On 5/7/16 8:54 AM, marsh@ka5m.net wrote:
Well, Amphenol uses PTFE in their RF 83-1SP PL-259 Coaxial Connectors and RF
83-1AP UHF Right Angle Coaxial Adapters
From DX Engineering's website:
one can actually go to the horse's mouth, as well:
http://www.amphenolrf.com/083-1sp.html
"Insulator Material PTFE"
http://www.amphenolrf.com/downloads/dl/file/id/305/product/3945/083_1sp_customer_drawing.pdf
which says INSULATOR - LCP
which isn't the same..
the 083-750 seems to be the only one that lists LCP as a dielectric
In UHF connectors, Amphenol seems to use:
Delrin (5) (a white plastic)
LCP (1)
PBT (5) (a sort of light tan color from the picture on the web)
(083-1R, for instance)
Phenolic (21) (an even lighter tan... seems to be only crimp connectors,
the 083-58SP for RG-58, for instance)
Polypropylene (1) ( a straight crimp 4 hole flange SO-239 jack - dark
brown dielectric)
PTFE (23)
I have no idea what LCP is (liquid crystal polymer? - Vectran and Kevlar
are examples)
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
Richard (Rick) Karlquist
Sent: Saturday, May 7, 2016 9:01 AM
To: Don W7WLL <w7wll@arrl.net>; Towertalk <towertalk@contesting.com>
Subject: Re: [TowerTalk] Right Angle Connectors
On 5/6/2016 6:36 PM, Don W7WLL wrote:
After reading specs that the Amphenol used PTFE
(all of my Amphenol of a later vintage appear to be clear insulation)
Don T
Where did you read that Amphenol used PTFE?
I have never heard of that.
BTW, PTFE is never clear, AFAIK.
In any event, PTFE is greatly inferior
mechanically, and has no electrical
advantage at HF, or even UHF. It's
high temperature rating is also of no
consequence for most ham applications. I don't know why any knowledgeable
person would even want it, except in some corner case like a common mode
choke made with PTFE coax.
Rick N6RK
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