Radio Shack DX-392 Zap Question

Radio Shack DX-392 Zap Question

Post by Berton Cors » Mon, 31 Oct 1994 11:32:40

I own a Radio Shack DX-392 shortwave radio (aka Sangean ATS-818CS).
I use an approximately 50 foot long, insulated, 18 gauge wire, running
from the radio, going around the floor/carpet of my bedroom (I'm on
the second floor) and then going into my closet where it stops at the
end of the top shelf.  This set up works fairly well in getting most
shortwave reception.  My concern now is possibly zapping the unit with
some static charge or signal overload which may somehow wreck it, or
hurt its sensitivity.  Any suggestions on my fear here, and whether I
should attach any resistor to where my wire antenna is clipped to the
whip antenna, to protect the receiver's circuitry?
 
 
 

Radio Shack DX-392 Zap Question

Post by Jeffrey Herm » Sun, 06 Nov 1994 03:49:45



>I own a Radio Shack DX-392 shortwave radio (aka Sangean ATS-818CS).
>I use an approximately 50 foot long, insulated, 18 gauge wire, running
>from the radio, going around the floor/carpet of my bedroom (I'm on
>the second floor) and then going into my closet where it stops at the
>end of the top shelf.  This set up works fairly well in getting most
>shortwave reception.  My concern now is possibly zapping the unit with
>some static charge or signal overload which may somehow wreck it, or
>hurt its sensitivity.  Any suggestions on my fear here, and whether I
>should attach any resistor to where my wire antenna is clipped to the
>whip antenna, to protect the receiver's circuitry?

Zack Lau of the ARRL (US amateur radio's national organization)
suggests placing a 1000 ohm resistor between the antenna and
ground terminals to bleed off any electrostatic charge; if you
detect any loss of sensitivity then try a larger value resistor,
say 10,000 ohm.

Jeff NH6IL