On the thirtieth of July around 2:15 UT, AO-51 will be switched to FM mode. In the next three weeks, the control stations will monitor the resources and increase the power of the UHF B transmitter, which is about 1W. Its frequency is 435,300 MHz (Downlink) a keďže na predpokladanej frekvencii (435,225 MHz) je ešte stále aktívny aj satelit GO-32, bude sa zrejme dlhšiu dobu používať 435,300 MHz.
Uplink frekvencia je 145,920 FM s CTCSS 67 Hz. The transmitter is activated after receiving one second of signal on that frequency and remains activated for ten seconds after the session ends. Due to the fact that the satellite does not yet rotate quite stably, there are relatively significant signal leaks. The minimum is the small directional antennas of the earth station. Due to the fact that on the first day there will be interest in QSO cez AO-51 obrovský, počúvajte pozorne a umožnite spojenie aj iným.