S-Band is heavily utilized by LEO satellites as well as more distant objects such as the LRO.

One excellent place to start is:

https://uhf-satcom.com/satellite-reception/s-band

... and as for specific objects and frequencies that I have personally received, there are very strong signals from the following:

2232245000 - Tiangong-2

2245680000 - numerous CartoSat satellites

2242500000 - numerous known & unknown satellites, a popular TT&C downlink

... TLEs for the first two are available and the signals are extremely strong. Activity on 2242.5 is hit & miss - some sats don't transmit on S-Band 24x7, so it's just a frequency that you can monitor for random activity if nothing else is around.

Hope that helps!

-Scott, K4KDR

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On Mon, Jun 3, 2019 at 12:38 PM Richard Ferryman via AMSAT-BB < amsat-bb@amsat.org> wrote:

Does anyone know if there are any satellites using 13cm for downlink, probably for telemetry. I have an uplink system for QO-100 but am curious to see how it would work on some potential downlink.

Richard(Dick) G4BBH