[TowerTalk] Coax Sources

[Marvin Shelton]

Is there a listing somewhere that identifies which types of coax are flooded and which are not?

Best 73's
de Marv WA2BFW/7
(from my iPad)

> On Sep 1, 2016, at 5:42 AM, Jim Thomson <jim.thom at telus.net> wrote:
> 
> Date: Wed, 31 Aug 2016 20:32:19 -0700
> From: Jim Brown <jim at audiosystemsgroup.com>
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] Coax Sources
> 
>> On Wed,8/31/2016 8:12 PM, Wilson Lamb wrote:
>> I have been ordering 400 equiv from Shireen.
>> Half the cost, or less.
> 
> Coax performance and durability is largely a matter of manufacturing 
> quality.
> 
> "LMR400 equivalent" is NOT a performance spec, it is an advertising 
> claim. And as K8RI has noted, LMR400 itself has some problems. Those who 
> buy ONLY on price and performance "claims" often get what they pay for 
> -- less.
> 
> Those wanting to learn more about coax might find 
> k9yc.com/Coax-Stubs.pdf helpful. Nobel Laureate K1JT heard my talk on 
> this at Pacificon several years ago and complimented me on it.
> 
> 73, Jim K9YC
> 
> ##  Everybody and their dog was making LMR400 equivalent years ago, even cushcraft.  CC ultralink.
> A lot of it was used here in town with great success, still in use.  10 ga center conductor, and one half
> the loss of 213..and a lot lower price tag. Quality on all of it is superb.   The LMR-400 that K8RI is talking
> about is their ULTRAFLEX  version..called LMR-400UF.    400UF..and also  600UF, both have
> what appears to be a  pure rubber outer sheath.   Very very soft material, and also 
> prone to abrasion, nicks, cuts, scraping, tears, and not good with UV..and also freezing ice. Easily cut
> into with any razor knife..like butter. 
> 
> ##  I have a 100 ft roll of  Tcom  ultra flex 600, made by times microwave.  Same  deal,  super soft rubber
> outer jacket.  You have to be real careful with its intended  application.   However, the tcom 600UF  is far more flexible
> than 213 ever will be.  The tcom 600uf is like spaggetti.   Instead of the usual 7 strands in the center, it consists of 
> 27 strands of silver plated cu. Silver plated foil, and silver plated braid.   Far more flexible than 600UF. 
> 
> ##  I would not hesitate to recommend or use LMR-400 equivalent coax.  I have examined both the times version,
> and a few other equivalent versions,  counting strands, strand gauge, center conductor gauge,  sheath thickness,
> foam thickness, and  could not tell the difference between em...including loss.   Andrew is not the only one 
> who makes heliax.  Several other makers of   heliax equivalent make as good, and in several cases, a lot better version. 
> 
> Jim  VE7RF 
> 
> 
> 
> 
> make up, nu,mber
> 
>