WISCO International -Kenwood (TK-480/481 Specifications)

General	TK-480	TK-481
Frequency Range	Rx: 851~ 870 MHz Tx: 806 ~ 825 MHz 851~ 870 MHz (Talk Around)	Rx: 935 ~ 870 MHz Tx: 806 ~ 825 MHz 851 ~ 870 MHz (Talk Around)
System	Max. 32
Group	Max. 250 per system
Channel Capacity (conventional)	Max. 600
PLL channel spacing (PLL step: 12.5 kHz)	25 kHz	12.5 kHz
Battery voltage	7.5 V. DC � 20 %
Battery life KNB-16A KNB-17A KNB-21N KNB-22N	8 hours 10 hours 10.5 hours 13 hours
Operating temperature range	-22�F ~+ 140� F (-30� C ~ +60� C)
Frequency stability (-22�F ~+ 140�F)	� 0.00025 %	� 0.00015 %
Dimensions (W x H x D)	2-5/16 x 5-5/16 x 1-5/16 in. (58 x 135 x 34 mm) with KNB-21N battery)
Weight (net)	17.3 oz (490 g) with KNB-21N battery, antenna and belt hook
FCC ID	ALH22961110	ALH22992110
FCC compliance	Part 90
IC certification	282195282	282195286

RECEIVER EIA/TIA-603	TK-480	TK-481
RF input impedance	50 W
*Sensitivity (12 dB SINAD)**	0.30 �V
Selectivity*	70 dB: �25 kHz	63 dB: �12.5 kHz
Intermodulation distortion	65 dB: �25/50 kHz	60 dB: �12.5/25 kHz
Spurious & Image rejection	70 dB (except 1/2 IF)
Audio output	500 mW at 16W with less than 5% distortion
Channel frequency spread	19 MHz	6 MHz
TRANSMITTER TIA/EIA-603
RF power output: HI / LO	HI: 2.5 W, LO: 1W
RF output impedance	50 W
Spurious & harmonics	60 dB
Modulation	16K�F3E	11K�F3E
FM noise	45 dB	40 dB
Audio distortion	Less than 5%
Channel frequency spread	64 MHz	45 MHz