[TowerTalk] Wire 4-squares - they work ! (GAIN?)

[Jim Thomson]

Date: Fri, 14 Oct 2016 17:14:05 -0300
From: "Mike Smith VE9AA" <ve9aa at nbnet.nb.ca>
To: <towertalk at contesting.com>
Subject: [TowerTalk] Wire 4-squares - they work ! (GAIN?)

de Mike VE9AA again.  Can't seem to get this reply onto the list, but see
other messages showing up.  I apologize if this is a dupe !

 

A couple folks asked me where I was getting my gain and F/B #'s from.

Fair question.

First of all, I have no doubt the S-meter on an IC-7410 is not accurate, but
everything is relative.

##  LOL.   Can u switch in a 6db or 12 db RX attenuation pad ?   If so, be in 
for a rude awakening.   Do u have the RX pre-amp on....or off ?   On some
of the icoms,  with all the pre-amps turned on, you are looking at just 7 microvolts
= S9.   And 1 db or less for each S unit below S9.   Find a S4 to S7 signal, then
switch in the 6 db pad.   Then watch the S meter drop through the floor. 
But at least you will know how many S units for a 6-12-18 db of RX padding. 

Jim  VE7RF