I wasn't sure of the model number until Milt confirmed it. That repeater
does go down into the ham band very nicely, once you plug in crystals.
Re-rock it, and it tunes right down. I did one a number of years ago to
443.0-ish with no problem, and it's been running ever since.
Not a bad little box for what it is.
Like Milt said, check it out where it is now THOROUGHLY, then you can
order rocks and tune it down.
On 5/19/2010 11:25 AM, Milt wrote:
> Gary,
>
> The Uniden ARU-251K is a 450-470 MHz CRYSTAL based repeater/base
> station with a very limited internal controller. If it can be
> dropped into the 440 ham band you will then need an external
> controller. The standard duplexer with the unit is a simple notch
> type which may be suitable for operation on an isolated site but will
> be nothing but problems on a crowded one. The first thing to do is
> to check the repeater on the frequency that it is currently set up
> for and determine if it is working properly. After that with a
> service manual and the proper test equipment and a new set of
> crystals you may be able to move it into the ham bands.
>
> Milt N3LTQ
>
> ----- Original Message ----- From: ke5...@yahoo.com To:
> Repeater-Builder@yahoogroups.com Sent: Tuesday, May 18, 2010 8:24 PM
> Subject: [Repeater-Builder] uniden aru 251k
>
>
>
>
> I have this repeater and I need the modification for 440 amateur use.
> Any help on this will be appreciated. Thanks in advance. Gary Sent
> from my Verizon Wireless BlackBerry
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