I checked active status online for the following satellites but on trying to receive them, got nothing: KKS-1, TIGRISAT, FALCONSAT3, DELPHI C3, EO-88, DUCHIFAT1, and ISS (both 433.550 and 145.800).

One other point about FalconSat-3, is that you probably did hear it (435.103 MHz) - but since it's 9600 packet, it sounds just like noise! I essentially just trust my S-meter to tell me when I'm receiving it (that and my TNC starts spitting out coherent gibberish - and occasionally an APRS packet).

--Roy K3RLD