At 08:10 PM 09/05/10, you wrote:
>I just aquired a second msf5000 to make a 2 meter repeater our of 
>and it has a part not present in the first station.  I suspect it 
>could be a rx preamp due to the fact it has coax input and output 
>and it is wired in series between the duplexer rx port and the 
>receiver rf input.
>It appears to be an aluminum block rack mounted just below the power 
>supply and is about 1.5" thick and about 8 or 9 inches wide.  I did 
>not see any electrical connections so if it is a preamp it must get 
>power from the coax into the receiver.  I am not familiar with this 
>device.  My other station did not have this part.  Perhapps it is 
>sopme kind of filter?   Both stations are the digital capable models 
>which I program with the rib and old laptop.  Any ideas 
>please!  Pictures on request if needed.

Is there a Moto part number on it?
Either a multi-digit, something like 01V12345A01, or
one with three letters and 4 digits, something like TLD1111,
possibly with a trailing letter?

Mike

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