Topband: coax change?

[Guy Olinger, K2AV]

> I need to put up an antenna at a 2nd QTH which will need at least
> 150' of coax.

> The question I am asking here is if using a lower loss coax like the
> 400 or 500 would allow a significant difference that I would notice
> with my K3? I will be using higher bands during the summer. Getting
> more 213 would be the cheapest answer and I don't want to waste money
> if the benefits would not be noticeable.

You need to run the numbers for the highest band you expect to be using. You 
talking about using 20m or 10m?

It's hard to make a case for LMR 500 on 160m at amateur power levels.

73, Guy.