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WJ-8711A

WJ-8711A-3 Configuration

Specifications

The WJ-8711A-3 configuration is the same as the standard WJ-8711A with the following
exceptions:

Options .................................................................. REF & PRE standard

Detection Modes ................................................... includes FSK

IF Rejection ........................................................... -90 dBm

Operating Temperature Range ............................ -5 to +50

o

C

In addition, an operator may use the RS-232 remote interface to output the string message
AXXXXXXXX + BXXXXXXXX + CR (where XXXXXXXX is the receiver frequency) upon activation
of the A or B front-panel button.  These push-button functions become especially useful when the
WJ-8711A-3 acts as an RF front end for certain DF applications.

Technical Update

WATKINS-JOHNSON

December 1996

Digital HF Receiver

WJ-8711A

Specification subject to change without notice.

Printed in the U.S.A

.

WATKINS-JOHNSON COMPANY

700 Quince Orchard Road, Gaithersburg, Maryland 20878-1794
Phone:  (800) WJHELPS or +(301) 948-7550
FAX:  +(301) 921-9479    Email:  [email protected]    Website:  www.wj.com

All International sales of WJ equipment are subject to USA
export license approval.
This material provides up-to-date general information on
product performance and use.  It is not contractual in nature,
nor does it provide warranty of any kind.

Summary of Contents for WJ-8711A

Page 1: ...om 0 5 to 20 seconds or infinite In channel scan mode 100 programmablememorychannelsareavailable Sectorsof memorycanbespecifiedforindividualchannelscans Digital HF Receiver WJ 8711A Features Frequency...

Page 2: ...e exception of the front panel mountedheadphonejack Theantennaand externalreferenceinputs aswellasthesignalmonitor andpredetectedIFoutputs areavailableonBNC connectors Speakeranddual balancedlineaudio...

Page 3: ...0 20 40 60 80 10 0 110 1 2 0 GA I T HE RS B UR G M D U S A REMOTE CONTROL BY RS 232 OR CSMA CD DEDICATED CONTROLS FOR SCANNING AND MEMORY FUNCTIONS ILLUMINATED SIGNAL STRENGTH METER CALIBRATED IN dBm...

Page 4: ...maninternal10 MHz oscillator that can be locked to an external reference input of 1 2 5 or 10 MHz The WJ 8711A auto maticallysensesandswitchestotheexternalrefer enceuponapplicationofsignal Allcritical...

Page 5: ...tainidenticalaudio signals Thesetwoaudiopathsareprocessedto providea2 channelheadphoneoutput twobalanced 600 ohmlineaudiooutputsandan8 ohmspeaker outputcontainingoneorbothaudiochannelsinISB mode After...

Page 6: ...preamplifier engaged Detection Modes AM SAM FM CW USB LSB ISB consult factory for additional demodulation modes Minimum IFBW S N N Without Preamp Modulation kHz dB Min dBm mV AM 50 mod at 400 Hz 6 0 1...

Page 7: ...14 dBm referred to the RF input Blocking An unwanted signal 1 mV separated 20 kHz from a desired signal of 1 mV will not cause the IF output to fall by more than 3 dB Line Audio Outputs Number of Outp...

Page 8: ...andom vibration 1 04Gs non operating 2 hours B Ground mobile wheeled or tracked vehicle Category 8 Random vibration 6 0Gs operating 15 minutes C Marine shipboard vessel not specified Category 9 Random...

Page 9: ...button functions become especially useful when the WJ 8711A 3 acts as an RF front end for certain DF applications Technical Update WATKINS JOHNSON December 1996 Digital HF Receiver WJ 8711A Specifica...

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