[TowerTalk] N connector, Re: UHF (PL259) soldered center

[Steve Maki]

I use nothing but JMA's because my main customer specifies them. 4.3-10 
JMA's for 1/2" corrugated, 1/2" Superflex, 7/8" corrugated, and 1-5/8" 
corrugated are widely available, but unfortunately JMA connectors 
require an expensive installation tool.

That said, JMA's have a couple of saving graces:

1) One model works on any brand of cable (of similar construction) by 
virtue of their unique design.
2) And they are the strongest, best connector (again because of the 
unique design)

I'm sure Commscope, Rosenberger, Eupen, etc will have decent stock in 
the near future.

-Steve K8LX

On 07/06/18 19:03 PM, john at kk9a.com wrote:

> Thanks for the info Steve, your knowledge of commercial systems is very
> valuable to us on towertalk. 7-16 DIN connectors are indeed very robust. I
> have a few on my 10m system however they are larger than the N and UHF
> connectors that most hams use. So, for the fun of it I purchased an Amphenol
> 4.3-10 jack. It is a very nice looking connector, similar to an N on
> steroids, that would be an easy swap with existing N/UHF jacks. The only
> issue may be with finding 4.3-10 plugs. The Commscope and Amphenol stock is
> very low for LDF4 cable and I found nothing reasonably priced for RG series
> coax.
> 
> John KK9A
> 
> To:	towertalk <towertalk at contesting.com>
> Subject:	Re: [TowerTalk] N connector, Re: UHF (PL259) soldered center
> From:	Steve Maki <lists at oakcom.org>
> Date:	Wed, 27 Jun 2018 19:46:25 -0400
> 
> I haven't looked, but I'm guessing that neither of the *mini* DIN series
> have much to choose from as far as connectors for 3/8" braided coax (RG213,
> LMR400, etc). They were developed to be the next generation connector for
> the Remote Radio Head to Antenna jumper interface, which is 1/2" corrugated
> hardline 99% of the time. The availability scenario will improve as time
> goes on, but I'd bet on the 4.3-10 to be the survivor.
> 
> Whereas 7-16 DIN has gained enough market share to be available for almost
> all cables, and will be for the foreseeable future.
> 
> The 4.1-9.5 has been around for 15 years at least, and is the one properly
> called mini-DIN. The 4.3-10 is much more recent, and was developed
> specifically with ultra low PIM in mind, plus high density jack fields. The
> 4.3-10 is what all new cell equipment is and will be using, especially as we
> move into 5G.
> 
> Either series though is a big upgrade to the N in mechanical robustness.
> 
> -Steve K8LX