Date: Fri, 7 Dec 2018 15:05:28 -0500 (EST) From: donov...@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