[CQ-Contest] 4-square dump power into horizontal dipole

Michael Tope W4EF at dellroy.com
Thu Apr 30 09:49:19 PDT 2009

RDStraw wrote:

>>I also have <1% dumped power at optimum on my 4-sqr, so it seems that it
>really wouldn't add much high-angle fill-in?
>You might be very surprised to see what 15 W (1% of 1500 W) can do into a
>good horizontal dipole. It certainly makes local stations aware that you're
>on frequency when they otherwise might not hear you well on the low-angle
>Four Square, which has a deep null in the vertical-elevation pattern
>directly overhead.
>73, Dean, N6BV
>Dean Straw, N6BV
>n6bv at arrl.net

I believe the hybrid would be reciprocal on receive (correct me if I am 
wrong on this) in which case you could listen to the close-in stations 
to get an idea of how much fill was provided by the high dipole. Also, 
with a relay or two you could easily configure a switch that would 
select between 4-square w/dummy load dump termination, 4-square with 
high dipole dump termination, and high dipole direct. That would be neat 
to play with.

BTW, I enjoyed your presentation, Dean. I always come away with good 
food for thought after hearing one of your talks.

73, Mike W4EF...................

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