Re: OT: Balanced Feedlines
Posted by
Geoffrey Mackenzie-Kennedy on
Jul 17, 2009; 8:19am
URL: http://elecraft.85.s1.nabble.com/OT-Balanced-Feedlines-tp3273430p3274174.html
Joe,
Forgetting about RF performance for a moment, wouldn't the weight of RG-8/
RG-213 create a problem unless the antenna is supported at its feedpoint ?
If it is not supported, Don could end up with an inverted inverted V, aka a
"Droopy Dipole".
BTW I do not use the plastic window/ ladder line stuff here because we get a
lot of rain and use 4 wire open wire line for long runs, which is a hassle
to build but which has very low loss at HF and VHF wet or dry.
73,
Geoff
GM4ESD
Joe Planisky wrote on Friday, July 17, 2009 2:20 AM
>I know it doesn't answer the question you asked, but RG-8/RG-213 has a
> loss of about 0.85 dB/100 ft at 20m. Your 3:1 SWR will add a little
> less than 0.4 dB additional loss for a total loss of 1.25 dB. Is the
> added hassle of running balanced line worth the extra 1.1 dB? Are
> there other reasons you want to use balanced line?
>
> 73
> --
> Joe KB8AP
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