walkie-talkie GP3688 interphone

walkie-talkie GP3688 interphoneDetailed Product Description:General Standard VHF UHF Frequency 136-162, 146-174403-440, 438-470Signal channel quantity 16 signal channelPower 7.5 V ±20%Size (excluding belt clamp and antenna) Nickel-cadmium / high volume lithium battery Standarded nickel-hydrogen battery Super-thin lithium battery 126.5mm (H) X 61.5mm (W) X 45mm (D)126.5mm (H) X 61.5mm (W) X 43mm (D)126.5mm (H) X 61.5mm (W) X 42mm (D)Weight: High volume nickel-cadmium battery High volume lithium battery Standarded nickel-hydrogen battery Super-thin lithium 428 g376 g437 g375 gAverage lifetime of battery @ 5-5-90 working circle High volume lithium battery Super-thin lithium battery Standarded nickel-hydrogen battery Nickel-cadmium High power (4W)14hours12hours10hours8hoursLow power (1W)19hours17hours13hours10hoursSeal up Under the Military Standard 810-CDE and F; pass the IP 54 rain checkShock and vibration press prevention of crust is under the Military Standard 810-CD E and F and TIA/EIA 603Dust prevention and humidity press prevention of crust is under the Military Standard 810-CD E and F and TIA/EIA 603Receiving machine + VHF12.5kHZ VHF20/25kHZUHF12.5kHzVHF20/25kHzFrequency 136-162, 146-174403-440, 438-470Signal channel interval 0.25µVFrequency stability (-30 +60) -65dB -70dB-60dB -70dBMess and harmonic wave -70dBAudio frequency response From 6dB/OCT. Premphasis, 300 to 3000Hz .0.00025%Mess control -75dBInterfere and noise -50dB@25kHzImage 1/2 1-F control -70dBAudio frequency output @<5% 500mWTransmitter VHFUHFFrequency 136-162, 146-174403-438, 438-470Signal channel interval 12.5/20/25kHzFrequency stability (-30 +60) 0.00025%Mess and harmonic wave -36dBm < 1GHz-30dBm > 1 GHzAudio frequency response From 6dB/oct. Premphasis, 300 to 3000Hz +1, -3dBAudio frequency distortion @ 1000Hz, maximum of 60% deviation <3%FM noise -40dB(12.5kHz)-45dB(25kHz).FCC modulation 20/25 kHz 16K0F3E and 11 K0F3E..Photo details: Moto GP3688 radio BatteryMotorola radio GP3688 transceiver.