I have and been using a RM 150+ amp with the 1500 for a copula of months now. Mostly ssb, The amp keys from its RF sense circuit and works fine. I want to key the amp ,using a hard key line. I know that pins 3 and 1 of? the FLEX connector, will produce a closing contact on transmit. Is there anything? strange on the flex that would prevent these contacts to close a small 12 vdc reed relay ?Has anyone come up with a simple amp control interface for the 1500? I hesitate to experiment on the 1500 ,seems so easy to damage. ???? Any help on this or a few ideas as to the best way ,would be greatful to hear them. thanks dale wt4t
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