Physical Specifications
The LHR-80 features a 128x128 pixel bit-mapped LCD display with a backlight, providing clear visibility in various lighting conditions.

GPS Performance
The device is equipped with a 12-channel GPS receiver. It has an acquisition time of approximately 3 seconds for a hot start and 40 seconds for a cold start, with a reacquisition time of 1 second. The update rate is 1 per second, with an accuracy of 5 meters and sensitivity of -158 dBm. The operating frequency is 1575.42MHz, and it supports NMEA output formats including RMC, GGA, GLL, GNS, and GSV.

Communication
The LHR-80 has a channel spacing of 25kHz and operates within a frequency range of 156.025 to 157.425 MHz for transmission and 156.025 to 163.275 MHz for reception. The receiver sensitivity is 12dB SINAD ≤0.25 µV, with a squelch sensitivity threshold of 12dBµV (EMF). It offers adjacent channel selection of 70dB and spurious response rejection of 68dB. The audio power output is 250 mW at 5% THD, with a maximum of 400 mW. The transmitter power output is selectable between 1 or 5 watts, using FM modulation. Hum and noise attenuation is 40 dB, with audio distortion at 5%. Adjacent channel power is greater than 70 dB, and spurious/harmonic emissions are less than 70 dBc. The current drain is 1.75A for high transmission and 0.8A for low transmission.

Power
The device has a battery lifetime of 10.5 hours under GPS function, with a battery capacity of 7.4V, 1400 mAh Li-Polymer.