[TenTec] Front End Protection

RICHARD ANDREN andrenr@ul.com
Mon, 12 Oct 98 13:11:51 CDT


Ken, the initial posting on this was my concern of a static potential on a 
disconnected antenna.  The charge has been proven to exist.  Then I 
realized that my tuner/antenna coupler has an antenna switch that is 
non-shorting, and could allow a static charge to be connected to the input 
of my radio when switched.  Stuart K5KVH, and others, pointed out that a 
100K, 1/2 W resistor will be 2000 times the 50 ohm impedance of the radio.  
This resistor could be soldered on a connector and assembled to a "T" 
connector which would be a constant drain on any static charge, but would 
be a very high resistance to the radio.  In my application, I can simply 
add the 100K ohm resistors inside my tuner.

Hope this helps,

73/DX de Rick N9THC
-------------
Original Text
From: <KMerzel@aol.com>, on 10/12/98 10:24 AM:
	Last week there was a posting regarding using a coax T connector with 
a 100K
1 watt resistor between the center and the sleeve to dissipate static 
buildup
on the antenna.  How can this arrangement be "transparent" to a 100 watt
output at these values and still dissipate a static charge?  I fully admit 
my
lack of understanding.  Any elucidation will be greatly appreciated.  
Thanks.
      Ken

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