JRC JSS-2250, Instruction Manual

Page: 174 / 220

Specifications
9-2
z
Transmitter
Antenna output power
(JSS-2250/ 2500)
1605.0
- 3999.9 kHz
AC
：
200Wpep / 400Wpep
24VDC
：
100Wpep / 100Wpep
4000.0
- 27500.0 kHz
AC
：
250Wpep / 500Wpep
24VDC
：
150Wpep / 150Wpep
Modulation method Low-power stage balanced modulation
Occupied bandwidth J3E/ J2D/ H2B : Within 3 kHz
F1B/ A1A : Within 0.5 kHz
Carrier suppression (J3E) 40 dB or more
Unwanted emissions in the
out-of-band domain Mean power of 50 mW or lower, or 43 dB or more lower
than the mean power of the basic frequency
Unwanted emissions in the
spurious domain At J3E:
1.5 to 4.5 kHz : 31 dB or more
4.5 to 7.5 kHz : 38 dB or more
7.5 kHz and upwards : 43 dB or more
(Peak power of unwanted emissions is 50 mW or less.)
At F1B:
Mistuned frequency [Hz]
Attenuation [dB]
Overall distortion and noise -20 dB or less
AF frequency response Deviation is within 6 dB in 350 Hz to 2700 Hz range.
Tone frequency 1500 Hz or 1400 Hz
z
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 (1605.0 to 27500.0 kHz)
F1B : 0.7 uV or less (1605.0 to 27500.0 kHz)
A1A : 1.4 uV or less (1605.0 to 27500.0 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