You got to understand somthing....
LEO (Low Earth Orbiting) birds are passing by pretty fast so QSO's (Conversation) are brief 10 to 20 min Tops before you start too loose you signal unless it is GEO Stationary( Geosynchronous Earth Orbiting) IE: Direct TV, GOES or Echo Star. The SATS are further out and rotate with the Earth in a fixed position. Thus easier to listen too.
Millitary Sats are encrypted...even if its a standard telemetry. Very seldom if at all are you going to hear any audio as a Voice.
Mainley alot of chirps and Warbels, and a lot of other data chirps that are beyond me....Also they have a downlink in the Hi GHz range, way beyond most scanners.
I like Weather SATs... there is a lot of them and the telemetry can be decifered by simple programs off the net with the help of a radio modem to patch it thru to your PC. Most of new ones are in the Lo GHz downlink range depending on what SAT you work. But alot of the older ones have a VHF, UHF and HF down link.
Most of the commercial sats are scrambled...ABC, CBS, NBC, DirectTV and a Hodge podge of other sats can be cracked but Im not going to get into that...
The Coolest thing I heard and done was to talk to the International Space Station.
Ive Heard few OSCARS and GOES SATs go by with an automated voice ID'er.
But most of the AmSats acted like a, well, with a lack of a better descrption, A really big repeater tower. it was fun to work Voice, PSK and Packet on the OSCAR SATs. Ive talked and all over the World. But working SATs by voice reminded me of working an HF pile up. I needed alot of power to get my signal out.
The newest sat that up is Oscar AO-51 (PACB-11 Callsign) It does voice, digital and PSK.
The link on that bird is:
http://www.amsat.org/amsat-new/echo/
So if you want to listen to the birds and a few HAMs talk then go to this site and learn about them.
http://www.amsat.org/amsat-new/index.php
Give it a try, see what you can hear. But I remind you, The antenna makes the radio! So read up on different types of antennas you can use with your radio. I would sugest a small UHF or VHF beam. That way you can follow the SAT as it passes by. Rotors and there controlers an get expencive.
JD