB radios that used this for a selective call feature. It was a plug in accessory that muted the rx until it heard the correct tone to open the receiver. I think Lafayette had something like that as well. 73 Jeff

Thrifty drug store and GBS Hardware had the biggest selection of tubes, I think a 6js6c was $7 back then. ( Bill the guy who ran the TV repair shop always charged $.50-1.00 more) Yessir we scavenged old TVs/radios for tubes as well The good ole days 73 Jeff

I started with a 3 channel RS cb and worked up to the 101 had a B and a E series. I was fortunate that I had already progressed past the defeated limiter AM junkie mentality when I bought them. The B had Toshiba tubes with the green stripe and I limited it to 20 watt carrier on AM and they lived...