Motorola GP-338 Frequency (MHz) : 29-42 / 35-50 / 136-174 / 330-400 / 403-470 / 450-527. Motorola GP-338 Channel Capacity: 128 Channels. Motorola GP-338 Power Supply: Provided through rechargeable battery - 7.5V. Motorola GP-338 DIMENSIONS: H x W x D. Motorola GP-338 With Standard High Capacity NiMH Battery: 137mm x 57.5mm x 37.5mm. Motorola GP-338 With Ultra High Capacity NiMH Battery: 137mm x 57.5mm x 40.0mm. Motorola GP-338 With NiCD Battery: 137mm x 57.5mm x 40.0mm. Motorola GP-338 With LiIon Battery: 137mm x 57.5mm x 33.0mm. Motorola GP-338 With Standard High Capacity NiMH Battery: 428 gm. Motorola GP-338 With Ultra High Capacity NiMH Battery: 508 gm. Motorola GP-338 With NiCD Battery: 458 gm. Motorola GP-338 With LiIon Battery: 358 gm. Motorola GP-338 AVERAGE BATTERY LIFE @ 5/5/90 CYCLE Low Power High Power. Motorola GP-338 With Standard High Capacity NiMH Battery: 11 hours 8 hours. Motorola GP-338 With Ultra High Capacity NiMH Battery: 14 hours 11 hours. Motorola GP-338 With NiCD Battery: 12 hours 9 hours. Motorola GP-338 With LiIon Battery: 11 hours 8 hours.