Date: Fri, 7 Dec 2018 15:05:28 -0500 (EST)
From: donovanf@starpower.net
To: topband@contesting.com
Subject: Re: Topband: Rather use N-type (was Re: The answer to PL-259
soldering/reliability problems)
<On the other hand, the much bulkier 7-16 DIN connectors offer
<similar high performance and they're widely available at much
<more affordable prices. For example, do this Google search
<73
<Frank
<W3LPL
## If you want to see something real silly, look at heliax, like
.875 inch, or larger, with a type N connector installed. Here
you have this large diameter heliax.... with a massive type N connector,
complete with the puny, BNC sized center pin. At the telco I worked at
for 34 years, all our cell sites eventually changed out to the more robust
7-16 DIN. Its 7mm, and 16mm, NOT 7/16 inch .
## On a side note they also make a bigger DIN, called a 13-30, which is
over the top.
## On .875 and bigger heliax, and stuff like LMR-1200DB, the only available
connectors are Type N and 7-16 DIN. No brainer here folks. Hardly any
difference
in price between the 2 connectors on the larger cables. The center pin on any
7-16 DIN
is huge..and the V stand off is superb on a 7-16 DIN.. like 2900 V rms...add
41 % for peak value.
The beauty of the 7-16 DIN is.. the female chassis connector is only 1.25
inch square..... vs the 1 inch square of either
a Type N or a SO-239.
## The 7-16 din is similar to a Type N in that the shield path is on an inner
collet..and not the outer threads... they are
2 different items. But both are zero ohms between them. You can also
apply 5 X more tightening Torque on a 7-16 Din,
vs Type N. You wont blow up a 7-16 din anytime soon. I use the dins on
LMR-1200DB, and also LMR-600, 600UF,
and also RG-393.
Jim VE7RF
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
|