[VHFcontesting] rover tech - coax

Steve Meuse smeuse at mara.org
Wed Jul 11 12:26:07 EDT 2007


Paul Kiesel expunged (k7cw at yahoo.com):

> I have a question. Why use inflexible coax at all for
> a rover installation when you can use RG-213 for
> virtually all bands. The losses associated with RG-213
> will be small with short runs as on a rover.


Why? 40+% more efficiency?

Freq loss cable   (based on 20' runs)
---------------
432  .9  RG-213
     .6  LMR-400-UF
     .5  LMR-400
902
    1.5
     .9  LMR-400-UF
     .8  LMR-400
1296
    1.7  RG-213
    1.1  LMR-400-UF
     .9  LMR-400

Rovers typically use lower-gain antennas, so the extra .5 can make a difference. Personally, I use LMR-400UF in my rover config. 

-Steve
N1JFU




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