Harris uses BNCs at this power level (3CX-1500A7) in RF-353 (AM-7224)
amplifier. They were used under harsh conditions for decades.
73,
Martin, OK1RR
Dne 08. 12. 18 v 3:07 Tim Duffy napsal(a):
When you look at an N connector, specifically the center pin - remember that
the N connector center pin is the same as the center pin of a BNC connector.
W6NL asked me this question - would you run 1500 watts with BNC connectors?
73
Tim K3LR
(Only 7-16 DIN and TONS of "quality" UHF connectors at this station
TIGHT PL-259s work GREAT - tighten up)
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Mike
Waters
Sent: Friday, December 07, 2018 8:57 PM
To: Frank Donovan; topband; Steve Maki
Subject: Re: Topband: Rather use N-type (was Re: The answer to PL-259
Thank you, Frank and Steve! I just learned something useful. :-)
I bought these N plugs in the early 1980s from Nemal Electronics. Perhaps
what you are describing was not available then? (That's a rhetorical
question. ;-)
If I ever get back on VHF/UHF, I'll get those.
73, Mike
www.w0btu.com
On Fri, Dec 7, 2018 at 7:26 PM <donovanf@starpower.net> wrote:
Hi Mike,
Captivated pin N connectors for hardline coax fits tightly over
the center conductor.
Captivated pin N connectors for flexible coax typically has a
pin that requires solder.
Floating pin N connectors belong in the trash bin.
73
Frank
W3LPL
------------------------------
*From: *"Mike Waters" <mikewate@gmail.com>
*To: *lists@oakcom.org
*Cc: *"topband" <topband@contesting.com>
*Sent: *Saturday, December 8, 2018 12:10:38 AM
*Subject: *Re: Topband: Rather use N-type (was Re: The answer to PL-259
The one I have in my hand has a solder hole in it. I take it that there
are
newer ones that have contacts that grip the coax center conductor?
73, Mike
www.w0btu.com
On Fri, Dec 7, 2018 at 6:04 PM Steve Maki <lists@oakcom.org> wrote:
Well here's the advantage of captivated center pins: the pin is NOT
bonded to the center conductor. IOW, if the coax center conductor
shrinks a bit, it can slide in the center pin and the pin stays put.
And that's exactly what you want it to do - especially with an N
connector.
-Steve K8LX
On 12/07/18 14:25 PM, Mike Waters wrote:
Exactly my experience, even with captivated pins!! And my coax runs
were
only about 100' long.
The captivating washers were made of TeflonR, *and Teflon cold flows*.
This
was when I lived in Toledo, Ohio when the temperature dropped well
below
zero.
Four photos of those N connectors are at
http://www.w0btu.com/files/misc/N_plugs . See the last two.
On Fri, Dec 7, 2018, 1:02 PM Richard (Rick) Karlquist <
richard@karlquist.com>
wrote:
My two 500 foot RG-216 military surplus cables both eventually
exhibited
retracted pins on the type N connectors at both ends. I replaced
them
with
PL-259's. ... Success anecdotes about install once and never touch
again
commercial sites are probably not relevant to ham applications.
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