[amsat-bb] AO-7 Mode A

[Joe]

I just played with it some when the Mode "A" was predictable a few 
months ago. And from what I remember in like 1976 it seemed a LOT 
stronger back then. Nothing special a 10 meter dipole and Drake TR-4 for 
the receiver back then.

Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 6/10/2017 6:02 PM, rsoifer1 at aol.com wrote:
> It's about an S-unit weaker.
>
> 73 Ray W2RS
>
> -----Original Message-----
> From: Joe <nss at mwt.net>
> Ts o: rsoifer1 <rsoifer1 at aol.com>; gzook <gzook at yahoo.com>; amsat-bb 
> <amsat-bb at amsat.org>
> Sent: Sat, Jun 10, 2017 1:09 pm
> Subject: Re: [amsat-bb] AO-7 Mode A
>
> How does it compare now to back then signal strength wise?
> Joe WB9SBD
>
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
> On 6/10/2017 3:04 PM, rsoifer1--- via AMSAT-BB wrote:
>
>     Hi Glen,
>
>
>     I remember working you with that set-up.
>
>
>     73 Ray W2RS
>
>
>
>     -----Original Message-----
>     From: Glen Zook<gzook at yahoo.com> <mailto:gzook at yahoo.com>
>     To: rsoifer1<rsoifer1 at aol.com> <mailto:rsoifer1 at aol.com>; amsat-bb<amsat-bb at amsat.org> <mailto:amsat-bb at amsat.org>
>     Sent: Sat, Jun 10, 2017 12:41 pm
>     Subject: Re: [amsat-bb] AO-7 Mode A
>
>
>
>     In the "goode olde dayes", when AO-7 was new (and also Oscar VI), I used to use a 2-element 10-meter beam mounted below a 7-element 2-meter Yagi elevated about 45-degrees.  Later, added a 70 cm beam with the 2-meter beam on an az-el mount with a TV rotor for the elevation.
>
>       
>     Glen, K9STH
>     Amsat 239 / LM 463
>     Website:http://k9sth.net
>
>
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>       From: rsoifer1--- via AMSAT-BB<amsat-bb at amsat.org> <mailto:amsat-bb at amsat.org>
>       To:amsat-bb at amsat.org <mailto:amsat-bb at amsat.org>  
>       Sent: Saturday, June 10, 2017 2:22 PM
>       Subject: [amsat-bb] AO-7 Mode A
>        
>       
>
>
>     Mode A has always been weaker than Mode B, but with a decent 10-meter antenna it is quite usable.  Many operators access Mode B with a 2-meter beam of some sort, then try to hear Mode A with a dipole or ground-mounted vertical , then complain that they cannot hear it.
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>     There is no substitute for a good 10-meter beam.  A tri-bander usually works too, but check the tuning to see that the SWR isn't too high at 29.5 MHz.  If it is, you may have to re-tune it or even shorten the elements slightly.  If you absolutely cannot put up a beam, your second choice can be a 10-meter ground plane, elevated so it is mounted in the clear.  It has no forward gain of course, but it will give you a low radiation angle, which will help in hearing AO-7 when it is at low elevation which it is most of the time.
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>     With Field Day coming up, a little attention now to your 10-meter antenna will show up in your results later.
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