I believe that in most installations providing glideslope the KX-170B is
either paired with a KN-214 indicator that has a built-in GS receiver or
with a KN-109 indicator and remote KN-75 GS receiver. In both cases, the GS
receiver is "channeled" from the KN-170B. I suspect that (the channeling
connections between the KX-170B and the KN-75 or KI-214) is where your
problem lies.

--
-Elliott Drucker