Specifications
9-3
Receiver
Receiving system Double superheterodyne
1st IF 70.036 MHz
2nd IF 36 kHz
Reception frequency stability Within ±10 Hz
Sensitivity (SINAD 20dB) J3E : 2.5 uV or less (1605.00 to 27500.00 kHz)
F1B : 0.7 uV or less (1605.00 to 27500.00 kHz)
A1A : 1.4 uV or less (1605.00 to 27500.00 kHz)
Pass band/Adjacent signal
selectivity
J3E : 2.4 - 3.0 kHz (6 dB bandwidth) within
±2.1 kHz (66 dB bandwidth)
F1B : 270 - 300Hz (6 dB bandwidth) within
±550 Hz (60 dB bandwidth)
Spurious response J3E : 60 dB or more
F1B : Symbol error rate of 1% or better at a wanted
signal level of 10 uV and an unwanted signal
level of 31.6 mV separated by 750 Hz
Blocking/Desensitization J3E : When an unwanted signal level separated by 3
kHz is added to the wanted signal level of 10 uV,
the unwanted signal input voltage suppressing
output of the wanted signal by 3 dB is 10 mV or
more.
F1B : Symbol error rate of 1% or better at a wanted
signal level of 10 uV and an unwanted signal
level of 1 mV separated by 500 Hz
Overall distortion and noise When an input signal level of 30 uV is applied, the ratio
between low-frequency output 1000 Hz and unwanted
components contained in that output is 30 dB or more.
Conducted spurious emission Power emitted from antenna terminal is 2 nW or less (9kHz -
2GHz) and 20 nW or less (2GHz - 4GHz).
Clarifier variable range ±200 Hz (1 Hz steps)
Antenna impedance 50Ω unbalanced
Line output 0 dBm 600Ω (balanced)
DSC Watch Keeping Receiver
Reception frequency Distress and safety frequencies of 2187.50 kHz and 8414.50
kHz, and additionally on one or more of the 4207.50 kHz/
6312.00 kHz/ 12577.00 kHz/ 16804.50 kHz
Receiving system Double superheterodyne
1st IF 40.04025 MHz
2nd IF 40.25 kHz
Frequency stability Within ±10 Hz
Sensitivity 1% or lower symbol error rate at reception input voltage of
1µV
Passband 6 dB bandwidth : 270 - 300 Hz
30 dB bandwidth : Within ±380 Hz
60 dB bandwidth : Within ±550 Hz
Spurious response Symbol error rate of 1% or better when an unwanted signal
level of 31.6 mV is applied to a wanted signal level of 10 uv
from an intermediate frequency separated by 750 Hz or
more through to a frequency 3x the test frequency
Blocking/Desensitization Symbol error rate of 1% or better at a wanted signal level of
10 uV and an unwanted signal level of 1 mV separated by
500 Hz
Conducted spurious emission Power emitted from antenna terminal is 2 nW or less.
Antenna impedance 50Ω unbalanced
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