GENERAL Frequency Range ............................................ TK-890 : 450 to 490MHz (K), 480 to 512MHz (K2), 403 to 430MHz (K3) TK-890H : 450 to 480MHz (K) Number of Channels ...................................... 160 channels Channel Spacing ............................................. 25kHz (Wide) / 12.5kHz (Narrow) Operating Voltage ........................................... TK-890 : 13.6V DC± 15%, TK-890H : 13.4V DC±15% negative ground Current Drain .................................................. 0.6A on standby 2.2A on receive TK-890 : 12A, TK-890H : 28A on transmit Duty Cycle ...................................................... Transmit 20% Frequency Stability ......................................... ±0.0002% (–30°C to +60°C) Operating Temperature Range ....................... –30°C to +60°C (–22°F to +140°F) Dimensions & Weight .................................... TK-890 : 7.01" (178mm) W x 2.36" (60mm) H x 7.68" (195mm) D, 5.06lbs (2.3kg) 7.01" (178mm) W x 2.36" (60mm) H x 8.98" (228mm) D, 5.72lbs (2.6kg) with KCH-10 TK-890H : 7.01" (178mm) W x 2.36" (60mm) H x 12.88" (327mm) D, 7.92lbs (3.6kg) RECEIVER (Measurements made per EIA standard EIA/TIA-240-D) Antenna Impedance ....................................... 50Ω Sensitivity ....................................................... 12dB SINAD : 0.25μV, 20dB Quieting : 0.35μV Selectivity ....................................................... 85dB (Wide) / 77dB (Narrow) Intermodulation .............................................. 80dB (Wide) / 75dB (Narrow) Spurious and Image Rejection ....................... 90dB Audio Output .................................................. 13W at 4Ω less than 5% distortion (12W at 4Ω less than 3% distortion) Frequency Stability ......................................... ±0.0002% from –30°C to +60°C Band Spread ................................................... 20MHz TRANSMITTER (Measurements made per EIA standard EIA-152-C) RF Power Output ............................................ TK-890 : 40W adjustable to 5W TK-890H : 100W (450 to 470MHz), 75W (470 to 480MHz) adjustable to 40W Antenna Impedance ....................................... 50Ω Spurious Response ........................................ 80dB Type of Emission ............................................ 16K0F3E (Wide) / 11K0F3E (Narrow) FM Hum and Noise ........................................ 50dB (Wide) / 44dB (Narrow) Microphone Impedance ................................. 600Ω Audio Distortion .............................................. Less than 2% at 1000Hz Band Spread ................................................... TK-890 : 40MHz (K), 32MHz (K2), 27MHz (K3) TK-890H : 30MHz