Sorry for taking to the field or sharing here what works for me in my
EMC/Lightning Lab on a daily basis. We make tens of thousands of dollars
every year off those who fail to ground properly. That figure does not
include the cost for damage to test samples and careers. Over the years
I've had several know it all's take up software engineering instead.
It is my experience that the remote ground rods help in several ways,
including CM suppression. Also a tight coil of coax cable helps some
too. The delta loops were our toughest one to tame which ended up
requiring a ground rod and 40ft of RG-213 coiled, itwas about 12" dia.
The dipoles and tri-band yagi's were all balun fed, and were well
behaved. We did coil the RG-213 once the coax reached the ground as an
added precaution.
IMHO if the ham who began this post, is going to stick with a 2
transmitter deployment the 130ft zepp with ladder line will serve him
very well from the mid west. Especially if he can get them install 60ft
high between two trees. They will have a ball on 80 - 15 meters.
CQ Contest!... oh yea, Field Day is an operating event.
73, Don KO7i
On 4/16/2015 12:13 AM, Jim Brown wrote:
On Wed,4/15/2015 11:32 PM, Don Jones wrote:
a decent ground at the tuner
A connection to earth has NOTHING to do with EMC, RFI, or interstation
interference.
Yes, common mode is damned important, and so is separation.
73, Jim K9YC
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