[Repeater-Builder] Unknown board

[jeffcarlyle]

Hi all, I posted 4 pics in the photo section of a board I got in a lot
of radio equipment that I purchased.  I have no idea what it is or
what its used for.  All I know is the 2 connectors on the left, the
top says TX and the bottom says RX, and the 3 pots on the right say
Hi, Lo and VCO.  I got 2 of them exactly alike, any help would be
appreciated.  If you have any more questions or want more pics let me
know. Thanks.