km1h at jeremy.mv.com
Sat Mar 1 19:15:22 EST 2014
ON4UN and others suggest 15 meters I believe. Ive used 25-30' here and it
does well with 5 2 wire Beverages with their ends and antenna grounds also
spaced from each other by at least 30' and a few at 150-300'.
With high attenuation common mode chokes on everything I can get away with
RG-6 feeds tacked to trees at 6' high to the relay box and then 750' of 1/2"
CATV hardline on the ground almost to the house. Where it has to cross the
lawn for about 60' I added another ground rod and then elevated RG-6 into
the house where there is another ground rod and ferrite choke. I made a
direct buy right from Fair-Rite with my business account and met their
----- Original Message -----
From: "Mike Greenway" <K4PI at BELLSOUTH.NET>
To: <topband at contesting.com>
Sent: Saturday, March 01, 2014 6:44 PM
Subject: Topband: Grounds
>I am building a new two wire beverage and have built many in the past that
>seemed to work okay but I am paying close attention to detail on this one.
>I have a couple of questions to start. Most all agree that the antenna
>xfmr ground and and the coax ground should be separate. How much distance
>between the two ground point is recommended for this? Also is there a
>problem using the same ground for both coax feeds? ON4UN recommends a
>common mode choke about 15 feet away from the feed point but at present I
>am not installing those yet.
> 73 Mike K4PI
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