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AOR SDU-5500
Spectrum Display


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Specifications | LCD | Back Panel | I/O


It has never been so easy to locate brief elusive transmissions. Coupled to the AR5000 series receiver, the AOR SDU-5500 now provides a spectrum display of 10 MHz bandwidth between 10 kHz and 2600 MHz! Menu driven operation: All facilities are within easy access through each dedicated function key and on-screen menu. Full interconnection with the AR5000 is achieved. The AR5000 can be operated from the SDU5500 enabling selection of center frequency, receive mode, etc. Any frequency spotted and monitored by the SDU5500 can be received by the AR5000 straight way. The screen is 4.7 inch diagonal white/blue monochromatic LCD.

Direct reading of the receiving frequency and input level: By placing the cursor on any spot frequency, you can read its frequency and input level on LCD screen. When connected with the AR5000, the SDU5500 virtually works as a spectrum analyzer over 10 kHz to 2600 MHz range as the center frequency always becomes the receive frequency. The SDU5500 comes with an AC power supply, BNC to BNC cable to connect to the IF output of the AR5000 and a DB9 to DB9 serial cable to connect to the AR5000. There is also a second DB9 serial jack on the back of the SDU5500 use by a controlling computer. The SDU5500 includes a 120 VAC AC adapter.

Input Frequency: 10.7 MHz
Sweep Width: 1 kHz to 10 MHz (1 kHz step)
Frequency Accuracy: +/- 600 Hz
Resolution Bandwidth: 5 / 30 kHz
Reference Level: -10 , -40 dBm
Maximum Input Level: -10 dBm
Dynamic Range: 50 dBm min
Level Accuracy: Linearity within +/- 2 dB (within -40 dB from reference level)
Band Ripple: +/- 4 dB @ 10.7 MHz +/- 5 MHz
Temperature: +/- 6 dB (0 - 40 degrees Celsius, 32 - 104 degrees in Fahrenheit)
Marker Mode: Direct read-out for frequency and level, Peak Detect + continuous Peak Detect, Averaging ( 2 to 32 times sampling adjustment)
Plot Mode: Outline, Paint
Display Mode: SPECT / STRES / CHANL
Input Impedance: 20 K ohm
Display Type: 4.7 inch diagonal dot matrix STN LCD
Display resolution: 304 x 128 dots
Screen Refresh: 500 mS
Backup: From primary 12 V DC supply
Dimensions: 8.86 x 4.88 x 9.45 inches (225 x 124 x 240 mm)
Weight: 6.7 Lbs (3.02 Kg)
Power Requirements: 12 V DC nominal @ 1Amp
Supported companion radios: AR5000/AR5000+3/AR5000C, AR3000A

Note when used with other 10.7 MHz IF output receivers (ICOM IC-R7100, IC-R8500, IC-R9000): the center frequency is programmable in the approx. range of 5.7 to 15.6 MHz but the offset from 10.7 MHz will reduce the available frequency span... i.e. if the center frequency is set to 7.5 MHz, the maximum span will be reduced by twice the offset 10.7 - 7.5 = 3.2 x 2 = 6.4, therefore the maximum available bandwidth span is 10 - 6.4 = 3.6 MHz

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