Robert11 wrote:
It appears that when factoring in the PE requirement, and certainly price, I
can do better, apparently, by picking a 75 ohm coax than a 50 ohm one.

I use a lot of 75 ohm coax that I get for free from scrap
ends from the local cable TV company. Can't beat that price.
--
73, Cecil http://www.qsl.net/w5dxp

If you MUST use coax then prefer 75 ohms. Go for the greatest overall
75-ohm coaxial diameters. The greater the overall diameter the smaller
the attenuation in terms of dB per 100 feet.

There's no need to impedance match a 75ohm line to a 50-ohm receiver
for receiving purposes. The mismatch loss is quite small.

What matters is a severe mismatch between the antenna impedance and
the line impedance which will occur on some of the higher frequency
bands.
----
Reg.