Question about Uniden PRO510XL 40-Channels Base CB Radio

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Modification of frequency output of uniden pro 510xl

How do you turn up frequency output?

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Deweyp, hi, if you are wanting to turn the power up some on the radio, do this; tune L4, L5, L6, L9 for
maximum RF forward output. There are 2 versions of the radio, and both are listed as 510xl. If you are wanting to expand the freq's or add channels, then no, there is no mod for that radio. If your going to tune the radio for more power, make sure you have a power meter to watch the output. It is preferable to tune into a dummy load so your not broadcasting over the air. You tune the radio for peak output, using a steady awwww sound in to the mic. Just be careful as that radio has a fairly small driver and final transistor. Don't want to let the factory smoke out of it,,,
Here is what the little variable adjustments are for and what they control;
VR1 Squelch
VR2 TX Meter
VR3 RX Meter
VR4 RX IF Gain
Hope this helps you out, let us know,, Mechanic

Posted on Feb 19, 2008

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Don't clip anything. In the older version clipping d14 would open the modulation power but ultimately burn out the finals. SO DON'T clip anything.

Posted on Mar 06, 2008

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There is a frequency conversion using certain crystals from old CB radios made back in the early years. I have a friend who has 26.895 in his because all of the locals talk on the lower channel. On most exports it's channel 34, 1 band down from regular CB band.

Posted on Dec 20, 2015

Dont touch the radio
simply buy a better antenna and perhaps an amplifier
you can get a RX and TX amp for £30 or so
this will boost both TX and RX

but you need to make sure your antenna is aok and has a good resonance and SWR

so you need a decent meter to check it with the added output

Posted on Dec 02, 2014

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Well the question was
Modification of frequency output of uniden pro 510xl if you are wanting to add more frequencies or channels to your radio it is possible however it can be a bit expensive as well as have some legal issues instead i would like to invite you to become a ham radio operator and you have a wide range of frequencies to acsess and a plethora of different modes it is very easy to do and cost less than modifying and possibly damaging your equipment..

Posted on Jul 12, 2014

In the newer version clip D 203 and retune

Posted on Aug 28, 2008

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