HHR transmits and receives signal of frequency ranging around 400 Mhz. It supports microphone and speaker to speak and listen to audio signals respectively. LCD is present to display any text required and keypad for entering characters as per requirement. The GNSS antenna is present to detect latitude and longitude of the location. ADSP-BF538 and Audio processing section. The Audio processing section is designed around AMBE 4020 Vocoder and TLV320AIC3120 Codec along with required audio processing elements and interfaces.
Key Features
- Frequency Range of Operation : 400 MHz
- Maximum Power Output at Antenna Port : 20 dBm
- Output Power Level Flatness : ≤1 dB
- Noise Figure : ≤4 dB
- Audio Interface :
◦ Headset with PTT, Microphone and speaker
◦ Digital vocoder type : AMBE4020 - Data Interface : USB, RS232
- Positioning System : GPS
- Power : 14W with 12V DC
- Battery : Li-Ion 3200mAH
- Weight : < 530gms
