16
13) Total Distortion and Noise: more than 20dB
14) Output Impedance: 50ohm
15) Low frequency input: + 10dB / -35dB, IMPEDANCE 600 ohm
3-3
RECEIVER SPECIFICATIONS
1) Type of emission: J3E (USB), F1B (FSK)
2) Reception method: UP CONVERSION Double super-heterodyne method using phase
LOCK type DIGITAL frequency SYNTHESIZER.
First intermediate frequency: 64.455 MHz, second intermediate frequency: 455 kHz
3) Frequency range: 500kHz ~ 29.99990MHz, 10Hz STEP
However, the TELEX frequency, which is interlocked with the DSC, is not input.
4) Voice output: Maximum output more than 5.6W
5) Receiving sensitivity: SSB is less than 3
㎶
at the frequency of 500kHz ~ 29.99990MHz.
SSB (S + N + D) / (N + D) = 20 dB, BAND width: 3 kHz,
Output: in case of 100mW DSC, NBDP character error rate at a receiver input voltage 1
㎶
is less than 1 x10
-2
Reception MODE: FSK, BAND Width: 0.3 kHz
6) 1 signal selectivity:
①
3kHz FILTER (for SSB) details of characteristics
6dB lowered passband bandwidth: 2.4kHz to 2.8kHz
26dB attenuation bandwidth: within ± 1.7kHz
46dB attenuation bandwidth: within ± 1.9kHz
66dB attenuation bandwidth: within ± 2.1kHz
②
0.3kHz FILTER (for DSC, NBDP) details of characteristics
6dB lowered passband bandwidth: 270Hz to 300Hz
Attenuation at ± 380Hz is more
than 30dB
A
ttenuation at ± 550 Hz
is more than 60 dB
7) Clarity: ± 200
Hz
8) Comprehensive Distortion and Noise: When the input voltage of 30
㎶
is applied, the
ratio of low frequency output 1000Hz and its unnecessary component is more than
20dB.
9) AGC characteristics: change of law frequency output for 100mV from 3
㎶
antenna
input is less than 10dB.
10) Frequency stability: w
ithin ± 10Hz