10.2.4-3 Area Coverage

Modulation and a radio frequency should be chosen, as FCC regulations permit, to provide broad-area walkie-talkie communication to the control room.

Additional Information:
One consideration for frequency selection should be radio-wave penetration of metal or reinforced concrete barriers, which at certain frequencies, would tend to attenuate or bounce the signal. Use of walkie-talkies should be prohibited in areas close to low-level analog or digital equipment, unless EMI noise susceptibility tests have been conducted that demonstrate that the equipment is not affected by the frequency bands used.