Dittel FSG 2T PS, Руководство оператора

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FSG 2T PS
Portable VHF/AM Airband Transceiver
May 2010 DITTEL – D10077
41
Receiver Muting, Squelch
(CLIMAX RX Operation)
Simultaneous input of:
Wanted Signal A : 5 µV (-93 dBm) +8 kHz (m = 30% / 1,000 Hz),
Squelch is open.
Unwanted Signal B : More than 12 µV (-85 dBm), m = 30% /
1000 Hz. While this channel frequency is varied slowly from
-8 kHz to +4 kHz, Squelch must remain open.
5.5 Detailed Transmitter Specification
TX RF Output Power
(also during emergency
operation)
approximately 5 Watts / 50 (carrier), 18 Watts PEP, at 9 Vdc
16.1 Vdc, -0.5 dB ... + 1,5 dB
TX Duty Cycle 1 : 4 (1 minute TX / 4 minutes RX)
Frequency Tolerance
10 ppm (-20°C ... + 55°C / -4°F ... + 131°F)
5 ppm (0°C ... + 40°C / +32°F ... + 104°F)
Modulation Amplitude modulation, AM (7K00A3EJN)
Depth of Modulation 85% ± 2%, approx. 60-70% AM average with Voice modulation
Modulation Distortion 10%, m = 70% / 1,000 Hz
15%, m = 70% / 350 ... 3,400 Hz
Modulation Audio Frequency
Response
6 dB (+2 dB / -4 dB), 350 ... 3,400 Hz
Modulation AF Input for m = 70%
Located at the rear panel DIL
switches and potentiometers
allow proper customized
microphone type selection and
proper modulation adjustment for
each MIC input
Standard factory setting:
Mike 1: Dynamic Microphone: 1 ... 10 mV symmetrical,
sensitivity adjustable.
Mike 2: Amplified / Carbon Microphone: 80 ... 500 mV
unsymmetrical, sensitivity adjustable.
Note : One, or two identical, dynamic or Standard Carbon
microphone(s) may be used on each mike input. For
Standard Carbon Microphone(s) the supply current can
be set to 2 mA, 8 mA, 10 mA, or none.
Transmit Audio Sidetone
50 mW into 300 (at 9 Vdc 16.1 Vdc supply)
average phone volume is adjustable on equipment's rear side
Carrier Noise Level
35 dB (m = 70% / 1000 Hz)
Emission of RF Energy ( 1 GHz) 0.25 µW (-36 dBm) / 71 dBµV / 3.54 mV / 50
25 nW (-46 dBm) / 61 dBµV / 1.12 mV / 50 , from
47 ... 68, 87.5 ... 108, 162 ... 244, 328 ... 336, 470 ... 862 MHz
Emission of RF Energy ( 1 GHz)
1 µW / -30 dBm / 77 dBµV / 7 mV / 50
Transmitter Spectrum Mask
70 dB attenuation at 1,250 Hz modulation / m = 60%, + 10 dB
Channel Selection Time
0.1 sec
Unwanted Frequency Modulation 1.0 kHz at m = 70% / 1000 Hz
TX Intermodulation 45 dB
TX Time-Out-Timer (TOT) After 2 minutes in continuous transmit Mode the transmitter is
disabled. The LC display flashes as time-out warning. RX now
possible.
Antenna Mismatching VSWR 3 : 1, normal operation
At VSWR 3 : 1 the requirements for modulation distortion,
spurious and harmonics output as well as frequency stability are
met. In addition, the RF output is 40 % / 2 Watt into 50
At VSWR 5 : 1 Transmitter is still functional.