Mark:
If you have 300 ft cable lenght in mind, LMR 400 will put in you antenna
73.089 W putting 100 from your radio.( 1.361 Dbs loss @14Mhz)
i think the best is to have at most 1 Db loss in the feed line
check this page and have your own idea what is best.
http://www.ocarc.ca/coax.htm
if you can get 7/8 or 3/4 inch 75ohms cable for free (but GOOD or new not
yunk old cable) adjust to 50ohms at 20m
Here other option
http://fermi.la.asu.edu/w9cf/tran/
i will recomend the low loss cable you can buy
On 05 Oct 2005 12:06 PDT you wrote:
> Hello Everyone,
>
> Im putting up a 20 meter monoband beam and was planning to feed it with
> LMR400. Recently a friend said he had some 75ohm hardline that I could use as
> well. Which would I be better using as far as lower loss is concerned? Its
> about a 250-300ft run btw. What do you guys think? Thanks and 73
>
> Mark
> W0NCL
> _______________________________________________
>
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>
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_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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