98 MDS 4790/9790 Series I/O Guide MDS 05-3438A01, Rev. F
TRANSMITTER
Frequency Stability:
±1.5 ppm
Carrier Power Accuracy:
±1.5 dB
Adjacent Channel
Power: –60 dBc
Spurious Emissions: –36 dBm, 9 kHz to 1 GHz
–30 dBm, 1 GHz to 12 GHz
Frequency Range: MDS 4790: 330 to 512 MHz
MDS 9790: 800 to 960 MHz
Modulation Type: Binary CPFSK
Carrier Power: Standard models—
100 mW to 5 W in 1 dB increments
Duty Cycle: Continuous
Output Impedance: 50 Ohms
Bandwidth Compatibility: 12.5 kHz, 25 kHz for MDS 4790C-model
Harmonics
2nd harmonic:
3rd harmonic
and higher:
–73 dBc
–67 dBc
Transmitter Keying: Data activated, or RTS
Agency Approvals: MDS 4790A
FCC Part 90
Industry Canada
MDS 4790E
ETSI: ETS 300 113
EMC: EN 300 279
CE Mark
MDS 9790A
FCC Part 101
Industry Canada
RECEIVER
Maximum Usable
Sensitivity:
MDS x790A: –110 dBm @ 10–6 BER
MDS x790C: –105 dBm @ 10–6 BER
MDS 4790E: –114 dBm @ 10–6 BER
MDS 4790S: –103 dBm @ 10–6 BER
Co-Channel Rejection: 0 to –12 dB, typical
Adjacent Channel
Selectivity: 60 dB
Spurious Response
Rejection: 70 dB
Frequency Range: MDS 4790: 330 to 512 MHz
MDS 9790: 800 to 960 MHz
Type: Double conversion superheterodyne
Frequency Stability:
±1.5 ppm
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