Question about Uniden PRO510XL 40-Channels Base CB Radio

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Uniden PRO510XL Outup

Hi, I just purchased a clean used Uniden PRO510XL and would like to know if is possible to up the output on this radio and how high would it go?This radio is to be used on a taxi base in NYC. Thanks.

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  • isaiasrho Feb 04, 2009

    Excellent input!, Thanks.

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  • 39 Answers

The Uniden 510 xl is quite possibly the easiest and one of the loudest radios I have ever pumped up .Now here's the problem it's been atleast ten years since I've had the cover off one so I can't tell you which diode # it is you clip for the modulation I know that as your looking at it (speaker side up ) it's about halfway on the right hand side buy the audio transformer.Then you change the resistor buy the final transistor , you go higher until you get where you want it , going higher is going to bring your output wattage down ; I usually tried to get it down around two watts . By doing just these two things and maybe a little adjusting you should be able to deadkey 2 watts and swing to 18 watts with just that cheap stock mic. if you change the final transistor I've seen them swing to 35watts.They are fun cheap radios that when you do this no one beieves that that's all your talking on . Good Luck !

Posted on Feb 04, 2009

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do a search for it. uniden pro 510XL schematic. I found it.

Oct 23, 2013 | Uniden PRO510XL 40-Channels Base CB Radio

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Dec 09, 2010 | Uniden PRO510XL 40-Channels Base CB Radio

1 Answer

I just have uninden pro510xl (used), but don't know how to set the channel (progamming) so it can match with my handheld radio (i use motorola GP200). Thanks...


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Dec 09, 2010 | Uniden PRO510XL 40-Channels Base CB Radio

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1 Answer

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Yes, you need a frequency counter to get IFfreq back were it needs to be. google cb shops in temple, tx

Aug 07, 2010 | Uniden PRO510XL 40-Channels Base CB Radio

6 Answers

Modification of frequency output of uniden pro 510xl


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

Feb 19, 2008 | Uniden PRO510XL 40-Channels Base CB Radio

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