[amsat-bb] Re: AO-7 Mode A Antenna?

w7lrd@comcast.net w7lrd at comcast.net
Sun Dec 7 19:37:59 PST 2008

Hello Sebastian- Back in the days of the RS satellites I used a horizontal one wave length loop.  I even hung a reflector 6 feet underneath it and I had a two element quad looking up.  I tried dipoles, random wires.  Currently I use my HF four element quad, BUT it receives better off the back at 29.45Mhz.  The antenna is designed for about 28.4 and at 29.45 the reflector acts like a director.  This same thing might be true with yagi type HF beams.  A quarter wave ground plane would work good a low elevations.  Good luck with your efforts, I'll look for you on AO-7.
73 Bob W7LRD

"if this were easy, everyone would be doing it"

-------------- Original message -------------- 
From: Sebastian <w4as at bellsouth.net> 

> I have a Yaesu FT-847 which is dedicated for satellite work, so I 
> don't have any HF antennas connected to it. 
> I'd like to know from those on the group who are (were) using AO-7 
> Mode A (10 meter receive), what type of antenna you are using? 
> I really don't want to get a directional antenna for several reasons. 
> Also, is it possible to receive Mode A without the use of an external 
> preamp? 
> 73 de W4AS 
> Sebastian 
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