[NLRS] Antenna recommendations for Rovers

[Donn Baker - WA2VOI/0]

Hi Joe,
Jon, W0ZQ, covered most of it in his reply.  Loop yagi's at 432 below generally are not built because of the wind load 
problem you mention.  That was "discoved" 20+ years ago.  At 33cm (900MHz) and up, they're the cat's meow.

You don't mention what bands you're thinking of a "multi-band" dish for, so specific comments are tough.  Multi-band 
dishes are ALWAYS a compromise, but may be worth it.  Optimize the feed for the highest frequency, and take what you can 
get on the lower ones.  Also, dishes have to be large in terms of wavelength to provide more gain that a yagi (or loop 
yagi).  Ex: a 3' dish at 900 will provide ~15 dB gain... but so will a good loop yagi, which is MUCH easier to handle 
and can be mounted on the top of the rover.  A dish generally cannot.  (Even an 18" dish for 10GHz (a DSS dish) is a LOT 
of wind load at 60 mph !)

73 Donn
WA2VOI/0 ex-/R

Microwave Update '08
October 17-18, 2008
www.microwaveupdate.org

PS
What's your call, Joe ?  I've sorry to have to admit I don't recognize the name.

----- Original Message ----- 
From: "Joe Serocki" <joeserocki at gmail.com>
To: <nlrs at mailman.qth.net>
Sent: Monday, July 28, 2008 3:23 PM
Subject: [NLRS] Antenna recommendations for Rovers


>
>
> I am looking for recommendations for antennas for Rovers. I like the stuff
> from Bill Olsen for the lower bands, but he does not do 33cm and
>
> 23cm, and I am in need. I am not sure about loop yagis, do they handle the
> wind load of roving OK? I have heard rumors both ways.
>
>
>
> I might consider building a multi-band dish, that would be pretty cool,
> wonder if anyone has any experience there.???
>
>
>
> Thanks in advance for any help.
>
>
>
> Joe Serocki
>
>
>
> Commander Peter Quincy Taggart: Never give up, never surrender!
>
> Red Green: Quando omni flunkus moritati - when all else fails, play dead.
>
> Riley Hollingsworth: If you don't like it spin the dial!
>
>
>
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