I think the primary flaw of the PL-259/UHF connector is that shield
connectivity is strictly a function of thread tightness. There's no inner
sleeve to maintain good electrical contact of the shield with any loosening
of the connector plug. Otherwise, I have no issues with either connector up
through UHF.
When people speak of "impedance bumps" when discussing the PL-259/SO-239,
they're almost always parroting hearsay. When asked how it matters, why it
matters, and where exactly on the line it matters, few people can answer the
question.
Paul, W9AC
-----Original Message-----
From: Topband <topband-bounces@contesting.com> On Behalf Of Clive GM3POI
Sent: Thursday, December 6, 2018 10:43 AM
To: topband@contesting.com
Subject: Re: Topband: Rather use N-type (was Re: The answer to PL-259
soldering/reliability problems)
For anyone that doubts the loss of a good 259. Google K2RIW on the subject
who knows a thing or two about UHF and did some numbers on the subject.
I have used for a good long time the Silver plated Teflon with a gold pin
from the RF connection. I usually end up buying 50 at a time.
73 Clive GM3POI
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of N2TK,
Tony
Sent: 06 December 2018 15:31
To: 'GEORGE WALLNER'; topband@contesting.com
Subject: Re: Topband: Rather use N-type (was Re: The answer to PL-259
soldering/reliability problems)
I have been using PL-259 connectors forever. I have switched to crimp
connectors when I need to make up a new cable. No sense replacing the
soldered connectors if they are working fine. ThePL-259 is a low loss, easy
to assemble connector for up to at least 6M (nothing higher in frequency
here) that makes good contact and are easy to seal with rescue tape followed
by Scotch 33+. Some of my PL-259's have been in use outside for 40 years and
still look good and work well. I hope manufacturer's don't change.
73,
N2TK, Tony
-----Original Message-----
From: Topband <topband-bounces@contesting.com> On Behalf Of GEORGE WALLNER
Sent: Thursday, December 06, 2018 9:13 AM
To: topband@contesting.com
Subject: Re: Topband: Rather use N-type (was Re: The answer to PL-259
soldering/reliability problems)
Greg,
I completely agree. For all my outdoors applications I use N connectors.
Unfortunately, amateur radio gear (even seriously expensive gear) is still
built with SO-239 connectors which perpetuate the use PL-259 male
connectors. As a result, my station and my DXpedition gear contain both,
necessitating the use of adaptors. How do we convince manufacturers to
change?
73,
George
AA7JV/C6AGU
On Thu, 06 Dec 2018 17:00:53 +1300
Greg-zl3ix <zl3ix@inet.net.nz> wrote:
>
>
> I continue to be mystified by the fact that the amateur radio
> community insists on using PL259 connectors. N-type are much more
> reliable (used by professional communicators), low cost, can be
> crimped easily and quickly and have a well-defined impedance right up
> into GHz frequencies.
>
> Back in 2005 I started having contact problems with the connector on
> my SteppIR 3-element. There was a thin layer of oxide that built up
> around the centre pin of the PL259. I had had similar problems with
> other connectors around my shack. I decided to change my entire
> station, including the SteppIR, to N-type, and have never looked back.
>
>
> 73, Greg, ZL3IX
>
> On 06.12.2018 13:29, Steve Ireland wrote:
> G'day
>>
>> About five years I discovered this fool-proof and brilliant
> way to solder PL-259s invented by Bill Maxon N4AR who taught this to
> Tim K3LR. Tim uses this method throughout his contest station and did
> a great job of documenting it - see
> http://www.k3lr.com/engineering/pl259/
> [1] and it has totally changed my angry and worried attitude towards
> soldering PL-259s.
>>
>> The key component is Amphenol 83-1SP connectors.
> The connector body is silver and the shell is nickel and you can buy
> them from Mouser or DX Engineering.
>>
>> Vy 73
>>
>> Steve, VK6VZ
>>
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