fxbuilder wrote: >We purchased a uhf repeater from a local SoCal GMRS dealer and have >had problems with it's working correctly since we purchased it. The >controller is actually a ComSpec TS64 and the 2 radios are 4 channel >maxons. The white wire (rx audio mute) is used to drive the PTT on >the transmit radio. What we are finding is that it doesn't keep the >repeater in transmit mode, it stutters. Semi weak signal heard by the >receiver (almost a clear signal) will cause the transmitter to cut in >and out or not work at all. We asked for help from the dealer who >promised a new controller but never has delivered (its on the test >bench). Anyone have suggestions on what might be causing this problem? > Is there there something we need to put between the comspec and the >mic ptt line? Or is the ComSpec bad? A different controller could be >a possibility but not really in the budget (especially when the dealer >said they made a ton of these and they all work great). What are we >missing? This is GMRS so no Iders required. Thanks for the help. >Craig > >
You mentioned this occurs when a 'semi weak signal' is heard. Does it do the same thing if an extremely strong signal (someone keys up right outside) is present? If the problem only happens with less than very strong signals, you are likely getting transmit energy into the receiver from inadequate isolation within your antenna system. If it does it on all signals (weak or strong), an earlier post mentioning excessive PTT current is likely the problem. Ed Yoho WA6RQD
