[CQ-Contest] Remote station antenna disconnection methods?

Jim Brown k9yc at audiosystemsgroup.com
Fri Oct 30 14:09:02 EDT 2015

On Fri,10/30/2015 7:56 AM, Gerry Hull wrote:
> Anyway, our strike did not come in via the antennas on any of the four
> towers.  It came in via the DSL line, destroying the DSL Modem, several
> switches, two computers connected to those switches, an FT1K MP connected
> via one of the computers, and, unfortunately, the control electronics in a
> Hammation 2x8 antenna switch, via the USB (ALL the RF was fine.)

This is a perfect example of why

1) BONDING together of ALL grounded systems and equipment is so important

2) shunt mode (MOV) protectors on branch circuits CAUSE destructive 
failure. The only safe (non-destructive) surge protection on branch 
circuits is SERIES-MODE. SurgeX is the major mfr of series-mode 
protectors. They aren't cheap, but neither is the stuff you blew up, and 
a single 20A unit can run everything in most single-op stations except 
240V power amps.

Study http://k9yc.com/GroundingAndAudio.pdf

73, Jim K9YC

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