Thread: Small beam
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Old July 29th 03, 12:37 AM
Mark Keith
 
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"Tarmo Tammaru" wrote in message ...
A/B comparison between the dipole broadside to Europe, and TA33 with a
rotator. People who sell trapless beams make the same claim. Remember, this
is the JR, with small traps, too short a boom, and element lengths that have
been fudget to get a very nice 50 Ohm impedance with no matching network of
any kind. (Or there is enough resistance in the traps). Front to back and
front to side are also very poor.

I got comments from G and DL stations who all preferred the dipole.
Receiving, the difference in favor of the dipole was huge ( several S units)
on an HA.


Dang....Kind of depressing results...I would have thought the small
beam would still slightly win the race. I use a A4S here when I
actually use a beam. I got it free, so the price was right. It's
fairly decent actually, but I don't consider it a small beam. It's
full sized for all practical purposes. 18 ft boom, and a 32 ft
reflector. It has "nearly" full size performance on 20m. Also good on
10m with it's better spaced reflector than the smaller A3. The A3 is
not bad though. It's about a 27 ft reflector if I remember right. We
have compared the A4 to the A3 at field day. The A3 wasn't too bad
considering it's slightly smaller size. Both the A4 and the A3 use a
spacing design that gives a 50 ohm feedpoint. You only need a 1:1
balun or a choke. I use the coax choke.. MK