Owen Duffy wrote:
LMR400: 300' at 14.2MHz with VSWR=1.5, loss~=1.5dB

Open-wire line: 300' at 14.2MHz with VSWR=1.5, loss~=0.225dB
Costs about 16 cents/ft if one rolls one's own.
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73, Cecil http://www.qsl.net/w5dxp