Q6 Specifications


Contents

FPQ-6 Control console. Standing foreground Ron Burgess with Geoge Allan in front of him operating the controls, then to the right Len Algate, Q6 Engineer, hidden behind him Monte Sala, and at the back Mike Marsh. Seated unknown RCA engineers?: Photo – George Allan
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FPQ-6 Control console. Standing foreground Ron Burgess with Geoge Allan in front of him operating the controls, then to the right Len Algate, Q6 Engineer, hidden behind him Monte Sala, and at the back Mike Marsh. Seated unknown RCA engineers?: Photo – George Allan

Brief System Details

Antenna: 29 ft Cassegrain feed, Gain - 51 db across the band.
Feed: Five horn monopulse
Depth of Null: 35 db
Bandwidth: 0.4 degree.
Polarisation: Transmit and receive vertical …
… or Transmit left hand circular Receive right hand circular
Rates: 500 mil/second. (both Azimuth and Elevation)
Would track smoothly at 0.01mils/sec. (1 degree = 17.8 mils)
Drive: Hydraulic, Azimuth bearing is hydrostatic.
Rotation: Azimuth 360 degrees continuous.
Elevation: -2 to +182 degrees.
Receiver: Three channel amplitude monopulse.
Dynamic Range: 120 db.
Threshold: Paramps on, 0.6 Mhz I.F. bandwidth, -112 dbm .
Preamplifier: Heated parametric amplifier (one per channel) Gain 17 db, bandwidth 100 khz.
Noise Figure: Paramps on: 4 db. Paramps off: 10 db.
I.F.: 30 Mhz
I.F. Bandwidth: 4.8, 2.4, 1.6 or 0.6 Mhz
Transmitter: Power (pulse): 3.00 Megawatts, (average): 5.00 kilowatts
Duty cycle: 0.00167 max.
Pulse width: 0.25, 0.5, 1.0 or 2.4 microseconds
Pulse Rep. Freq.: 150 or 640 p.p.s. normal (range from 142 to 1707 p.p.s. available)
Frequency: 5.4 to 5.9 GHz. Variable in 243-KHz steps.
Power Amplifier: Three-cavity klystron, gain about 30 db.
Range System: Digital, split gate auto track.
Range: 600 yards to 32,768 nautical miles. unambiguous.
Rates: Slew rate 240,000 yards/second maximum.
Tracking rate: 20,000 yd/sec
Target acceleration: 600 yards/sec/sec.
Accuracy: Skin mode 5 yds Beacon mode 10 yards
Angle System: Rates: As for antenna
Accuracy: 0.1 mil (S/N greater than 20 db)
Scans: Rectangular, raster, circle or spiral.
Max scan ampl: 2.8 degrees
Major axis of rectangular or raster scans selectable
Direction of rotation of circle and spiral selectable.
Servo bandwidth: 5Hz.
Data Ouput: Range, Azimuth and Elevation at 0.1 second intervals.
To data recorder (magnetic tape 200 bits per inch) …
… and high speed modem (2400 bits per second).
Range, Azimuth and Elevation at 6 second intervals.
Low speed via teleprinter. (one line per 6 seconds)
Displays: 1 x 7 inch A scope.
1 x 5 inch A scope.
1 x 12 inch C scope.

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Block Diagram

Note the RCA computer at the heart of the system
Enlarge
Note the RCA computer at the heart of the system
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