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Hawkeye, be sure to check my post in that thread you linked to. the added bonus of the channel selector not silencing the receive while turning the knob is very useful, and i have a feeling you'll start doing this mod to all the 8719 radios you work on. LC

i think it makes sense that so far the 65-75 age range is "winning". this age group would have been between 18 and 28 in 1977 when CB got super popular. LC

I believe siliconix is the same company as Vishay. One of the big issues i have with these chassis is that they are using the small ceramic insulators on the driver, final, and the mosfets in the amp. notice in Nomad's pic that they don't even cover the whole back of the transistor. I replace...

i've been using one of these at work for almost a year now and it seems to be holding up ok. definitely not for all day every day soldering, but for the price it does its job quite well. https://www.amazon.com/YIHUA-3A-Three-Soldering-Station-Function/dp/B08BK3V8X7/?tag=worradfor-20

copper donut?

good deal. please post the part numbers you used if they end up working. you should also check out D21 and D22. these were also common mods and you might find them jumped out or with a resistor between them. LC

TM86, that mod where they remove L10 and L11 is an old audio mod from the secret CB days and it bypasses the low pass filter in the radio. it made the radios swing to higher wattages but eliminated the cool compressor that was built into this chassis. unless you have a parts board, you're...

I can't help but research CB radio when im bored and recently i ran across these two articles. I haven't read all of them yet but so far they are interesting. here ya go: https://www.jstor.org/stable/41237565?mag=how-black-cb-radio-users-created-an-audible-community&seq=1...

Ack, What are you looking to do to this radio? LC

Chris can you take a pic of the board and give us the board number? not that the pic will show the way to do the mod, but it might be similar to other radios and we might be able to work it out that way. LC

I saw Pez mention this but i'll go just a bit further. it is SUPER important that the tone coming out of your 8656 sig gen and the frequency that the notch filter in the sinadder is tuned to be matched. otherwise the sinadder cannot really do it's job and your results will suffer. so, you...

thanks Eldorado i will reach out! LC

Ok thank you i think i see what you mean now. I would probably word it a bit differently, but the effect on performance is the same. This is how i would explain it to that customer. Your 2547 was showing 19 watts PEP on the wattmeter, but wattmeters are dumb and dont care what frequency those...

boy Hawkeye you've got me here. I can't figure out what you're trying to say. especially the part about the AC outlet. is there any way you can word that differently to help me understand? you do understand that amps are pulled by the load and not pushed by the supply right? and the "what...

Compare the two schematics and you'll find your answer. don't go too low with the new value though, it can be hard on the power supply when the clarifier is cranked all the way one way. the biggest limitation to swing range you'll find is the crystal itself. the load capacitance has a lot to...

LC

here ya go: https://stores.goldeneagleradios.com/galaxy-potentiometer-20kb-1kb-clarifier-dx77/ or if that doesn't fit, then maybe this one: https://stores.goldeneagleradios.com/galaxy-potentiometer-20kb-1kb-clarifier-dx94-98/ or maybe even this one...

well shoot! I was kind of getting excited about this one as it looks like it might be sold here in the US as a 10 meter rig, meaning that it's probably convertable. however, it looks from the specs that its not a single DIN size chassis. that takes it out of the running for me. LC

Hi all, I am on the hunt for what seems to be a rare item. The chrome bezel for an S9 radio. the one with the large round meter. I believe that the S6 bezel would work as well. if anyone has one, or knows who might, please let me know. Also please message me with your price if you don't...

cool! i used to have the VSB-1 by selman enterprises (the secret CB people) but i never hooked it up to a radio. how about some pics of the insides of this beast! Who knows maybe i will be one of those weak contacts you can now make! LC (410)