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Recently the RDXC committee reclassified P3F to high power from low power without publicly providing strong evidence that any infraction had occurred. They concluded was that the contestant was running HP on 80/40m but not full-time, just 10 minutes here and there without any convincing evidence. It appears they used the RBN as their source of information. Should the RXDC contest have to publicly provide convincing evidence before reclassifying a station from LP to HP?

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What coax connectors do you generally use for outside antenna connections?
  Posted: Jun 29, 2001   (493 votes, 12 comments) by G4BUO

Survey Results
PL259 81% (401)
N-type 16% (78)
Other 3% (14)

Survey Comments
No problem what type - just use only high quality ones. For instance in Frieadrichshaven this year I have found only ONE (!!!)seller with usable PL connectors (at 5.5 DM each).

I have burned dozens of both. On PL usually the female is a problem - bad plastic and often not tight enough. The male should be teflon. The N is too tiny for HF and what you get from better impedance holding is negligible up to 144 MHz.


Posted by OK1RI on July 10, 2001

N connectors
If you use the correct kind of N male connector, like an Amphenol 82-3312, you won't have a problem. Those have captivated center pins, held in place with two teflon spacers. N connectors commonly available from surplus that have the center pin simply floating on the center conductor will pull apart. It is physically impossible for a captivated male connector to pull apart!

Posted by Anonymous on July 9, 2001

Why do I use UHF (PL259) connectors? Because it takes about 30 seconds to strip the coax and solder a uhf plug. But it only takes 90 seconds for a N-connector I hear you say?! Oh well, just bone-lazy I suppose!! :-)

Dan Bartlett Strays Master

Posted by vk4tdb on July 9, 2001

IMO, N connectors are much easier to assemble *incorrectly*. The common occurrence of their center pins not staying where they belong is hard (impossible) to inspect/detect.

UHFs are robust and there are only two parts. The fact that one literally screws the UHF over the cable's jacket makes for an excellent mechanical (even weight-bearing) connection as well.
Just keep the water out!

Posted by N2MG on July 7, 2001

Depends on application
It depends on what I'm trying to do. For station interconnects, it's almost all SMA for low-power. They're becoming really cheap, RG142 cables have em pre-installed in neatly bundled lengths. . nice for connections to preamps, beverage switching, VHF+ transverters. Where power is involved, either UHF for below 30MHz, or N (sometimes 7/16 DIN) for 50MHz and up. Again, it's based on surplus availablility. Many 1/2" Superflex jumpers now have 1-N(Male) and 1-7/16 DIN. Easiest to get the Female sockets & use them!

I use 1/4" Andrew Heliax or 1/2" Superflex to the antennas from the main feedline. Almost all use N-Connectors.


Posted by K2AXX on July 5, 2001

Don't use N's on vert runs
KN8Z used N connectors everywhere. The first winter in Ohio after he installed his HF stacks all of his antennas went dead. The vertical runs of RG-213 and RG-11 that were terminated in N's contracted in the cold and the pins of the N's disengaged.

We replaced them all with UHF connectors in
the cold on the tower. Not fun.

N's are fine for hardline, but never again on outdoor sections of RG-213.

Posted by n9rv on July 3, 2001

PL259 v N Type
No matter how good quality your PL259 is (and usually only the pressure sleeve type are any use), it's only as good as the next stage in the line, and that is usually a poor fitting and poor surfaced SO239 socket. Ditch them all and use pressure sleeved N Types. They interlock better, are less lossy, and are much closer to the normal required 50ohm.
John - MM0CCC.

Posted by Anonymous on July 3, 2001

Forgot PL's forever
If you really want to be a little bit technically serious, forgot PL forever. Especially cheapest types of PL's with plastic isolator and bad galvanization.
If you are legal power station, N will be the best solution. Almost the same price, equal good quality from different producer and you can find it for all types of cables RG213/214, 1/2" , 7/8" etc.
I have PL's only on my TRCV's.

Ranko YT6A

Posted by yt6a on July 2, 2001

PL? N?
I use neither type.. my outside antenna is a doublet, fed with open wire... no plugs neede ;)

Posted by DJ1YFK on July 1, 2001

I have probably 200 UHF connectors outdoors, and about 100 N connectors outdoors. At 144 MHz and up, it's all N connectors; below that it's all UHF connectors. Properly installed and applied, either type is fine. For joining Andrew Heliax segments to make long cables (mine are all over 300 feet), I use back-to-back EIA flanges because they're much stronger than back-to-back N connectors and Andrew L45Z splices are basically nonexistent on the surplus market--EIA flanges are readily available.

Posted by k2ua on June 30, 2001

I use PL's below 30Mhz and N's above.

Posted by N0RKX on June 29, 2001

This connector is very good for UHF-frequencies because it has not so much less.And sooner than this type of HF-connnector is waterresistant.
"55+vy73" de Jens, DG1AAE!!!

Posted by Anonymous on June 29, 2001

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