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Radyne SFC1275A Ku-Band Frequency Synthesized Down Converter

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  • High-Performace at a Low-Cost
  • Low Phase Noise
  • 125 kHz Frequency Resolution
  • Available in Extended Frequency Bands


SKU: SATRES-16276

Input Characteristics
Frequency 10.95 - 11.70 GHz (Plan A)

12.25 - 12.75 GHz (Plan B)

11.70 - 12.20 GHz (Plan C)

10.95 - 12.75 GHz (Global)
Impedance 50 Ohms
Return Loss >19 dB
P1 dBm Input -20 dBm
Input Dynamic Range -25 dBm Aggregate Signal

Power to -110 dBm Carrier Level
Connector SMA, Type-F
Output Characteristics
Frequency 70 MHz ±18 MHz Standard

140 MHz ±36 MHz Optional
Impedance 75 Ohms
Return Loss >23 dB Maximum; -26 dB Typical
P1 dBm Output +19 dBm
Connector BNC, F
Transfer Characteristics
Type Double Conversion, No Spectral Inversion
Gain 40 dB Maximum @ 0 dB Total Attenuation
Gain Control 40 dB in 0.1 dB Increments

(0 dB to +40 dB Conversion Gain)
Gain Ripple ±0.5 dB/36 MHz
Gain Slope ±0.05 dB/MHz
Gain Stability ±0.25 dB/24 Hours, ±1.0 dB; 0 to 50°C
Noise Figure 12 dB Max. @ 0 dB Attenuation
Spurious -80 dBm Local Oscillator Related Spurious (In-Band) at Minimum Attenuation -50 dBc Signal Related Spurious (In-Band) at Minimum Attenuation
Line Frequency Reference < -50 dBc @ ±100 kHz
Third Order Intercept +30 dBm -60 dBc IMD Two Tones with 0 dBm Total Output Power
AM/PM Conversion 0.15°/dB
Frequency Synthesizer Characteristics
Resolution 125 kHz Step Size (optional 1KHz)
Stability ±5 x 10-9 Over Temperature

(0 to 50° C) +1 x 10-9/24 Hours
Accuracy ±5.0 x 10-9 After 20 Minutes
Single Side Band Phase Noise
Offset Ku-Band Standard
10 Hz -50 dBc/Hz
100 Hz -60 dBc/Hz
1 kHz -80 dBc/Hz
10 kHz -84 dBc/Hz
100 kHz -94 dBc/Hz
1 MHz -110 dBc/Hz
Ext. Reference 10 MHz, 0 dBm, 50 Ohms (5 MHz Optional)
Group Delay
Linear 0.035 nsec./MHz
Parabolic 0.0075 nsec./MHz²
Ripple 1.5 nsec. p-p for ±18 MHz
Operator Interface
Front Panel Keypad Control, LED Indicators, and LCD Indicators
Remote Interfaces Terminal (RS-232), ASCII and RLLP (RS-232/RS-485)
Rear Panel Connections RF Input (SMA 50 Ohms), IF Output (75 Ohm BNC), Operator Serial Port (DB 9-Pin), 10 MHz REF In (BNC), REF Out (BNC), Fault/Test (DB-9 Pin), Switch Interface (DB-15 Pin), Equipment RS-485 Interface (DB-9 Pin), IEC/EN60320/C13 Power Entry Module/Switch, #10 Ground Lug, Series Switch Interface (Optional)
Front Panel Test Ports RF Monitor -15 dB; IF Monitor -15 dB
Physical Characteristics
Size 19" x 1.75" x 19" Deep

(48.2cm x 4.44cm x 48.26cm Deep)
Weight 12 lb. (5.44 Kg)
Primary Power 100 to 240 VAC, 50 to 60 Hz, 1.0 A
Power Consumption 50 Watts
Environmental Characteristics
Operating Temperature 0 to 50°C
Humidity To 95% Non-Condensing
Altitude To 8,000 Feet (2.438 meters) AMSL
Shock and Vibration No loss of frame synchronization at the BER Test set due to a standard hammer drop test on any outside surface of converter. Likewise, no loss of frame sync for temp gradient of ± 22°C/Hour
Non-Operating Temperature -32 to +65°C, 99% Humidity, Non-Condensing

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