I made up a couple cables about 2 feet long with RG-316. One has an SMA on
one end and a BNC on the other end. Another has SMA's on both ends. Greatly
reduced chance of damaging the SMA on the NanoVNA with those cables.
73, Zack W9SZ
On Mon, Oct 5, 2020 at 12:33 PM <david.hostetler@...> wrote:
Having a really hard time imagining how you would "provisionally" attach
the nanoVNA to the coax. I highly recommend getting an adapter or pig tail.
I have purchased adapters and jumper cables from Amazon and it has been
about 50/50 hit or miss on quality and being able to do the job. BNC
connectors are particularly bad where I have had them not really mate well
because of machining burrs and most don't connect the outer shield properly
because the inside bore of the female is too large and/or the fingers on
the male have no springiness and fail to contact the inner bore on the
female - the shield/ground reins top only connecting through the bayonet
pins, maybe OK for video, but not so much for RF.
I have had good luck with R and L Electronics in Ohio, where a UHF female
to SMA male adapter is $3.95.
Also, if you test with the PL259 installed, you confirm the integrity of
your soldering work and you are equipped to re-check the antenna at any
time you have doubts or concerns.
Finally - If you have fun on CB, be sure to look into getting a ham
licence, Technician isn't too hard and your options are much wider.
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