[NLRS] Need some info on N connectors

[David Palm]

I just received a bunch of N connectors and they are a bit different than
what I've seen before.  They are not screw-on and they don't seem
crimpable.  The ridged cylinder is made of brass, so I assume the braid
gets soldered to it.  I've included links to two rather blurry pictures,
but hopefully someone has seen this before and can give me general
instructions on how they're installed:

https://drive.google.com/file/d/0B876FHb0XKiGZmxuX3RJa1FXNGM/view?usp=sharing

https://drive.google.com/file/d/0B876FHb0XKiGZm1sOW96ekJxSW8/view?usp=sharing

Thanks and 73,

David  W9HQ