[TowerTalk] What am I missing....balun

[Jim Thomson]

Date: Tue, 21 Feb 2017 21:24:16 -0500
From: Hans Hammarquist <hanslg at aol.com>
To: towertalk at contesting.com
Subject: [TowerTalk] Fwd:  What am I missing....balun

This doesn't explain why PTFE should not keep up outdoors. Rather the opposite.

Hans - N2JFS


-----Original Message-----
From: Guy Olinger <k2av at contesting.com>
To: john <john at kk9a.com>
Cc: Towertalk <towertalk at contesting.com>
Sent: Fri, Feb 17, 2017 3:00 pm
Subject: Re: [TowerTalk] What am I missing....balun


See https://www.coleparmer.com/tech-article/uv-properties-of-plastics

73, Guy K2AV


##  The outer jacket on 393 and 142 is not PTFE.    PTFE is used for the
dielectric inside.   PTFE aka  terflon. 

##  Outer jacket is  FEP-9 .    These cables are made by everybody and their dog.
Made in the UK, china, rfs makes it, so does times microwave, belden, and a bunch more.
I suspect its either a quality control issue, or a tweak in the formulae, rendering it semi useless 
for UV outdoors.   Im not going to take a chance, and will 88 or 33 tape it the entire length.
Which is not vey much, so not an issue.  Its too expensive as is, and 33 or 88 tape is cheap
insurance. 

Jim  VE7RF