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Palomar 300 help request.

M

mebmark1960

New Member
Dec 31, 2014
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Hi Folks, Has anyone seen an amp like this Palomar, I can not find any info on it. I am driving it with a Uniden Washington. I have a 2 watt dead key on am, around 18 watts SSB. It swings around 200 watts PEP on AM and 225 watts on SSB with my radio shack meter. It has 4 mrf 454's. My SWR's with amp on are 2.2 on 26.815, 1.5 on 26.965, 1.01 on 27.185, 1.15 on 27.385, 1.8 on 27.585 and 2.8 on 27.795. With the amp off they are 1.3 on 26.815, 1.1 on 26.965, 1.0 on 27.185, 1.02 on 27.385, 1.2 0n 27.585 and 1.5 on 27.795. Is this about right for this amp? Also what is the trimmer capacitor for and how should you go about adjusting it. Thank you in advance for your help. Mark.
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Why would you want to adjust the trimmer pot? Use the amp. Keep the unput to about where you have it now and it should do fine. Don't worry about squeezing more watts out, won't make a bit of difference on the receiving end. Loaf it along and it will sound cleaner and last a lot longer. JMHO. And your vswr readings are fine for 11m use. Don't use the amp with a VSWR of above 1.3-1.5:1 IMO. Clean in equals clean out.
 
222DBFL said:
Why would you want to adjust the trimmer pot? Use the amp. Keep the unput to about where you have it now and it should do fine. Don't worry about squeezing more watts out, won't make a bit of difference on the receiving end. Loaf it along and it will sound cleaner and last a lot longer. JMHO. And your vswr readings are fine for 11m use. Don't use the amp with a VSWR of above 1.3-1.5:1 IMO. Clean in equals clean out.
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Thank you for your reply 222DBFL, the only reason I would want to adjust it is to correct what somebody else may have done wrong, I just want it to be right.
 
The capacitor is there to allow you to match the output impedance of the amp to the input impedance of your antenna. Keyup on AM, and inject a 1000hz tone. Adjust the cap for maximum output. Then you're good to go.

- 399
 
unit_399 said:
The capacitor is there to allow you to match the output impedance of the amp to the input impedance of your antenna. Keyup on AM, and inject a 1000hz tone. Adjust the cap for maximum output. Then you're good to go.

- 399
Click to expand...
Thank you very much unit_399!
 

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