[Moon-net] LMR 400UF

[Bob Baker]

Dear Moon-net,

I am again in need of your wise, collective advice.

I just had a failure of a piece of LMR400 UF coax. It was only about 2 years
old. It is clearly blown, SWR terrible, and you can see a small piece of the
white dielectric sticking  through the black outer insulator.

I have a 2 yagi system, the other coax and antenna are working fine. Same
coax, same age. swr perfect, looks almost new.

At the time of failure I was running 1500W jt65 144mhz. Measured at the
antenna, the swr was about 1.3 to 1.4. The most power I could have had in
the failed coax was 700W and it is rated at 1500W for 150MHZ. But my SWR was
not perfect in the antenna with the failed coax.

Obviously I need to buy more coax. Has anyone had similar problems with LMR
400 UF? Was the cable defective or did I just push it a little too hard? Any
recommendations? LMR 600UF?

Thanks in advance,

73,

Bob
KD3UY