Should be VERY negligible. I'd ground the coax barrels at the top and
bottom of the tower to provide lightning protection too, while I was at it.
73,
Joe
WDØM
At 12:36 PM 10/11/2004, Tom Martin wrote:
I am replacing a 90' length of RG8 water damaged coax to my 40 meter
beam. I have LMR 400 for the main run up the tower but want to use a RG8
section for the rotator loop. There are two ways to do this. First, a 14'
section of RG8 from the feed point of the beam with one PL259 and one
barrel connector to join the LMR. Secondly, a 10' section of LMR and
PL259 to a barrel connector and a 4' section of RG8 for the loop to join
the LMR that goes down 80' to the antenna relay box at the base of the
tower. This configuration would require 4 PL259's and two barrel
connectors. I want to avoid the many possible problem areas with the
multiple connections. I think that I have answered my own question but
wasn't sure if adding that much RG8 to the run would offset the benefit of
the LMR 400. I suppose on 40 meters the loss would be negligible. Am I
correct?
73,
Tom W8JWN
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
any questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|