Rob:
A typical 3/8 wl inverted-L antenna is about 65 feet
vertical and 125 feet horizontal or sloping back downwards at a slight
angle. This means that 2/3 of the wire is horizontal near the ground
and is a high angle radiator - semi NVIS - and the vertical part is
radiating at a low angle. Not good unless you want to work a
lot of US and nearby VE stations.
It would be best if you can
model the various configurations of 1/4 wl, 5/16 wl and 3/8 wl inverted-L
antennas on a PC so you can see the results on the monitor and print them
out for evaluation.
IMHO going beyond 160 feet of wire
inverted-L (5/16 wl on 160 meters) is not the best solution.
Just my
2 cents worth
73 & GL
George K8GG
> Thanks, gentlemen (Eddy, K8GG, ZR,
Roy, Herb, et. al.), for all the
> feedback on this. So, it seems
it's pretty much what I expected --
> if you tune an antenna for
better results on one frequency, you
> detract from its operation
on another. Maybe one of these days I'll
> get around to playing
around with that 3/8 wavelength L anyway...
>
> Rob /
KD8WK
>
> On Mon, May 07, 2012 at 03:22:19PM -0400, Herb
Schoenbohm wrote:
>> Another rule for this is "the lower
the Q of the matching network the
>> greater the
bandwidth."
>>
>> Herb Schoenbohm, KV4FZ
>>
>> On 5/7/2012 1:48 PM, Roy wrote:
>>
> If I were to extend my 1/4-wave inverted-L to a 3/8-wave L, and tune
>> > out the inductance with a fixed capacitor at the base,
what would this
>> > do to the broadbandedness of the
antenna?
>> >
>> > There is an old basic
principle to remember about this, "The fewer the
>> >
components in general, the broader the bandwidth."
>>
>
>> > 73, Roy K6XK
>
>
_______________________________________________
> UR RST IS ...
... ..9 QSB QSB - hw? BK
>
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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