Full specs Digital Wireless Intercom System - Base station

 - Antenna impedance: 50Ω
 - Frequency range: 1895.15 ~ 1905.95MHz
 - Number of frequencies: 37 waves (control carrier 2 waves. communication carrier 35 waves)
 - Separation: 300kHz
 - Oscillation system: Quartz control frequency synthesizer system
 - Frequency stability: Within ±3×10-6
 - Modulation accuracy: 12.5% or less
Transmission
 - Antenna power 10mW
 - Intensity of spurious radiation 2.5μW or less (beyond band) 250nW or less (within band)
 - Modulation system π/4 shift QPSK
 - Audio frequency 3.4kHz or less
 - Neighboring channel leak power: 600kHz mistuned 800nW or less. 900kHz mistuned 250nW or less
 - Occupied frequency band area: Within 288 kHz
Reception
 - Reception system Double superhetrodyne
- Reception sensitivity 16 dBμV or less (bit error rate 1×10-2)
- Spurious sensitivity 47 dB or more
- Neighboring channel selectivity 50 dB or more (600 kHz detuning)
- Body radiation 4nW or less
Common
 - Line frequency characteristic 3.4kHz or less
 - Line input/output 0dBm balanced
 - Microphone input -60dBm balanced
 - Speaker output Inside 1W Outside 2W at 8Ω
 - External input 0dBm balanced