Can you configure the AF base to output CMR messages?  Do you know what message the AF Base is outputting?

I used an AF base several years ago, but that base had no User Interface.  You pluged it up and it ran.  You could make no changes to it.  I don't know what the capabilites are of the current AF base.  But, if it will output a message that Trimble can read it will work with the correct radios.