GENERAL Frequency range ....................................... 450~520MHz Number of channels .................................. Zone : Max. 128 per radio Ch/GID : Max. 250 per zone (Max. 512 [Conv. Ch’s + GID’s] total per radio) Channel spacing ........................................ Wide : 25kHz Narrow : 12.5kHz Operating voltage ...................................... 13.6V DC ±15% Current drain Standby.................................................. 0.4A Receive .................................................. 1.0A Transmit................................................. 9.0A Duty cycle ................................................. Transmit : 20% Operating temperature range.................... –22°F~+140°F (–30°C~+60°C) Frequency stability .................................... ±0.00025% (–22°F~+140°F) Antenna impedance .................................. 50Ω Channel frequency spread ........................ 70MHz Dimensions (W x H x D) ............................ 6-5/16 x 1-3/4 x 6-3/16 in. (160 x 45 x 157 mm) (Projections not included) Weight (net) .............................................. 3.31lbs. (1.5kg) RECEIVER (Measurements made per EIA/TIA-603) Sensitivity (12dB SINAD)........................... Wide : 0.25μV Narrow : 0.28μV Selectivity .................................................. Wide : 80dB Narrow : 67dB Intermodulation distortion ......................... W/N : 75dB (±50, 100kHz) Spurious response .................................... 85dB Audio output (4Ω impedance) ................... 4W with less than 5% distortion TRANSMITTER (Measurements made per EIA/TIA-603) RF power output ....................................... 30 to 1W (490~520MHz : 25 to 1W) Spurious response .................................... 70dB Type of emission ....................................... Wide : 16K0F3E Narrow : 11K0F3E FM hum & noise ....................................... Wide : 50dB Narrow : 45dB Audio distortion ......................................... W/N : 3% Microphone impedance ............................ 600Ω