OPERATIONAL MODESReceive and Transmit Capability- Located in a remote radio quiet location
- Dark sky location
Location- 5 Mi South of Haswell, Kiowa County, U.S.A.
Go south on Rd 19 until you see the antenna. - Plishner Dish GPS Location:
| | N38° 22′ 51.10″ | W103° 9′ 22.96″ | | N40° 08.900′ | W105° 13.922′ | | 38.380796° | -103.156358° | | Elevation: | 1666? m, 5465? ft | | |
ANTENNA- Antenna Specification
| Parameter | | | | | Frequencies: | | 400 MHz – 2 GHz | | | Diameter: | | 60 feet | | | Antenna Gain: | | 42.5 dBi at 1 GHz (see plot) | | | Beam Width: | | 2.6°/400 Mhz, 0.7°/2 GHz | | | Noise Temperature: | | 1-2db at 400MHz total system | | - | Noise Figure: | | 0.8db at 400MHz w/ 20db LNA | | - | Coverage: | | Full Hemisphere† | | | Slew Rate Max Az/El: | | 40/40 deg/min | | | Slew Rate Min Az/El: | | ??/?? deg/min | | | Azimuth Repeatability: | | ?? min | | | Elevation Repeatability: | | ?? min | | | | † Except at low elevation to North | |
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- Antenna Patterns
- Antenna Feeds
- 400 MHz Feed Horn
- 900 Mhz Feed Horn
- 1420 Mhz Feed Horn
- 1665 Mhz Feed Horn
- LNA from 0.4 GHz to 10 GHz
- Antenna Drive System
- Elev Motor: 3hp, 460vac, 1750 rpm motor.
- Azmith Motor: Synchronous servo motor
- Speed Control: Variable Frequency Controllers
- Brakes: Spring set, electrically released.
- Machine Safeties: End of travel limit switches, Mechanical impact absorbers.
- Shaft Encoders: Quadrature Relative. 1.17 Minute resolution
- Shaft Encoders (Future): Absolute encoder, 12 bit, 5.27 min resolution
- Primary Position Display: Selsyn 2 speed, 6 Minute resolution
- Computer Position Detector: Quadrature encoder + Reference sensors
- Computer Analog Resolution: 12 bit
- Antenna Steering Command Interface
- Manual control station with selector switchs and rate potentiometers.
- PC interface using proprietary software
- PC interface using commercial software
- User Manual available
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Plishner Observatory5001-9999 County Rd E |
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