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The output impedance is SET by the class of operation, plate voltage and instantaneous plate current (read that as PEP plate current). It has NOTHING to do with the tubes in the amplifier... EXCEPT for Cout and Cin, and for a smaller part, interelectrode C (to CB type amplifiers). The...

Not a good bet, on the Dentron part owner bs line. Dentron was owned by 2 people, all the way up until Denny screwed up. Denny Hadd owned Dentron, all the way up until his penis found its way inside his secretary's vagina. THEN, his WIFE owned Dentron, ALL the way up until the idiots at...

RM Italy the money goes to Europe. Galaxy / Palomar / etc. the money usually goes into someones pockets here in the USA. Somethin to think about. Of course, if you shop at Wal Mart, then who cares (and that REALLY FUCKING PISSES ME THE FUCK OFF, since they MADE their reputation on MADE IN...

As the other gentleman said, there is a cap that will be causing a delay. Their are MANY revisions of the 225 series of amplifiers, but only a couple electrolytics in each one. Usually, you find 2 to 3. 1 or 2 of them will be across the 12 volt input wires. They are their to keep LOW...

The 4CX600 is ULTRA LINEAR. As Paws stated, it's designed for AB1. It's akin to the 4CX1000 type tubes. For the price, I'd purchase 4-5 YC-156s, run them class A, and still have twice the output, more linearity, and be able to go to 10 KW +. And when a tube DOES go out, it only costs ya...

That depends. Typically, they have no bias, so no. They DO NOT faithfully reproduce an SSB signal. They make it louder, but also make the recieving station actually have to LISTEN to what you are saying, because they introduce distortion. YES, they are great!!!! They show 200 watts out...

Some things get made MUCH harder than they need to be, just so people can see their name in the hall of fame.

Same radio here. Don't forget the brown wire. Use it. It activates 20 watt mode, and all of a sudden, you're good to go for ??cb?? linears :) Also, you set the drive power needed with the grid resistor and the step up / down xformer. Tet's with passive grid input are the way to go... The...

You never had a big enuff linyeeare Once you convince them it's THEIR fault because it's still getting bleedover while UNPLUGGED, they believe you :) Or they believe that it's posessed. Either way, usually the device offending YOUR GOD GIVEN RIGHT TO OPERATE is gone. :) --Toll_Free

I always thought issues where resolved with the biggest linear.???

Oh-Tay!!! (in my best Eddie Murphy Butt-Weat voice)... This is making more sense now. 22 uF for the cap. It's in the bias circuit, I'm almost certain. If not, it's the ssb delay. Either way, it's not HYPERCRITICAL to the performance to your amplifier, nor would I think they are related...

Pull all 3 leads from the transistor. Does it still pull lots-o-current? Can you also pull the board (Or leads, depending on vintage) and test for bias current, IE, can you set bias, or do you pull like an amp of Ibias? --Toll_Free

Am I the ONLY one not ignoring the fact that since he can read the parts values, they probably aren't blown???? You can use a 1/2 watt device across combiners and splitters. If you're dissipating that much in your combiners, you need better RF layout. Matter of fact, combiners and...

This can be caused by not being tuned correctly. The PDX-400 was / is a 15 meter TRANSMITTER for CW. It was modified for 10 meter use. It was D & A's answer to the 10/11/6 meter rules that came about in the late 70s / early 80s. What's surprising is: They didn't get away with the SAME...

Why would you charge different rates for different "types" of CB radios? That's such a dick move. "The more expensive your radio is, the more I'm going to be able to charge you before you decide it isn't worth repair"..... EVERY electronic item that comes across my bench is a flat 35...

Where are you at, aand what is the problem? --Toll_Free

Umm... You can read the color code on that resistor. The cap, you can read the value on, and get it off an online calculator. TYPICALLY, when you lose a combiner or splitter resistor, you've had a problem with at least one transistor..... And if you took out the capacitor in the bias...

Just an FYI, and something NOBODY thinks about: You can always take the button faces off, turn them over, and live with the meter being backwards. It's a relative meter anyway. --Toll_Free

If they LOOKED wirewound, but where NOT, they where HIGH VOLTAGE (pronounce that as "REALLY high dollar" resistors). I bet they where the "audio non-inductive" resistors..... Those they wrap half of the resistor one direction, and the other half in the opposite direction. Supposedly, on a...

It's cheaper, easier to implement, eases thermal issues and above all else, allows a greater amount of Pout (saturated) than a biased amplifier. It also allows higher levels of Vce, allowing higher again amounts of power output, etc. --Toll_Free