The Hytera PD365 operates across UHF: 430-470 MHz. UHF passes between walls and obstructions more readily, which is why it is preferred inside buildings, industrial plants and dense urban areas.

RF output power is UHF HP: 3 W; UHF LP: 1.5 W. More power is not automatically better: it extends range and shortens battery life at the same time. Teams working close to a repeater are usually served by the low setting, which also lengthens the shift.

Capacity is 256 channels across 16 zones. A zone is a page of grouped channels — separate zones are defined for different sites, different shifts or joint working with another organisation. On a multi-site system that grows, this is what lets the channel plan be extended without a rebuild.

Battery 2000 mAh (Li-ion), with a manufacturer-quoted life of Analogue: ~11 hours, digital: ~15 hours. That figure is measured against the 5/5/90 duty cycle: 5% of the time transmitting, 5% receiving, 90% standby. High power, analogue mode and cold weather all shorten it.

Receiver sensitivity is 0.18 μV / BER 5%. Sensitivity states how weak a signal the radio can still decode, and a lower number is better. At the edge of coverage it determines range as much as transmit power does — communication usually fails not because the other party cannot hear, but because the radio cannot decode a weak signal.

Operating temperature range is -30°C ~ +60°C.