Topband: Re: Mobile Antenna bandwidth

Bill Turner w7ti at ispwest.com
Mon May 12 08:00:33 EDT 2003


On Sun, 11 May 2003 08:15:55 -0400, you wrote:

>If I have a fixed antenna design and add the same effective inductance with
>two different loading coils, one coil with considerable shunting capacitance
>and the other without, it is quite possible to have LESS bandwidth with the
>LOWER Q inductor! It works this way on paper, on models, and in the real
>world. Of course if the antenna system changes, the effects are much more
>profound.

_________________________________________________________

I presume you're talking about a condition where there is so much
shunting capacitance that the self-resonant frequency is approaching
the actual operating frequency.  I've never operated mobile with such
a coil but I can see where that could be the case.  Thanks for the
info.

-- 
Bill, W7TI



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