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palomar 300a

R

RoadRunner

Member
Sep 13, 2005
23
1
11
Ohio
i have a jb200 driving the low side of a palomar 300a on channel one i'm seeing 750 watts peak on a dosy meter and on channel fourty i'm seeing around 550 watts i was wondering while there is such a difference between the two channels
 

RoadRunner said:
i have a jb200 driving the low side of a palomar 300a on channel one i'm seeing 750 watts peak on a dosy meter and on channel fourty i'm seeing around 550 watts i was wondering while there is such a difference between the two channels
Click to expand...

Tune the amp on channel 20 into a dummy load if you have one and then check to see if there is a huge difference in power output on Ch.1 and Ch. 40.

If SO then, your radio may be putting out more watts on channel 1 than on channel 40.

If NOT (and the output is pretty close to the same on 1 and 40) then, your antenna is cut / matched in such a way that it appears to show more watts the lower in frequency you go; check your match with the antenna inline.

There should be no wild swings in SWR values between 1 and 40, if so you have antenna problems.

Also, (just an after thought) check your driver by itself, maybe it's tuned for the lower part of the band.

.
 
thanks for the input i'll give it a try if i can find a dummy load been real busy this past week so i ain't had much time to check it out
 

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