WJ-8611 DIGITAL VHF/UHF RECEIVER
1-2 GENERAL
DESCRIPTION
Table 1-1. Table of Specifications
Frequency Range...............................................2 to 1000 MHz (specifications apply to 20 to 1000 MHz)
Tuning Resolution .............................................10 Hz
RF Input Impedance ..........................................50 ohms, nominal
Input VSWR ......................................................2:1, typical; 3:1, maximum
Noise Figure ......................................................12 dB, maximum
Preselection .......................................................20% bandwidth, tracking filter
Intermodulation Performance:
2nd-Order Input Intercept Point ................+40 dBm, typical
3rd-Order Input Intercept Point .................+4 dBm, minimum
Image Rejection.................................................80 dB, minimum
Blocking ............................................................Attenuation of a desired -90 dBm RF signal by a -5 dBm
interfering signal offset by 20 MHz is < 3 dB.
IF Rejection .......................................................80 dB, minimum
Maximum Input Signal......................................+20 dBm, without damage
Internally Generated Spurious...........................<-110 dBm equivalent input
Reciprocal Mixing.............................................With an input signal at rated sensitivity level in the
50-kHz bandwidth, an out-of-band signal removed by
350 kHz and 70-dB higher in level will not degrade the
specified S+N/N ratio of the desired signal by more than 3
dB.
LO Level at RF Input ........................................-90 dBm, maximum
LO Phase Noise .................................................<-95 dBc/Hz @ 10 kHz offset
Synthesizer Lock Time......................................10 msec, maximum to within 1 kHz
Internal Frequency Accuracy ............................
±
0.5 x 10-6 (5 to 40
°
C)
IF Bandwidths (6 dB BW).................................200 kHz, 150 kHz, 100 kHz, 60 kHz, 50 kHz, 35 kHz,
30 kHz, 20 kHz, 15 kHz, 10 kHz, 8 kHz 6.4 kHz, 5 kHz,
3.2 kHz, 1 kHz, 500 Hz, 200 Hz
IF Shape Factor .................................................<1.5:1 (60 dB/6 dB), typical
AFC ...................................................................Automatic with disable
Gain Control Modes ..........................................Manual (MGC) and Automatic (AGC)
Gain Control Range...........................................90 dB, minimum
Manual Gain Resolution....................................1 dB, nominal
COR/Squelch Range..........................................Adjustable from -130 to -30 dBm
COR/Squelch Resolution ..................................1 dB, nominal
Detection Modes................................................AM, FM and CW, all bandwidths
USB and LSB for 3.2 kHz BW
ISB for 6.4 kHz BW
Variable BFO Range .........................................
±
8 kHz
Variable BFO Resolution ..................................10 Hz steps
Signal Monitor Output.......................................Nominally 12 dB above the RF input, 10 MHz bandwidth
Switched Video Output Level ...........................1.0 V peak-to-peak into 50 ohms (for 30% deviation FM
or 50% AM modulation)
Video Frequency Response ...............................dc to 1/2 the selected IF bandwidth
Line Audio Output Level ..................................0 dBm into 600 ohms, nominal
Sensitivity..........................................................See
Table 1-2
Control Interface................................................RS-232 and IEEE-488
Power Requirements..........................................90 to 264 Vac, 48 to 440 Hz
Power Consumption ........................................ 50 W, maximum
Courtesy of http://BlackRadios.terryo.org
Summary of Contents for WJ-8611
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