Date: Mon, 16 Jan 2012 12:48:31 -0500
From: Frederick Vobbe <firstname.lastname@example.org>
Subject: Re: [TowerTalk] PL259 Insertion Loss?
On 1/16/2012 12:24 PM, Steve Hunt wrote:
> If you had 0.3dB loss in a connector I doubt you or the guy at the other
> end would hear the difference. But if you ran 1.5kW through it you'd
> probably smell the difference!
> 100w is a lot of power to dissipate in such a small volume!
> Steve G3TXQ
### If they had .3 db loss... they would be on fire !
Never even considered running anything greater than 500 watts through a
PL259, to be honest with you. I know they are rated for higher power,
but I've never considered them as being the right connector for the
## You can stuff 5 kw easily through a good quality silver/teflon PL-259
5 kw is only 10A of RF. It's also 500 vrms/707 v peak..but only into a 1:1
## sure amphenol makes a good connector..but only if u get their teflon silver
and NOT their nickel plate junk.
## peter mentions female SO-239's on stuff like drake eq, lk-500's etc. That
white stuff u see on drake
connector's is NOT teflon, nor are they silver plated.
## all the telco's and cell co's have now converted from type N to 7-16
Din. Good riddance to type N.
If you want to see something silly.... check out 1.25" heliax.. with a type N
connector on it. Complete with
that stupid bnc sized pin. Here u have a connector the size of a coffee
mug...with this stupid bnc pin !
## as I mentioned b4.... on LMR-1200DB, 7/8" heliax..and 1.25" heliax......
you can only get 2 x connectors these days,
type N and 7-16 DIN. Andrew, etc, stopped making UHF connectors for 7/8"
heliax back in the mid 90's.
## I use silver/teflon pl-259/SO-239 in the shack only. All the hb amps have
7-16 dins on em. After that, everything downstream
uses 7-16 din, including LP filters, remote coax switch's, lightning arrestors,
## and don't forget to use dow corning dc-4/5 on all the connectors, including
threads, pins, and center females. The 7-16 is clearly
the connector of choice for the bigger coax cables [ it's ur only real
choice]. For the smaller cables, like 213-U, and LMR-400, the
UHF QUALITY silver/teflon connectors are plenty good enough. Type N for any
size cable is a pita. Odd ball connectors like C...and also
LC connector's are going out of vogue.
Later... Jim VE7RF
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