[TowerTalk] Re # Coax Connectors

[Jim Brown]

On 10/30/2018 9:38 AM, WK1W-Ivan Shapiro wrote:
> Many PL259s have not been problematic for me. Good I/O
> I recommend W6LGs youtube video:
> 	https://www.youtube.com/watch?v=5AgFum5K7bw

I don't have time to watch the video, but I've done my own measurements 
and found that loss is negligible to at least 200 MHz -- IF you're using 
good connectors. I measured 1400 ft of Commscope similar to (but better 
than) LMR400 in 100 ft lengths that I had made up for a DXpedition. I 
had installed soldered Amphenol 83-1SP connectors and spliced them for 
the measurement with Amphenol barrels. Using an HP generator and HP 
spectrum analyzer, the loss I measured up to 200 MHz was less than the 
spec for the coax itself.

My definition of a good connector is one that either says Amphenol or 
has a MIL part number stamped into it. If I lived on another continent, 
I might include other manufacturers.

73, Jim K9YC