[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Re: New to Birds



It`s even possible to get more bang (signal) for the buck,
for yes,even LESS money.....

WWW.LOOPYAGI.DA.RU

Take a look at expedition lx.
Peter PA5BOX explane`s how to try this for vertualy nothing!

Chris PA5RWE
----- Original Message -----
From: "Reicher, James" <JReicher@hrblock.com>
To: "'Stan'" <stan@capecod.com>; "'Brad Rich'" <n6gr@san.rr.com>
Cc: "'AMSAT-BB'" <amsat-bb@AMSAT.Org>
Sent: Wednesday, August 21, 2002 4:22 PM
Subject: RE: [amsat-bb] New to Birds


> BTW, total cost for both 2 meter and 70 cm crossed yagis is going to be
> somewhere around $35, not including the aluminum for the parasitic
elements.
>
> -----Original Message-----
> From: Reicher, James
> Sent: Wednesday, August 21, 2002 9:20 AM
> To: 'Stan'; Brad Rich
> Cc: AMSAT-BB
> Subject: RE: [amsat-bb] New to Birds
>
>
> Stan, that's one approach I've taken but now I'm in the middle of building
a
> pair of crossed yagis using K5OE's design as a basis.
>
> My parasitic elements are made from some aluminum tubing I had laying
around
> the house.  I'm using 1 1/2" PVC for 2 meters (yes, it's overkill) and 1"
> for 70cm.  I decided to use copper tubing for the driven elements with
> compression fittings for connection to the boom.  I'm soldering the RG62
to
> the little inserts that goes into the tubing which makes it slighly less
> complicated to change the polarization than a screw or bolt into the
> coupling.  I'll post the results once I have the whole thing built.
>
> -----Original Message-----
> From: Stan [mailto:stan@capecod.com]
> Sent: Wednesday, August 21, 2002 8:23 AM
> To: Brad Rich
> Cc: AMSAT-BB
> Subject: Re: [amsat-bb] New to Birds
>
>
> Hello Brad,
>
> A cost effective approach is to use a 2M/70cm dualband mobile FM rig
>  that will do full duplex, with a dual band 2M/70cm whip antenna on
>  the car rooftop. Performance will be better when the satellite is
>  NOT overhead. The vertical antenna has more gain at the horizon.
>
> You can get your feet wet and determine if LEO operating is your cup
>  of tea. Headphones would be best to minimize the feedback between
>  the speaker and the microphone. My older Yaesu FT-5200 2 band mobile
>  was good for this mobile LEO approach.
>
> The eggbeaters can be a good antenna system stopping point, but not
>  cost effective if you are going to soon upgrade the antenna system
>  with cross polarized yagis.
>
> The egg beaters do not need to be rotated, are circularly polarized
> up to mid elevation angles and have essentially LOW gain.
> Additional accessories like the reflector kits increase the cost.
>
> Include a low noise mast mounted preamplifier for the 70 cm
> downlink, in either case
>
> The ultimate LEO solution includes:
> mast mounted low noise preamplifiers
> up to 22 elements cross polarized with polarization selection on 2M
> 38 to 40 el 70cm cross pol with polarization selection
> M2 or Yaesu AZ/EL antenna positioners (rotators)
> ROHN tower to get you above the trees or other local obscurations
> Yaesu FT-847 satellite rig
> A QTH that will allow horizon to horizon visibility for AOS to LOS
> operation
> Automated antenna tracking with UNITRAC, a PC, and INSTATRACK
> low loss coaxial cable runs.
>
> Stan, WA1ECF  Cape Cod, MA   FN41sr
>
>
>
>
> Brad Rich wrote:
> >
> > I am planning to start simple with M2 eggbeater antennas for 2 meters
and
> > 440Mhz.  What should my expectations be?  I know that I will be limited
to
> > Low Orbit birds.  Just want to make sure there is fun to be had without
> > going to the beams/dishes and alt/az systems.
> >
> > Brad Rich
> > N6GR@san.rr.com
> >
> > ----
> > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org



AMSAT Top AMSAT Home