[TowerTalk] N connector, Re: UHF (PL259) soldered center

[Jim W7RY]

Along with QN and QMA for interior/indoor connections within equipment 
cabinets.



Thanks
73
Jim W7RY


-----Original Message----- 
From: Michael Clarson
Sent: Tuesday, June 26, 2018 9:31 AM
To: Jim Thomson
Cc: TowerTalk at contesting.com
Subject: Re: [TowerTalk] N connector, Re: UHF (PL259) soldered center

Jim: The wireless industry is starting to use another connector -- the
4.3/10 DIN. Much more robust than the Type N, but unlike the 7/16 DIN, it
is sized for greater connector density for feed-lines typically used by
hams. Great. Now I have to get even more interseries adapters! --Mike,
WV2ZOW

https://www.amphenolrf.com/connectors/4-3-10.html

On Tue, Jun 26, 2018 at 10:18 AM Jim Thomson <jim.thom at telus.net> wrote:

> Date: Mon, 25 Jun 2018 22:35:21 -0700
> From: Avery Davis <wb4rtp at mindspring.com>
> To: "Charlie at thegallos.com" <charlie at thegallos.com>
> Cc: towertalk at contesting.com
> Subject: [TowerTalk] N connector, Re:  UHF (PL259) soldered center
> with braid crimp or, crimp-crimp, supply?
>
> <Charlie,
> <Would you please share a link to a source that discusses the limits of N
> <connectors?? Everything I have seen so far suggests they have as good or
> <better power handling at low frequencies than the PL-259, and are much
> <better at UHF as they are constant impedance (lower loss, higher power,
> <lower SWR).? For example, Amphenol rates their SO-239 at 500 V, while
> <their Type N is rated at 1500 Volts.? That sounds like better power
> <handling, to me.? The current rating wasn't listed, but I would think
> <that they would be about the same as the wire gauge in the coax cable
> <center conductor, since both connectors have center contact outer
> <diameter about the same as RG-8 or RG-213 coax, especially if skin-depth
> <effects are taken into account.?
> <I would appreciate a link to a better source of information on this.
> <73,
> <Avery, WB4RTP
>
> ##  Forget what amphenol  states.  A  teflon PL-259  will hi pot test a
> heck of a lot higher
> than a  Type N.   Type N uses a puny center pin, identical to a BNC. The
> center pin
> on any PL-259 is huge by comparison.  There is no RF on the center pin any
> way. The
> RF travels down the outside of the mating female of the   SO-239.   You
> can stuff  10+ kw
> through a  quality  teflon silver, correctly installed   PL-259 +  SO-239
> pair.   Avoid high swr, which can
> easily be fixed, right at the feed point.   10 kw = 707 volts RMS... =
> 1000 volts peak.   10 kw =  14 A RMS.
> 5kw =  10A  RMS  and  500 Vrms.... =  707 Volts peak..which is dick.   You
> wont blow anything up  with 1.5 kw.
>
> ##     The next step above the silver teflon  PL-259 and  SO-239 setup is
> the teflon silver 7-16 DIN connector.
> The 7-16 is the real deal.  Nobody uses  Type N anymore, the telcos all
> dumped the type N  years ago..and swapped
> to 7-16 din.   What really looks silly is  huge heliax,  like .875 and
> bigger variety... with a type N connector installed,
> complete with the puny BNC sized center pin.
>
> Jim   VE7RF
>
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