[600MRG] Don't scrimp on the shack grounding

jrusgrove at comcast.net jrusgrove at comcast.net
Sun Mar 18 14:27:41 EDT 2018


Andy

Didn't you once mention that your loading coil is in the shack? 

Jay W1VD

----- Original Message -----
From: Andy - KU4XR via 600MRG <600mrg at mailman.qth.net>
Reply-To: Andy - KU4XR <ku4xr at yahoo.com>
To: 600 meter group <600mrg at mailman.qth.net>
Sent: 3/18/2018 2:03:03 PM
Subject: [600MRG] Don't 
scrimp on the shack grounding


Hi all:

I suppose we all are well aware of the need for good grounding. Much is said
about RF ground, and Lightning protection.. and proper wire sizes..
After my plunge into the transmit side on 630 meters; I discovered that my
shack grounding - which seemed to be adequate even on 160 meters - was
woefully inadequate on 630 meters. I discovered this by seeing my metering
change when my hand got close to, or I moved a wire around. Knowing this 
was not a good thing, I have been on a 2 day excursion thru the shack 
replacing, or adding " Large guage " ground wire, and bonding station equipment
together as it should have been in the first place.. WHAT A DIFFERENCE !!
The improvement was immediately seen. Quirky actions from the equipment
settled down, and The exciting improvement I am seeing is an increase in
RF Current !! It has raised from 1.2 amps up to 1.3 amps, and doing the
math shows that my Feedpoint Impedance has dropped a couple of Ohms..
So, I'll log this one in the " Lesson Learned " catagory.. Now, on to the
next lesson..

73 all:

Andy - KU4XR
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