[TowerTalk] Coax Losses on 160 and 75?

Jim Brown jim at audiosystemsgroup.com
Sun Aug 7 15:01:09 EDT 2016


On Sun,8/7/2016 10:04 AM, Jeff Liebermann wrote:
> I would be ham number 10.
> https://www.pasternack.com/flexible-0.405-rg11-75-ohm-coax-cable-pvc-jacket-rg11a-u-p.aspx 
>
> No foil and it looks like good braid coverage, although coverage
> is not in the specs. 

In my limited experience, Pasternak is an expensive source of cable, 
although the cables I've found with that name on it have been of very 
good quality. Not long after moving here in 2006, I found a partial 
spool of a Pasternak RG6 in a surplus outlet. It has a copper center and 
TWO rather dense copper braid shields.

The best bargain I know of for all-copper RG11 is the one sold by Davis 
RF. It is private labeled for them. I have no idea who the actual mfr is.

Another limitation of CATV coax is that only CATV crimp connectors work, 
and the only ones that are widely available to fit it are F-connectors 
or BNCs. I find the Snap'N Seal branded connectors to be quite good, but 
they 1) must physically match the cable dimensions; 2) stripping and 
crimp tools that match the coax must be used for a good connection; and 
3) F-connectors require adapters to connect to our antennas, and most 
F-connector adapters I've seen are of highly questionable quality.

73, Jim K9YC



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