WJ-8711A DIGITAL HF RECEIVER
GENERAL DESCRIPTION
1-7
1.3
EQUIPMENT SUPPLIED
The equipment supplied with the WJ-8711A consists of an Intermediate Level Maintenance
Manual, a six-foot AC power cord, a 3-1/2 inch diskette, and four plastic feet. The diskette contains a freeware
program, entitled WJ-871Y/PCSW. This program provides a graphical user interface that controls the WJ-711A
for demonstration purposes. This undocumented program runs under a Microsoft
©
Windows
®
environment.
The four plastic feet can be easily installed on the bottom of the unit for table top operation.
1.4
EQUIPMENT REQUIRED BUT NOT SUPPLIED
To obtain full utilization of the receiver, equipment from the following list should be selected:
•
HF Antenna, 50 ohm
•
Headphones, 600 ohms
•
Line audio monitoring equipment
•
Signal Monitoring equipment
•
Remote Controller, CSMA or RS-232C compatible
•
CI-V Level Converter (COM Model CT-17) when using the CSMA interface
with a RS-232C remote controller.
1.5
RECEIVER OPTIONS
1.5.1
WJ-871Y/REF REFERENCE GENERATOR OPTION
This factory-installed option improves the WJ-8711A internal reference generator stability from
better than 0.7 ppm to better than 0.2 ppm over an operating range of 0
°
C to 50
°
C. Refer to
Appendix A
for
further information on the WJ-871Y/REF option.
1.5.2
WJ-8711/PRE SUBOCTAVE PRESELECTOR OPTION
This option provides band filtering of the incoming RF spectrum between 0 and 30 MHz for
improved second and third order intercept point performance. The WJ-8711/PRE option uses eleven separate
filter bands, each covering a segment of the overall range. The appropriate filter is automatically selected as the
receiver is tuned. Refer to
Appendix B
for further information on the WJ-8711/PRE option.
1.5.3
WJ-8711A/COR CARRIER-OPERATED RELAY OPTION
This option provides a rear panel switching circuit capable of transferring power supplied at the
circuit's input connector to external equipment via the output connector only when received signal strengths
exceed the defined squelch threshold level. Refer to
Appendix C
for further information on the
WJ-8711A/COR option.
Courtesy of http://BlackRadios.terryo.org
Summary of Contents for WJ-8711A
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