Hytera MD78X, Service Manual

Page: 227 / 519

UHF3 (350
–
400 MHz)
Specifications and Blind Spot
9
Modulation Limit

±2.5 kHz@12.5 kHz

±4.0 kHz@20 kHz

±5.0 kHz@25 kHz
FM Hum and Noise

40dB@12.5kHz

43 dB@20 kHz

45 dB@25 kHz
Adjacent Channel Power

60 dB@12.5 kHz

70 dB@20/25 kHz
Audio Response
+1 dB to -3 dB
Audio Distortion
≤3
%
Digital Vocoder Type
AMBE++ or SELP
Digital Protocol
ETSI-TS102 361-1, -2, -3
Receiver
Sensitivity
Analog:

0.3
μ
V (12 dB SINAD)

0.22
μ
V (Typical) (12 dB SINAD)

0.4
μ
V (20 dB SINAD)
Digital:

0.3
μV /BER5%
Adjacent Channel Selectivity

TIA-603: 65 dB@12.5 kHz/75 dB@20/25 kHz

ETSI: 60 dB@12.5 kHz/75 dB@20/25 kHz
Intermodulation

TIA-603: 75 dB@12.5/20/25 kHz

ETSI: 70 dB@12.5/20/25 kHz
Spurious Response Rejection

TIA-603: 75 dB@12.5/20/25 kHz

ETSI: 70 dB@12.5/20/25 kHz
Blocking

TIA-603: 90 dB

ETSI: 84 dB
Hum and Noise

40 dB@12.5 kHz