Japan Radio Co. JRV-500B, Руководство по обслуживанию

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3. Specifications
3.1 General
1) Frequency range
Transmission : 156.025-156.875MHz(simplex)
160.625-162.025MHz (duplex)
Reception : 156.025-157.425MHz
2) Memory channels : Up to 8 channels
(Memory - channel mode)
3) Communication system : Simplex press-to-talk
Duplex press-to-talk
4) Class of emission : G3E (F3E, with 6dB octave pre-
emphasis)
5) Antenna impedance : Nominal 50
Ω
unbalanced
6) External control
a. Parallel interface
Items of control/supervise : Channel selection,
Control of power on-off, press
on-off, squelch on-off
Supervising items : Remote/Local indication
Alarm, squelch on indication
b. Serial interface RS-422 remote control model
stop:1, data:8, parity:odd, baud rate:200/1200
Items of control/ : Channel selection (channel supervising
Supervising selection, memory channel selection,
control of power on-off, press on-off
power reduce on-off)
Supervising items : Remote/Local indication
Alarm indication (TX PLL unlock, RX PLL
unlock, low output power, overheat)
7) Operating temperature range
: -10
o
C to +50
o
C
8) Device storing temperature
: -20
o
C to +60
o
C
9) 4wire remote control (option) : Voice 300Hz to 2700Hz
Control 3000Hz to 3400Hz
Nominal 600
Ω
balanced, -13dBm
±
10dB
200bps :with voice
1200bps :without voice