Roger, You would add your own output that would stay low until the sequencer out for triggering the PTT on the rig is active. This output would also only inhibit the rig when on 2M (a requirement you mentioned), by monitoring the band data outputs of the radio. You would have to build this logic yourself, and add it to your sequencer. (probably not enough time before this weekend's VHF contest...) As I said, it would take some work. But what you are asking for is insurance against operator error. How much does it cost (in time and effort) to rebuild the LNA when you blow it? Or, you could just stay away from that TX button... ;-) 73, Bruce, N1RX > Thanks Bruce. > The sequencer is an SSB DCW2004 B. It does not seem to have a state-change > output from rx to tx. It has inputs to earth or high to trigger the sequence > and then delay outputs to sequence the devices. > So I am note sure that would work.. > Roger
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