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If someone can't comprehend voltage rating of capacitors, meaning they can't do a simple search to learn, they should not be replacing capacitors or any parts. It is not difficult in 2021, to find an electronics forum or such and ask about capacitor voltage ratings and if going higher is okay (a...

Yeah I do believe they are much like the Cobra 25 LTD and that schematic should do the job, though been a long time since messing with any. The PC66 I also believe may be the correct schematic. At $4 you really can’t go wrong, working or not. If not stated it’s a 50/50 chance of it working. I’d...

We used FM, allowed or not, when any of the locals got the urge. I'll also say that most of the locals, well basically all of them, had FM on one radio or another, and it never sounded very good for local chit chat despite being FM, also did not work well since guys were spread all over and...

I also find it hard to believe a 0.001uf capacitor would have any effect on audio across speaker wire. That cap is used for keeping RF off, or at least minimizing RF on the speaker / wires / audio circuit, not shunting audio treble frequencies. I would transplant the capacitor to the new speaker...

I’ve heard the name, but have never bought anything, not even sure if there were any nearby (I don’t believe so).

They are fairly simple amps, perhaps post a few clear photos of the parts in question and someone can probably help.

Yeah that is the best way to search and how I have been doing it for many years now. Most forum built-in search functions are horrific.

I've never been on Facebook and have zero desire to join "groups" there, but sounds no different than actually talking on CB radio. If you think back when CB had tons of local operator on all hours of the day / night, there was a ton of misinformation constantly spouted, I heard it all the time...

My opinion, get something that has easy to find cheap tips and replacement wands. I prefer large chisel tips for most soldering, holds heat and can get out / in quicker. Been using the Atten AT201D for at least 10 years or more. Replacement wands are cheap and easy to find, also uses standard...

I would suggest to keep looking for an original (perhaps a wanted post would help), even if a good used pull. Last time I bought some “new” on ebay they were counterfeit (15+ years ago mind you), they would work as a switch, example: turning an LED on or off, but did not amplify 27MHz RF, they...

Yeah the Chipswitch is awesome. Loved the memory channel bank and being able to scan them. Years ago when local CB was still big with a lot of locals, was great scanning all the local channels / frequencies. I definitely prefer these radios with the Chipswitch! Always wanted another for my...

I didn’t know about the 12v version, but am familiar with the Big Boomer and others. Guess I was just wondering if they had a few revisions of the same model name like the D&A amps. Like a 2 tube Boomer, then a 3 tube Boomer with a driver, etc, but still just the Boomer name. I have only seen...

Were there a couple versions of the Boomer? I have one that looks like the one in post #1, but it only has two tubes, just an empty hole where a third socket looks to have never been installed. Uses a pair of 6JU6 output tubes. Got this one for $20 years ago at a local hamfest from a fellow CBer...

Yeah ExitThirteen's is a hell of a deal! Years ago when I use to look for these / radio gear often, I don't recall being able to find just a Chipswitch by itself, just the chip, for under $200. I don't know if that is the going rate now when they pop up, but they weren't cheap.

Just browsing the forum and seen this, maybe my HR2510's will be worth a small fortune in another 10 years. :D I sold one a number of years back on ebay and it only took one bid at $50. I should have kept it since it had a good final worth that much, was hoping it would bid up, but alas it did...

Never hurts to have a peak inside! And I should note that MOSFET amps will not have the same style biasing circuits the bipolar / "pill" amps have, so going to look a little different should you crack one of those open.

Yes both class C. The most common "AB" biasing you see in CB amps is the resistor / diode feeding the input transformer. Not very good as far as biasing goes, but is easy to spot. The other biasing methods are generally pretty easy to see as well. A huge amount of CB amps are just class C...

Seems the cbtricks owner hasn't wanted to sell, yet doesn't seem capable of maintaining the site anymore. I understand not wanting to sell stuff sometimes, but there has been issues for quite some time now with keeping the site going, so why not sell it and hope it continues to get updated. Was...

I hate to tell someone not to do something, as I grew up / spent many years playing with radios / amplifiers, but if you didn't grow up with radio / RF, learning, etc., and have no understanding of it at all, building an 8 pill is not a good idea. You'll likely never get all the stages nor the...

I just clicked on this thread to read it as I do most other threads, I forgot I had posted in it! I guess 10 years went by rather fast. I haven't tinkered with radio stuff in quite some years now, local radio pretty much died off, and I stopped fiddling. I do miss playing with radio gear, had a...