[amsat-bb] Re: eggbeater rx performance (Mobile Operation)

Gary "Joe" Mayfield gary_mayfield at hotmail.com
Sat May 30 07:02:44 PDT 2009

I have operated while driving.  I found a trunk mounted 2 meter half wave
(dual bander) to work well when the satellite was behind me, but not at all
overhead or in front of the car (makes sense).  I currently have a 2 meter
quarter wave (dual bander) mounted by drilling into the center of the roof.
It works in all directions (again makes sense).

I have always operated full duplex, usually with a headset mic, but
sometimes without.  The following radios have worked for me.

Yaesu FT-4700 -- The first radio I did it with.
Icom IC-2340 -- Worked okay
Icom IC-2720 -- Worked great (One side hears better than the other) the
radio has "other" issues
Yaesu FT-8900 -- Works very well

Mode B is vastly superior to mode J for mobile operation.  AO-21 and SO-35
rocked beyond belief!

Joe kk0sd

-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of Mark Lunday
Sent: Friday, May 29, 2009 11:11 PM
To: eric.fort at gmail.com
Cc: 'Amsat BB'
Subject: [amsat-bb] Re: eggbeater rx performance

Good question.  With Arrow/Elk, it is directional.  Good gain but not omni.
With whip it is omni, but reduced gain.  


Don't know of anyone who operated while driving, so I cannot help you with
that one.  Maybe eggbeater is the way to go.



Mark Lunday


 <mailto:wd4elg at arrl.net> wd4elg at arrl.net

 <http://wd4elg.net> http://wd4elg.net


From: Eric Fort [mailto:eric.fort at gmail.com] 
Sent: Friday, May 29, 2009 11:18 PM
To: Mark Lunday
Cc: Amsat BB
Subject: Re: [amsat-bb] eggbeater rx performance


I have an arrow.  It's just sorta difficult to point when in motion.  Is the
pattern from a standard mobile whip really enough considering polorization
and radiation angle or would something else be more effective?  I'm looking
to move from working portable to truly mobile.


On Fri, May 29, 2009 at 7:46 PM, Mark Lunday <mlunday at nc.rr.com> wrote:


Couple of thoughts for you:

No need for QRO, in my opinion.  You can solve it all with a good antenna

Regarding antennas...nothing against eggbeaters, but you can accomplish
everything with a simple antenna setup, including mobile:  Look for Elk
antennas and Arrow antennas, hand held and directional.  Lots of great
success w/o anything other than 5 watts and one of those antennas.  Ask
WD9EWK and N3TL, who have proven this over and over.

Mark Lunday
wd4elg at arrl.net


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