Precident Walker 2

FEATURES, FUNCTIONS AND SPECIFICATIONS:

• 40 channels AM / FM
• Channel rotary switch
• Volume adjustment and ON/OFF
• Manual squelch and ASC
• Multi-functions LCD display
• Frequencies display
• S/RF vu-meter
• Public Address
• Scan
• Talkback
• Beep Function
• Roger Beep
• Tone
• ANL filter, NB, HI-CUT
• RF Gain / Mike gain 
• RF Power
• Mic type electret / dynamic
• F function key
• VOX
• Mode switch AM / FM
• Preset emergency (EMG 1/2)
• SWR (Power Reading /SWR)
• Front microphone plug
• External loudspeaker jack
• USB 5V 2.1A

General
• Number of channels: 40 
• Modulation modes: AM / FM 
• Frequency ranges: from 26.965 MHz to 27.405 MHz 
• Antenna impedance: 50 Ohms 
• Power supply: 12 V 
• Size: 170 (L) x 160 (H) x 52 (D) mm 
• DIN Size: Yes 
• Weight: 1,1 kg 
• Accessories supplied: 
…power cord with fuse
…1 microphone UP/DOWN and its hanger
…1 mounting bracket with fixing screws

Transmission
•  Frequency allowance: +/- 200 Hz 
• Carrier power: 4 W AM / 4 W FM 
• Transmission interference: inferior to 4 nW (- 54 dBm) 
• Audio response: 300 Hz to 3 KHz in AM/FM 
• Emitted power in the adj. channe : inferior to 20 μW 
• Microphone sensitivity: 3.0 mV 
• Drain: < 2 A (with modulation) 
• Modulated signal distortion: 1,8 % 

Reception
• Maxi. sensitivity at 20 dB sinad:
…0.5 µV - 113 dBm (AM)
…0.35 µV - 116 dBm (FM) 
• Frequency response: 300 Hz to 3 kHz in AM/FM 
• Adjacent channel selectivity: 60 dB 
• Maximum audio power: 3 W 
• Squelch sensitivity: 
…Minimum 0.2 μV - 120 dBm
…Maximum 1 mV - 47 dBm 
• Frequency image rejection rate: 60 dB 
• Intermediate frequency rej. rate: 70 dB 
• Drain: 180 ~ 500 mA maximum

REPLACEMENT MICROPHONES(S):
• PRES ACFD520 = Mike DNC520 with Up/Down
• PRES ACFD521 = Mike DNC520
• DM-520-6P = Replacement Microphone of the Brand Komunica 
• DM-520-6P U/D