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[TowerTalk] Rotator Brake noise on CW

To: <>
Subject: [TowerTalk] Rotator Brake noise on CW
From: (
Date: Sun, 21 Oct 2001 03:43:55 -0700
on Sat, 20 Oct 2001 22:40:15 -0400 "EUGENE  SMAR"
<> writes:
>his CW note got 
> slightly
> raspy when I depressed the brake switch on the Tailtwister control 
> box.  Not
> enough to distort the signal into obliteration, but enough that I 
> could hear
> it as maybe a T-7 note.  I tried a few other S4-S7 stations and they 
> all
> sounded the same with the brake depressed - a slight amount of 
> raspiness.
> Likewise, the raspiness was also superimposed on SSB signals higher 
> in the
> band.

The problem is with a "ground loop"...control lead grounded at the
tower AND in the shack...remove the field circuit ground connections
inside the control box and let it "float"...let it be grounded at the
tower since
to remove the ground lead there might be difficult. 

Happy DXing!
Charlie, N0TT
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