Hi all,
I can confirm Martin's and Greg's experiences. It is strongly recommended to
avoid
using the PLs at all. I did the same changes and since that no problems at all.
Of course any adapters are avoided too. All cables must be properly assembled
with proper
and high quality N-connectors. Never use/buy the connectors without assembly
instructions
including the cutting lengths layout.
The only issue to think about it carefully is the power rating of N-connectors
(even PTFE).
These connectors are not designed and dedicated for high power and as the inner
pin is
a bit tiny I do not recommending to use them over "legal limit"...
I tested the PTFE version of N-connectors at 4kW in the lab and there was no
problem but
it was in comfortable conditions... low humidity, well mounted, no soft iron
soldering etc.
The conditions outside the shack can be a different situation...
In general - using the N-connectors with high quality cables properly mounted
up to "KPA500"
is highly recommended. The higher power level is deserving the 7/16 DIN usage
or similar.
(all is talking about "professional" approach to our ham radio hobby)
Hope it helps,
73 - Petr, OK1RP
On Thu, Dec 6, 2018, at 7:49 AM, Martin Kratoska wrote:
> Did he same. Since this change no problem anymore. Confirming what Greg
> says and can only recommend - throw away all PLs and go to N!
>
> 73,
> Martin, OK1RR
>
> Dne 06. 12. 18 v 5:00 Greg-zl3ix napsal(a):
> >
> >
> > 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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