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@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@contesting.com>
Subject: Re: [TowerTalk] N connector, Re: UHF (PL259) soldered center
From: Steve Maki <lists@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
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