You could be running way too much power if

You need a UHF connector specified for RG-58. If you don't have the correct crimper, you need the old style PL-259 and the appropriate adapter bushing, OR you need some sort of solderless screw together connector. THAT IS WHERE things get muddy, because some of those are VERY poor quality.

This is one type that does not require a special shield crimper:

http://www.amphenolrf.com/downloads/dl/file/id/19

Amphenol 83-58FCP

https://www.google.com/search?num=2...j1.3.0....0...1c.1.64.serp..0.0.0.ZP-wcslS90E

I don't know if RF parts has a min order.....

83-58FCP-RFX UHF Push On Connector, Cable Types: RG58, LMR195,Cable Group: C, Amphenol/RF