[30m] Antenna solution for net control

[Karl F. Larsen]

    Hi Jason, there is no antenna or power level that will cover the 
entire country. Things will change with the time of day too. So I think 
we need to figure out how to cover the country with several net 
controls. Also what mode are you going to use for the net? I  think 2 or 
3 net controls  and use the county hunter  net control method. I have it 
if you want it.

    I have a local CW net that meets on 7142 MHz at 3pm local time and 
it has worked out well over about 500 miles QRP. But it looks like it's 
about time to move back to 4 pm local.



Jason Hsu, AA0II wrote:

>I currently use a Screwdriver antenna as a backyard vertical.  I
>currently use a 102-inch whip for the upper part of the antenna.
>
>A 1/4 wavelength vertical radiates mainly at low angles, so I'd be able
>to communicate with the coasts (East, West, Gulf), but communicating
>with hams in Chicago, Minneapolis, St. Louis, etc. would be a problem.
>As a net control, I'd like to find a way to shrink the skip zone.  (Of
>course, I'll probably need relays for a few check-ins.)  A low dipole
>would allow communication with the Midwestern hams but at the expense of
>the long-distance capability.
>
>I've thought of two solutions, and I'd like your feedback.  The
>solutions:
>1.  Use a low dipole in parallel with the vertical.  If the feedpoint
>impedance is too low, I can use a 2:1 balun.
>2.  Use a taller upper whip with the vertical.  (In this case, I'd use a
>vertical wire supported with one of those 20+ foot tall fiberglass
>masts, such as a Jackite.)  I can operate on the third harmonic instead
>of the first and get an upper lobe as well as a lower lobe.
>
>What do you think?
>
>Jason Hsu, AA0II
>Cedar Rapids, IA
>
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-- 
Karl Larsen, aka K5DI
Linux user since 1994  
70 years old and still having fun
Web: http://www.zianet.com/k5di