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Motorola GP-328 portable radio


X-PANDTM Audio Technology
Motorola’s special voice compression and expansion technology called X-PANDTM enables crisper, clearer and stronger audio quality, allowing you to keep communicating in any noisy environment.
16 Channels
Maximum of 16 channels to organise work groups with ease and efficiency.
LED Battery Gauge
Tri-colour LED to indicate battery strength, avoiding failed communication with early warning on low battery strength.
Emergency Siren
Easy-to-access, one-touch button with piercing alarm to seek help in critical situation.
Switchable RF Power Level
Optimize coverage and conserve battery consumption.
Field Retrofit Option Boards
Easy to install, affordable addon functionality whenever your needs arise. Option Boards are available for:
I) Voice Storage for recording and playing back voice messages.
II) Mandown Alert for triggering an emergency procedure when the radio is horizontal or still for a predefined time. Ideal for radio users who work alone or in isolated environments
Repeater/Talkaround Enable/Disable
Freedom to communicate via a repeater for wide area coverage; or bypass a repeater and talk directly to another unit for easy local unit-to-unit communications.

Frequency range
136-174MHz; 330-400 MHz

403-470MHz; 450-527 MHz
Number of Channels and Groups 16
Power Supply Voltage 7,5V
Channel Spacing 12.5/20/25 kHz
Battery Life(5-5-90 duty) Low power 11hour/High power 8hour
IP rating
Shock and Vibration: Protection provided via
impact resistant housing exceeding: MIL-STD 810 C / D / E ба TIA/EIA 603
Dust and Humidity: Protection provided via
environment resistant housing exceeding: MIL-STD 810 C / D / E ба TIA/EIA 603
Operating Temperature Range -30 to +60 degC
Frequency Stability ± 2.5ppm ± 2ppm
RF Input-Output Impedance 50 Ω
Dimension (H x W x D) 137mm x 57.5mm x 37.5mm
Weight (Approx.) 420g
Sensitivity (12dBSINAD) 0.25 uV
Adjacent Channel Selectivity 60dB @ 12.5kHz 70dB @ 25kHz
Hum and Noise 45dB @ 12.5kHz 50dB @ 12.5kHz
Intermodulation 70dB
Spurious and Image Rejection 70 dB
Audio Output 500 mW
Output Power 5W/4W
Modulation 12.5 kHz 11K0F3E / 25 kHz 16K0F3E
Conducted Spurious Emissions -36dBm < 1GHz / -30dBm > 1GHz
FM Hum and Noise -40dB
Audio Distortion 3%