[TowerTalk] Force12

[Mike Gilmer - N2MG]

IMO, it's reasonable to specify the overall "system" 
SWR.  And since the cable, after all, cannot be zero 
length, they have to pick something. A length of 100 
feet seems completely realistic.

Many folks have no idea that SWR as seen at the TX 
goes down as your cable losses (length) goes up.  Many 
more believe that SWR is the holy grail of antenna 
performance.  Are they all being hoodwinked in this 
case? I don't think so.  (I'd vote "yes" if there were a 50-ohm resistor at the antenna's feedpoint!)

Mike N2MG

On Thu, 04 October 2001, n4kg@juno.com wrote:

> 
> 
> So how much coax would you suggest they use 
> to specify the SWR at the transmitter?
> 
> Don't tell me ZERO.  I don't know anyone who
> places their radio on top of their tower.
> 
> Tom  N4KG
> 
> On Thu, 04 Oct 2001 08:53:57 -0400 Mel Martin <mel@interlink.net> writes:
> > 
> > I don't... they deserve to be thoroughly scolded for this kind 
> > "slight
> > of hand" specification. Stick to the truth... we can handle it!!!
> > 
> > >I think F12 is being treated a little unfairly on this issue
> > 
> > >"My hunch is that when F12 first developed the C-3, the 15M SWR 
> > bandwidth
> > was a little tight to enable them to stay under 2:1 across this wide
> > band,
> > so they specced the antenna on 15 using 100 feet of coax to achieve 
> > that
> > magic number, which they thought was important for marketing 
> > purposes."
> > 
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> > systems,
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> > 
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