[TowerTalk] Right Angle Connectors

[jimlux]

On 5/7/16 8:54 AM, marsh at 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 at contesting.com] On Behalf Of
> Richard (Rick) Karlquist
> Sent: Saturday, May 7, 2016 9:01 AM
> To: Don W7WLL <w7wll at arrl.net>; Towertalk <towertalk at 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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