[TowerTalk] Right Angle Connectors

[Roger (K8RI) on TT]

My new Amphenol connectors use Teflon insulators which is white with a 
waxy like feel.  Teflon handles moderate temperature and voltage well, 
BUT, don't apply a really hot soldering to it as the byproducts produced 
are poisonous. Clear could be plexiglass, Lexan, or ? Both are good 
insulators, but plexiglass does not stand up well to heat.
I just went to the shop: The surplus 90s are clearly marked Amphenol in 
"raised" letters.  Some have clear plastic and some have a gray 
insulator.  Please note, these are old, and that is probably well over 
40 years old.

Teflon has at least three down sides. They are its response to very high 
heat, it tends to "cold flow" which is not usually a problem, in ham 
installations, and it's expensive!.  It is much more resistant to center 
conductor migration than foam dielectric. HOWEVER Teflon makes a very 
poor mechanically loaded insulator.

My new  Amphenol connectors, UHF, N-Type, and bulkhead connectors all 
have White Teflon insulators.

"I think" you will find "really old" Amphenol PL259s have phenolic 
insulators as they were made before Teflon was invented.  I actually had 
some of those when I was a Novice 55 years ago.  I believe  Gary was 
correct,when he said the good ones have the male center screws into the 
other pin.

Now days I usually use crimp connectors. They are quick, easy, and 
mechanically stronger than the solder type PL259s.

73

Roger  (K8RI)


On 5/6/2016 Friday 9:36 PM, Don W7WLL wrote:
> Got a lot of feedback re the subject connectors and overwhelming the suggestion was to use Amphenol parts, which I usually do (but I have a lot of inherited connectors).
>
> I had never paid a lot of attention to connectors for my 8, 213 and similar coax’s, but I did note that the color of the insulator varied.  After reading specs that the Amphenol used PTFE (all of my Amphenol of a later vintage appear to be clear insulation), I took a look a some of the right angles I had plus a pile of my barrels. Of those NOT marked Amphenol, almost all had no readable brand or number imprinted.  I also noticed that the insulation was either white or shades of grey.
>
> I’m not knowledgeable on plastics and am now curious to know what the white or grey material used in these ‘other brand’ connectors might be (I’m dangerous enough to know a lot of plastics do come in several colors).
>
> Don T
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk


-- 

73

Roger (K8RI)


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus