JRC JHS-32B, Instruction Manual

Page: 135 / 152

1
2
3
4
5
6
7
8
9
10
127
SPECIFICA
TIONS
●
CH70 Watchkeeping Receiver
Receiving frequency 156.525MHz (CH70)
Reception mode G2B (F2B)
Frequency accuracy Within
±
10 X 10 -6
Antenna impedance 50
Ω
unbalanced
Reception method Double superheterodyne
1st IF 58.1MHz
2nd IF 455kHz
Local oscillation frequency Receiving fre58.1MHz
Local oscillation method Frequency synthesizer
Sensitivity Symbol error rate of 1% or better at 1
µ
V
Selectivity 6dB bandwidth: 12kHz or more
70dB selectivity: 25kHz or less
Spurious response Symbol error rate of 1% or better at awanted signal level of 3dB
µ
and an unwanted signal level of 73dB
µ
.
Blocking Symbol error rate of 1% or better at a wanted signal level of 3dB
µ
and an unwanted signal level of 73dB
µ
.
Intermodulation Symbol error rate of 1% or better at a wanted signal level of 3dB
µ
and an unwanted signal level of 68dB
µ
.
De emphasis characteristics 6dB/oct, +1dB, –3dB
Radiation 4000
µµ
W or less
Channel Assignment Tables
(1) ITU Channels
• Channel 70 is available only for DSC. Voice transmissions are prohibited. Transmission power is fixed
at 25W.
• Channel 75 is the guardband for channel 16. Transmission on this channel is prohibited.
• Channel 76 is available only for NBDP. Voice transmission is prohibited.
CH TX(MHz) RX(MHz) CH TX(MHz) RX(MHz) CH TX(MHz) RX(MHz)
01 156.050 160.650 20 157.000 161.600 70* 156.525 156.525
02 156.100 160.700 21 157.050 161.650 71 156.575 156.575
03 156.150 160.750 22 157.100 161.700 72 156.625 156.625
04 156.200 160.800 23 157.150 161.750 73 156.675 156.675
05 156.250 160.850 24 157.200 161.800 74 156.725 156.725
06 156.300 156.300 25 157.250 161.850 75* – –
07 156.350 160.950 26 157.300 161.900 76* 156.825 156.825
08 156.400 156.400 27 157.350 161.950 77 156.875 156.875
09 156.450 156.450 28 157.400 162.000 78 156.925 161.525
10 156.500 156.500 60 156.025 160.625 79 156.975 161.575
11 156.550 156.550 61 156.075 160.675 80 157.025 161.625
12 156.600 156.600 62 156.125 160.725 81 157.075 161.675
13 156.650 156.650 63 156.175 160.775 82 157.125 161.725
14 156.700 156.700 64 156.225 160.825 83 157.175 161.775
15 156.750 156.750 65 156.275 160.875 84 157.225 161.825
16 156.800 156.800 66 156.325 160.925 85 157.275 161.875
17 156.850 156.850 67 156.375 156.375 86 157.325 161.925
18 156.900 161.500 68 156.425 156.425 87 157.375 161.975
19 156.950 161.550 69 156.475 156.475 88 157.425 162.025
8.2
8.1 Main Unit (JHS-32B) / 8.2 Channel Assignment Tables
TIP