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General Frequency Range ............................................................. 136~174MHz (K, M) Number of channels ......................................................... Max. 16 Number of groups ............................................................ Max. 16 Channel Spacing............................................................... 25kHz, 30kHz (Wide) 12.5kHz, 15kHz (Narrow) PLL Channel Stepping ...................................................... K : 2.5kHz, 5kHz, 6.25kHz, 7.5kHz M : 5kHz, 6.25kHz Operating Voltage ............................................................ 7.5 VDC±20% Battery Life ....................................................................... More than 9 hours at 5 watts (5-5-90 duty cycle with KNB-24L battery) Operating Temperature range .......................................... –30°C to +60°C (–22 °F to +140 °F) Dimensions and Weight With KNB-24L (1400mAh battery).................................. 56 (2-3/16) W x 109.3 (4-5/16) H x 34.5 (1-3/8) D mm (in) 290g (0.64lbs) With KNB-25A (1200mAh battery) ................................. 56 (2-3/16) W x 109.3 (4-5/16) H x 40.7 (1-5/8) D mm (in) 355g (0.78lbs) With KNB-26N (2000mAh battery) ................................. 56 (2-3/16) W x 109.3 (4-5/16) H x 40.7 (1-5/8) D mm (in) 400g (0.88lbs) Receiver (Measurements made per EIA standard EIA-603) Sensitivity EIA 12dB SINAD ........................................................... 0.25μV (Wide)/0.28μV (Narrow) Selectivity ......................................................................... 70dB (Wide)/62dB (Narrow) Inter modulation ............................................................... 65dB (Wide)/60dB (Narrow) Spurious response ........................................................... 65dB Audio Power Output ........................................................ 500mW Frequency Stability ........................................................... ±2.5ppm Channel Frequency Spread .............................................. 38MHz (K, M) Transmitter (Measurements made per EIA standard EIA-603) RF Power Output ............................................................. 5W/1W Spurious and Harmonics .................................................. 70dB Modulation ....................................................................... 16KφF3E (Wide)/11KφF3E (Narrow) FM Noise.......................................................................... 45dB (Wide)/43dB (Narrow) Audio Distortion ............................................................... Less than 5% Frequency Stability ........................................................... ±2.5ppm Channel Frequency Spread .............................................. 38MHz (K, M)