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Palomar 150watt bi-linear amplifier for c.b. radio-won't transmit

This RF amp. used to dead-key 3watts & swing to 150watts pep. Now, the unit is turning on,lights are working,pre-amp. is working. But when I key up my c.b., (dead-key set at 1watt) the relay inside of the amp. engages, But won't put out anymore than 1watt. I did find a snapped resistor(470 ohm) & replaced it,but didn't solve problem. Can you steer me in the right direction,to bring this ''SCREAMER'' back to life? Mark Hopkins

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  • markhopkinsj Jan 06, 2009

    Dear trapsenault: After I replaced the snapped resistor, I found a crack in soldier leading to "pill". Unit is back to being a "SCREAMER". Thanks markhopkinsjr47@gmail.com

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3W to 150? Now you got 1 W in and 1W out and a snapped resistor. I would look at the driver and or final, either something heated up bad and cooked the resistor or you might have a break in the pcb.

Good Luck, Tom

Posted on Jan 02, 2009

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