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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
Содержание JSS-2250
Страница 2: ......
Страница 9: ...vii NBD 2250 2500 Power supply Upper view NFC 2250 2500 Antenna tuner NBB 714 724 Battery charger...
Страница 17: ...xv NDZ 227 Data terminal NDF 369 Keyboard NKG 800 Printer...
Страница 26: ...xxiv...
Страница 40: ...Equipment Overview 1 14...
Страница 172: ...Disposal 8 1 8 DISPOSAL Observe all rules and regulations of the local authorities when disposing of this equipment...
Страница 192: ...Options Operation 10 10...
Страница 216: ...Appendix 11 24...
Страница 218: ......
Страница 219: ......