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@telus.net> wrote:
>
> Date: Wed, 31 Aug 2016 20:32:19 -0700
> From: Jim Brown <jim@audiosystemsgroup.com>
> To: towertalk@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
>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|