[SixClub] Recommended Coax?

[mikea]

On Wed, Jun 16, 2010 at 01:42:49PM -0500, kd4e wrote:
> Based on this site:
> http://www.ocarc.ca/coax.htm
> 
> Belden 9913 is a better brice-performance choice
> than most, except for Andrews Heliax, based on
> loss at 100' but at 150' it changes a little.
> 
> Variables:
> 
> 50MHz
> 100'
> SWR 1:1
> 
> ........................Loss100'..Loss150'
> ---------------------------------------------
> Belden 9913..............0.885....1.328
> Davis RF Bury-Flex.......1.009....1.513
> LMR 400..................0.865....1.297
> Andrews LDF4-50A.........0.464....0.696
> 
> What am I missing, please?

The loss numbers look reasonable at both 100' and 150'; the 150' figures
are 1.5 * the 100' figures, which is the right thing to do. Let's rank
them in increasing order of loss at 100':

........................Loss100'..Loss150'
---------------------------------------------
Andrews LDF4-50A.........0.464....0.696
LMR 400..................0.865....1.297
Belden 9913..............0.885....1.328
Davis RF Bury-Flex.......1.009....1.513

They're still in order with respect to their losses at 150'. Why do you
think you're missing something?

I think I'd try to minimize cost/loss for each run, myself, given that
all the cables were otherwise acceptable.

-- 
Mike Andrews, W5EGO
mikea at mikea.ath.cx
Tired old sysadmin