David
I'm not sure that a stack of loops at 17"? on 432 takes up?a whole lot more
space than an egg beater is space is your limiting factor. The Par loops are
more easily side mounted on a tower than the others.
?
73 Paul AA4ZZ
-----Original Message-----
From: David <ke4yyd@gtcom.net>
To: vhf@w6yx.stanford.edu
Cc: VHF Contesting Reflector <vhfcontesting@contesting.com>
Sent: Fri, 27 Jun 2008 10:48 pm
Subject: Re: [VHF] Some 432MHz Questions
There are no radials under the Eggbeater. I will not be able to stack antennas
so my question deals with the efficiency of a single Eggbeater as compared to
other single antennas such as HO-Loop, Par or Wheels.?
?
Thanks for the replies.?
?
David?
?
----- Original Message ----- From: "Alfred Green" <nu8i@cox.net>?
To: <vhf@w6yx.stanford.edu>?
Cc: "VHF Contesting Reflector" <vhfcontesting@contesting.com>?
Sent: Friday, June 27, 2008 10:37 PM?
Subject: Re: [VHF] Some 432MHz Questions?
?
>>> I have a M2`Eggbeater antenna at about 50 ft on the side of my 70 ft?
>>> tower. It was put there several years ago for satellite work. Since I?
>>> no longer work satellites I want to optimize my 432 performance for?
>>> contesting. Are there other omni directional antennas that can be?
>>> side mounted that will work better for ground wave??
>>>?
>?
> The egg-beater, while a good satellite antenna, is not very good on the?
> horizon if you have the radials underneath it. Over 10 degrees it's?
> fine. Not so good for weak signal work.?
> Someone else just mentioned the big-wheel, I've built a few of those?
> over the years for various bands and they work fine. I've not tried?
> stacking them, but if you can work out the mechanics it should do well.?
> A simple approach is just a pair of crossed dipoles, with a 90 degree?
> phasing line between them. It gives circular polarization up into the?
> sky, but on the horizon it is fairly omni-directional and horizontal.?
> Probably the origin for the eggbeater design.?
> Of course, the good old Halo can work well, but is gain-challenged. Off?
> the side of a tower you could stack a bunch of them to compensate.?
>?
>>> What do most folks use for jumpers between the radio and amplifier at?
>>> 432? I find the 3 ft jumper of 9913 with N connectors to be too?
>>> stiff. Would RG-8 with N connectors be just as well in 3 ft length??
>?
> Piffle. 432 is almost DC anyway. For a 3ft length anything a bit better?
> than twin-lead will work just fine.?
>?
> GL & 73, Alf NU8I?
> Scottsdale AZ DM43an?
> 160m > 24Gigs?
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