[amsat-bb] Re: Ft-847 & icom preamp

Floyd Rodgers kc5qbc at swbell.net
Thu Jun 13 11:07:25 PDT 2013

I have used mirage and an older preamp with my 847, but not powered by 
the rf ports. I must admit I did smoke the non mirage through complete 
absent minded issue. I was trying to play with arecibo on 432 (read 
excited) and plugged in the digital stuff to the 1/8" radio port while 
all were powered. When one of the rings shorted, radio went to transmit 
at full power which killed the preamp. Also be aware 847's have nasty 
habit of a very short full power burst at powerup on what ever band you 
happen to be on. Not wanting to trust the rf control part of the mirage 
preamp, I run direct hard control using the amp control signal port from 
the radio.

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