CDR-3250/80 TECHNICAL MANUAL
1-2
Issue 2.2
WARNING
CAUTION
Refers to a procedure or practice that, if not
correctly followed, could result in injury, death,
or long term health hazard.
Refers to a procedure or practice that, if not
correctly followed, could result in equipment
damage or destruction.
Table 1-1 CDR-3250/80 Specifications.
Item
Specification
FREQUENCY
Tuning Range
10 kHz - 30 MHz
Resolution
1 Hz
Tuning Steps
Adjustable 1 Hz through 10 MHz
Internal Reference
Frequency Stability
1 ppm over temperature (standard TCXO).
0.1 ppm over temperature (optional high-performance OCXO).
External Reference Frequency
10 MHz (Automatically switches to external reference when external reference
signal is applied)
Synthesizer Lock Time
3 ms typical, 6 msec maximum
DETECTION MODES
LSB, USB, ISB, CW, AM, FM, FSK
DISPLAY
Full graphics vacuum fluorescent display
SCAN & SWEEP
Channels
250 programmable channels stored in nonvolatile memory
Scan
Up to 250 channels
Sweep
f1 to f2 at selected steps. Up to 125 frequency bands programmable
Rate
1 - 100 channels/second
Adjustable Threshold
-112 to 0 dBm in 1/2 dB increments
RF SECTION
Antenna Impedance
50 ohms
Antenna VSWR
Less than 3:1
Sensitivity for 10 dB
SINAD (above 1.6 MHz).
AM (6 kHz BW 50% modulation): min. -105 dBm.
FM (16 kHz BW 5 kHz dev. 400 Hz modulation, 20 dB sinad): -98 dBm.
CW (500 Hz BW): min. -122 dBm.
SSB (3 kHz BW): min. -113 dBm.
Protection
50 dB reflective attenuation. Activates at signal levels b10 dBm and +20
dBm. Protects from input signals of levels up to 10 Watts.
Preselection
Eight suboctave bandpass preselector filters used from 1.6 to 30 MHz.
Frequencies below 1.6 MHz are selected by two lowpass filters. Filter selection is
automatic with tuned frequency selection.
Courtesy of http://BlackRadios.terryo.org
