[TowerTalk] Best Place to Buy Low-Loss Coax

[Steve]

I've used many 1000's of feet of the Shireen 400 - it's always worked 
perfectly with both EZ-400 and PPC Comp-400 compression connectors. Very 
tight fit on the center conductor.

Has held up very well in the sunlight. Have been extremely happy with it.

-Steve K8LX

On 10/30/2020 2:16 PM, NN4TT Dave Clausen wrote:
> A few years ago, I was working in a shop where we used Times LMR 400 coax
> and Times EZ 400 NMH-X connectors which is a captivated pin / crimp ring N
> male connector. Somehow, we got a roll of that Shireen LMR clone cable
> instead of Times. Looked OK but as soon as I stripped it with the Times
> tool and inserted it into the Times captivated connector, it was apparent
> that the center conductor was ever so slightly smaller diameter than OEM
> Times. Slid very easy in and out of the pin. Times fits very tight in the
> connector (as it should). A sweep with an Anritsu SiteMaster showed bad bad
> performance with that mixed connection as in high insertion loss and a
> higher than normal SWR, especially above 700 MHz. HF sweep was less
> pronounced but still there. The Times OEM cable / connector sweep was / is
> much better.
> 
> I have no real thought about the Shireen cable as I refused to use it since
> I only had access to the captivated pin connectors.  I would suggest using
> a crimp or solder pin connector (N or PL259) with that cable if you use it
> instead of a Times captivated connector. That loose connection could create
> problems with PIM especially if you run high power or if you are combining
> multiple bands through filters onto that one cable.
> 
>   FWIW, I have had great success with the Times LMR and crimp connectors for
> years in basic commercial and amateur applications but in high RF
> environments, I always used a rigid coax such as Heliax or RFS Cablewave
> for trunkline and RG 142 or RG 303 for flexible interconnect jumpers such
> as receiver multi-couplers, transmit duplexers and combiners and
> wattmeters.
> 
> 73
> Dave
> NN4TT
> 
> Sent from my not-so-new OnePlus 6T on T-Mobile.
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