Motorola HT750 Service Manual - Page 80

Transmitter, Specification, Lowband, Receiver

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8-14 Model Chart and Test Specifications Specification Power Output NiMH @ 7.5V: Spurs/Harmonics: Audio Response: (from 6 dB/oct. Pre-Emphasis, 300 to 3000Hz) Audio Distortion: @ 1000 Hz, 60% Rated Max. Dev. Modulation Limiting: Conducted/Radiated Emissions: FM Hum and Noise: Transmitter Lowband 1-6 W VHF 1-5 W -36 dBm < 1GHz -30 dBm > 1 GHz +1 to -3 dB UHF 1-4 W ±5.0 kHz @ 20 kHz 3% Typical ±2.5 kHz @ 12.5 kHz ±4.0 kHz @ 20 kHz ±5.0 kHz @ 25 kHz 66 dBw -40 dB Specification Sensitivity (12 dB SINAD) EIA: Sensitivity (20 dB SINAD) ETS: Intermodulation per EIA: Adjacent Channel Selectivity ETS: Spurious Rejection: Rated Audio: Audio Distortion @ Rated Audio: Hum and Noise (with LLE enabled): Receiver Lowband VHF UHF 0.30 µV Typical 0.35 µV Typical 0.5 µV Typical -65 dB 60 dB @ 12.5 kHz 70 dB @ 25 kHz 70 dB 0.5 W 3% Typical -45 dB @ 20/ -45 dB @ 12.5 kHz/-50 dB @ 25 25 kHz kHz Audio Response (0.3 - 3 kHz): +1 to -3 dB Conducted Spurious Emission per FCC Part 15: -57 dBm 1 Ghz Specifications subject to change without notice. All electrical specifications and methods refer to EIA/TIA 603 standards. Professional Series radios meet or exceed requirements of MIL STD 810 C, D, E.

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8-14
Model Chart and Test Specifications
Transmitter
Specification
Lowband
VHF
UHF
Power Output NiMH @ 7.5V:
1-6 W
1-5 W
1-4 W
Spurs/Harmonics:
-36 dBm < 1GHz
-30 dBm > 1 GHz
Audio Response:
(from 6 dB/oct. Pre-Emphasis, 300 to
3000Hz)
+1 to -3 dB
Audio Distortion:
@ 1000 Hz, 60%
Rated Max. Dev.
3% Typical
Modulation Limiting:
±5.0 kHz @ 20
kHz
±2.5 kHz @ 12.5 kHz
±4.0 kHz @ 20 kHz
±5.0 kHz @ 25 kHz
Conducted/Radiated Emissions:
66 dBw
FM Hum and Noise:
-40 dB
Receiver
Specification
Lowband
VHF
UHF
Sensitivity (12 dB SINAD) EIA:
0.30
µ
V Typi-
cal
0.35
µ
V Typical
Sensitivity (20 dB SINAD) ETS:
0.5
µ
V Typical
Intermodulation per EIA:
-65 dB
Adjacent Channel Selectivity ETS:
60 dB @ 12.5 kHz
70 dB @ 25 kHz
Spurious Rejection:
70 dB
Rated Audio:
0.5 W
Audio Distortion @ Rated Audio:
3% Typical
Hum and Noise (with LLE enabled):
-45 dB @ 20/
25 kHz
-45 dB @ 12.5 kHz/-50 dB @ 25
kHz
Audio Response (0.3 - 3 kHz):
+1 to -3 dB
Conducted Spurious Emission per FCC
Part 15:
-57 dBm <1 Ghz
-47 dBm >1 Ghz
Specifications subject to change without notice. All electrical specifications and methods refer to EIA/TIA 603 standards.
Professional Series radios meet or exceed requirements of MIL STD 810 C, D, E.