JRC JHS-770S -, Instruction Manual

Page: 144 / 162

Specifications
9-2
● Transmitter
Antenna output power 8W - 25W (Reduced output: 0.5W - 1W) +20%, -50%
Oscillation method Frequency synthesizer
Modulation method Frequency modulation
Carrier frequency error ±1.5kHz or less
Maximum frequency deviation ±5kHz or less
Occupied bandwidth 16kHz or less
Pre-emphasis characteristics 6dB/oct 1dB, -3dB
Overall distortion 10% or less
Adjacent channel power -70 dB or 0.2 μ W or less
Unwanted emissions in the
out-of-band domain
3.125µW or less
Unwanted emissions in the spurious
domain
3.125µW or less
Spurious emissions
(EN300 338, EN301 925) 9kHz-2GHz: 0.25µW or less
2GHz-4GHz: 1µW or less
Residual modulation -40dB or less
● Receiver
Receiving system Double superheterodyne
1st IF 21.4MHz
2nd IF 455kHz
Local oscillation frequency Reception frequency - 21.4 MHz
Local oscillation method Frequency synthesizer
Frequency accuracy ±10 x 10
-6
or less
Sensitivity (phone) 6dB μ V or less (SINAD=20dB)
Sensitivity (DSC) 1% or lower symbol error rate at 0dB μ V
Selectivity 6dB bandwidth: 12kHz or more, 70dB selectivity: 25kHz or less
Signal-to-Noise ratio 40dB or more
Audio output variance 3dB or less
De-emphasis characteristics 6dB/oct, 1dB, -3dB
Co-channel selectivity -10 - 0dB
Adjacent channel selectivity Sensitivity ratio 80dB or more
Desensitization effect (phone) 80dBµV or more
Desensitization effect (DSC)
Symbol error rate of 1% or better at a wanted signal level of 3dB μ V
and an unwanted signal level of 73dB μ V
Spurious response (phone) Sensitivity ratio 70dB or more
Spurious response (DSC)
Symbol error rate of 1% or better at a wanted signal level of 3dB μ V
and an unwanted signal level of 73dB μ V
Intermodulation characteristics
(phone)
65dBµV or more
Intermodulation characteristics
(DSC) Symbol error rate of 1% or better at a wanted signal level of 3dB μ V
and an unwanted signal level of 73dB μ V
Blocking characteristics 90dBµV or more
Radiation
9kHz - 2GHz: 2nW or less
2GHz - 4GHz: 20nW or less
Squelch mute -40dB or less
Squelch open level +6dBµV or less
Overall distortion 10% or less