62
TK-480/481
SPECIFICATIONS

General

Frequency Range
RX......................................................... TK-480 : 851 to 870MHz TK-481 : 935 to 941MHz
TX......................................................... TK-480 : 806 to 825MHz (851 to 870MHz : Talk-Around)
TK-481 : 896 to 902MHz (935 to 941MHz : Talk-Around)
Systems.................................................... Maximum 32
Groups ...................................................... Maximum 250
Conventional Channels............................. Maximum 600
Channel Spacing....................................... TK-480 : 25kHz (PLL channel step 12.5kHz)
TK-481 : 12.5kHz (PLL channel step 12.5kHz)
Battery Voltage......................................... DC 7.5V
Battery Life ............................................... More than 8 hours at 5-5-90 duty cycle with KNB-16A battery
Temperature Range.................................. –30°C to +60°C (–22°F to +140°F)
Dimensions and Weight
With KNB-16A (1100mAh battery) ...... 135 (5.33) H x 58 (2.29) W x 34 (1.34) D mm (inch) 1.01lbs (460g)
(Dimensions not including protrusions, weight includes antenna and belt hook)
Receiver (Measurements made per TIA/EIA-603)
RF Input Impedance ................................. 50Ω
Sensitivity
12dB SINAD*....................................... 0.30µV
Selectivity* ............................................... TK-480 : 70dB±25kHz TK-481 : 63dB±12.5kHz
Intermodulation* ...................................... TK-480 : 65dB±25/50kHz TK-481 : 60dB±12.5/25kHz
Spurious (Except for IF 1/2)*.................... 70dB
Frequency Stability ................................... TK-480 : ±0.00025% (–30��C to +60°C)
TK-481 : ±0.00015% (–30°C to +60°C)
Channel Spread......................................... TK-480 : 19MHz TK-481 : 6MHz
Audio Power Output................................. 500mW at 16Ω less than 5% distortion
* : Typical specifications
Transmitter (Measurements made per TIA/EIA-603)
RF Power Output
High...................................................... 2.5W
Low ...................................................... 1W
RF Output Impedance .............................. 50Ω
Spurious.................................................... –60dB
Modulation................................................ TK-480 : 16K0F3E, 16K0F1D, 15K0F2D, 14K0F3E, 14K0F1D, 13K0F2D
TK-481 : 11K0F3E, 11K0F1D, 10K5F2D
FM Noise .................................................. TK-480 : –45dB TK-481 : –40dB
Audio Distortion........................................ 5.0% or less
Frequency Stability ................................... TK-480 : ±0.00025% (–30°C to +60°C)
TK-481 : ±0.00015% (–30°C to +60°C)
Channel Spread......................................... TK-480 : 64MHz TK-481 : 45MHz