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New Uniden pro520xl dead key adjusting

Discussion in 'Amateur Radio Modifications' started by Roadhog, May 17, 2018.

  1. Roadhog

    Roadhog New Member

    Apr 25, 2018
    Likes Received:
    How do you adjust the dead key on a new pro 520xl? I would like to run a small amp with it. Any suggestions? Info?


  2. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

    Oct 23, 2017
    Likes Received:
    Welcome to WWDX! I just checked CBtricks website and they don't seem to have any information on this radio. Maybe someone here can point you in the right direction.
    Roadhog likes this.
  3. nomadradio

    nomadradio Analog Retentive

    Apr 3, 2005
    Likes Received:
    That radio does not contain an adjustment for this.

    You will find that most SSB CB radios made since 1980 or so will have an adjustment for AM carrier power.

    Your radio is built for AM only. Nearly every CB of this type requires parts to be added if you wish to reduce the carrier power without also reducing the modulated "swing" power of the radio at the same time.

    I have none of the technical info on hand that's needed to to be specific about how to do it on this model.

    Short version, it has to be modified to reduce the carrier power, far as I know.

  4. Handy Andy

    Handy Andy Do Your Research First, Then Decide...

    Apr 23, 2018
    Likes Received:
    Ok, gotta' ask...

    You are aware that this may not be the proper location in the forum for this thread, you may want to Segway over to another board - IN This Forum - so we don't bother those that may take offense to this procedure...

    Open that baby up and tell us what you see...

    What you tell us, can help us, tell you from us, what can be done...

    There are at least 3 types of Pro-520's out there...

    AXL - kit with an antenna
    XL - basic Radio

    XL model though - came in several "flavors".

    One was Discrete - I can help you with that -anyone can - for they can be "jumped" with an RC mod for swing and power adjustments for matching to a Leen-yar..."

    Another was more compact and used a lot of surface mounts - but you still had some breathing room to remove a coil that went to the Driver so you can still install an RC mod like above.

    The ones I'm seeing lately are SMD (Surface Mount Disasters) meaning they have all the small parts and coils fixed onto a single board and no way to modify it easily using everyday household tools, cleaners and small power tools...

    So, do like they do at those car dealerships - open the hood, snap a photo or two - and let us know what you find...

    :+> Andy <+:
    #4 Handy Andy, May 22, 2018
    Last edited: May 22, 2018
    PA770 and Shadetree Mechanic like this.

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