How much power could it hold at HF and also uhf/vhf
frequencies? Assuming a modern day high quality N connector??

The other thing i pondered is that it seems the don't make
Pl259/so239 connectors for hardline, so what do guys use typically for
higher power DIN?

Good to Gigs at 5kw. I recall a test of Pl259/SO239 connection vs. N found
the PL259/SO239 to fail from overheating due to the internal mismatch with
as little as 500 watts at UHF frequencies.

I don't recall the Maximum at HF, but High SWR is a consideration. Best to
use open wire feeders in that case.

N is a 50 ohm connector, but the PL259/2O239 is a stepped transistion and
isn't even specified for impedance.

JB wrote:
How much power could it hold at HF and also uhf/vhf
frequencies? Assuming a modern day high quality N connector??

The other thing i pondered is that it seems the don't make
Pl259/so239 connectors for hardline, so what do guys use typically for
higher power DIN?

Good to Gigs at 5kw. I recall a test of Pl259/SO239 connection vs. N found
the PL259/SO239 to fail from overheating due to the internal mismatch with
as little as 500 watts at UHF frequencies.

I don't recall the Maximum at HF, but High SWR is a consideration. Best to
use open wire feeders in that case.

N is a 50 ohm connector, but the PL259/2O239 is a stepped transistion and
isn't even specified for impedance.



JB sez "N is a 50 ohm connector, but the PL259/2O239 is a stepped
transistion and isn't even specified for impedance."

Actually, think you will find that N connectors, as well as BNC
connectors come in Several Impedences! (Not one size fits all).

Had surplus ones with center pins fit 90 ohm, and 75 ohm (no go on 50
ohm coax)! Be sure to check connector specs! Jim NN7K

JB sez "N is a 50 ohm connector, but the PL259/2O239 is a stepped
transistion and isn't even specified for impedance."

Actually, think you will find that N connectors, as well as BNC
connectors come in Several Impedences! (Not one size fits all).

Had surplus ones with center pins fit 90 ohm, and 75 ohm (no go on 50
ohm coax)! Be sure to check connector specs! Jim NN7K

Excellent point! You usually need to get specific connectors for specific
cable. Trying to get what you ordered is often the reason for surplus (or
failure). There are so many ways to goof up a communication system these
days. Come to think of it, there is far more to be considered for people to
be able to see eye to eye.

For instance, there has always been a conflict over how much supervision
should be required for the "man in the field".

In article ,
"JB" wrote:

JB sez "N is a 50 ohm connector, but the PL259/2O239 is a stepped
transistion and isn't even specified for impedance."

Actually, think you will find that N connectors, as well as BNC
connectors come in Several Impedences! (Not one size fits all).

Had surplus ones with center pins fit 90 ohm, and 75 ohm (no go on 50
ohm coax)! Be sure to check connector specs! Jim NN7K

Excellent point! You usually need to get specific connectors for specific
cable. Trying to get what you ordered is often the reason for surplus (or
failure). There are so many ways to goof up a communication system these
days. Come to think of it, there is far more to be considered for people to
be able to see eye to eye.

For instance, there has always been a conflict over how much supervision
should be required for the "man in the field".

thats interesting, thanks to everyone that responded to the
oirginal ontopic post

Glad to know I wasn't the only one having issues finding certain
values for those connectors .

i started to read pl259 folklore and heard that it was desiged
specifically to handle the higher power(HF) and while a quick look
at it does reveil a thicker connector, i sorta guess that all
it's other issues might not make it the best choise for even hf
and wanted to bounce it off you guys so thanks

my second choice was going to be continuing use of N connectors
but wanted to make sure it wasn't going to have a problem say at
full legal power on HF

I have a few DIN connectors but they are rather expensive even
surplus and ultimately requring me to use a jumper since non of
my gear actually has that


all my coax runs use N except 1 run in which i have times
microwave lmr 400 with their captivated Pl259 I have swept the coax
at time of install and every now and then afterwards it still shows
what it should and same as day 1 but it was for an experiment
not sure i'd want to use the pl259's long term

again thanks for all

"ml" wrote in message
...
hi

Just wondering a few things

I see the center pin on a typical N connector is pretty small

How much power could it hold at HF and also uhf/vhf
frequencies? Assuming a modern day high quality N connector??

snip

The Bird 43 Wattmeter has Type N connectors on it. The Bird web site says,
"Accurate CW field power measurement over 450 kHz to 2.7 GHz and 100 mW to
10 KW."

That's good enough for me to say "10 KW."