For sales shipping outside the US, please see my listing on ebay

Clearly marked jacks by function:

TX/RX Data connection from the TX500 Manual:

Also from the manual, TX/Mic is wired mono, RX/SPKR is wired left and right mono.

As an FYI, the group admin is now blocking me from sending links to the different things that
I do to support you that no one else does. Really, how much do I make off cables?
So much for supporting their user base, stupid!