Na prevádzku v móde B (Uplink 432,125 – 175 MHz CW/LSB) postačuje nízkovýkonový vysielač alebo transvertor (approx. 1 – 5W). As antennas, circularly polarized antennas are particularly suitable, but this is not a requirement. The signal itself should be strong enough not to overload the transponder. You can tell by the signal distortion on the downlink.
Na Downlink (145, 975 – 925 MHz CW/USB – pozor na inverziu signálov) je potrebné mať ziskovú smerovú anténu (cca. 10 dB). Veľmi výrazne pomôže Predzosilňovač, because without it the signals are only S1-5, which results in many stations adding power to 70cm.
That AO-7 is in B mode can be recognized by the beacon signal at 145.972 MHz. If it is not there, the transponder is in mode A or is disabled.