[Repeater-Builder] GE Rangr problem

[Dave]

We are trying to use a UHF GE Rangr that is on packet at the repeater 
site as a control radio for the repeater also.
This is most baffling - having any TNC hooked up to the GE Rangr 
defeats the decoding of CTCSS used to open the port on the repeater 
controller!  I've tried two KPC-9612s (one + one old) and a PK-96,  If 
the TXA line is connected between the TNC and the radio -  no decoding 
of CTCSS.
Otherwise the Rangr works just fine as a packet radio.