A little more clarification here relative to my inquiry:
I am only interested in the differences between the different Amphenol
PL-259 plugs. I won't consider using a generic plug from an unknown
The plugs I have with either dark yellow or light yellow insulators are
marked 83-1SP. Amphenol's published data says these have silver plating
on both the body and the center pin.
I was incorrect in stating that I had some with blue insulators; they
actually are green and they are marked 83-1SP-1007. I haven't found any
description of this variety on Amphenol's website. These were very
common at Motorola before I retired. I wonder if they were a special
The plugs I have with Teflon insulators are marked 83-886. Amphenol's
published data says these have nickel plating on the body and silver
plating on the center pin.
There is a variation 83-886-2050 which is Teflon with silver plating on
both the body and the center pin, but I have never seen one of these.
R&L Electronics is selling them for $9.95 each. For comparison, they
sell the 83-1SP for $3.95.
Amphenol's UHF Connector brochure says the insulators used are PTFE
(Teflon), co-polymer of styrene, or mica-filled phenolic. It does NOT
say which insulator is used on each specific part number.
A couple of people have recommended the 83-1SP because the silver plated
shell is easier to solder than nickel plated varieties. I have also
observed this to be the case.
I have found no explanation from Amphenol as to why they use phenolic
insulators in some and PTFE in others. This is what I would like to
understand. Is there some application of a PL-259 where PTFE is
demonstratively superior to phenolic? Or is this just a marketing ploy
to justify a significantly higher price? I would guess that the
difference in material cost between phenolic and Teflon is very low in
the quantities Amphenol buys.
73, John, K9MM
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