[Repeater-Builder] Module ID

[n7zef]

 I just received a bunch of loose items ( some would call junk) and I found a 
couple of these modules in some ht's. The marking on the edge of the pc board 
reads (MAXON CA-111C). The marking in the ic chip is MX-COM MX335J.
 I know this could be an encoder/ decoder, just wondering how to use it if 
possible and is there any market value in them (2).
 Thanks
 73
 Mike - N7ZEF