Watts Antenna Company’s Model 105 EFGS Antennas
For Category I/II ILS
HAVE YOU BEEN TOLD THE “SAME OLD STORY”?
Have you been told that you cannot get ILS service at your airport because the site is too difficult? Throw that old report away! We don’t believe it …and let us tell you why!
End-Fire antennas offer numerous benefits over conventional image systems:
- Significant Cost Savings by Avoiding Expensive Ground Plane Conditioning.
- Provide ILS Service where Previously not Possible or Cost Effective due to Terrain.
- Proven Frangible Low-Profile Design Permitting “Next to Runway” Installation.
- Save the Wetlands or Avoid High Wetland Relocation Costs.
- Waterside Installations Since the Signal is not Degraded by Tidal Variations.
- Precision Glide Path Guidance is Achieved with Narrow Lateral Radiation
- Patterns that Reduce Multi-path Signals from Buildings or Mountainous Terrain.
What About Improvements to Airport Efficiency?
The End-Fire Critical Area Size Is Substantially Smaller and Can Mean
More Operations Per Hour!
End-Fire Glide Slope Antennas:
The Model 105 – For Category I/II ILS
CATEGORY I/II INSTRUMENT LANDING SYSTEM ANTENNAS
WHEN NO OTHER ANTENNAS CAN DO IT!
MODEL 105
END-FIRE GLIDE SLOPE ANTENNA
WHEN NO OTHER ANTENNAS CAN DO IT!
MODEL 105
END-FIRE GLIDE SLOPE ANTENNA
A PROVEN FRANGIBLE SUPPORT STRUCTURE
(Rear Antenna Shown)
THE EF-9 INTERFACE UNIT PROVIDES POWER DISTRIBUTION AND
MONITORING FOR THE ANTENNA SYSTEM
(Designed to be Easily Adapted to any Transmitter and Monitor Electronics)
SPECIFICATIONS
|
Frequency Range: |
329 to 335 MHz |
| Excitation: CSB SBO CLR |
4.0 W (typical) 200 to 500 mW 400 mW to 2.5 W |
| Input Impedance: | 50 ohms |
| VSWR: Main Antenna Clearance Antenna |
1.25:1 2.0:1 |
| Pressurization: | Dry air, constant, 3 to 9 PSI nominal, stable pressure preferred |
| System Air Volume: | 7.70 cu. ft. (218.0 liters) (approximate) with specified dielectric coaxial cables |
| Dehydrator Run Time: | 8.7 minutes to pressurize (Andrew MT300 only) 1.5 hours in a 24-hour period (Andrew MT300 only) |
| Dehydrator Idle Time: | 2.4 hours between cycles (Andrew MT300 only) 22.5 hours in a 24-hour period (Andrew MT300 only) |
| Radiation Pattern:
Main Antenna Clearance Antenna |
-2 dB beam width > 13 degrees azimuth
-10 dB beam width < 30 degrees azimuth Front to back ratio > 12 dB Maximum lateral radiation nominally -19 degrees and 11 degrees relative to the runway center-line with a null in the region of main antenna maximum radiation Front to back ratio > 12 dB |
| Glide Angle: | 2.5 to 4.0 degrees relative to horizontal (adjustable) |
| Path Width: | 0.70 degree, (nominal) |
| Power Requirement: | 22-30 VDC, (nominal 28 VDC) @ 0.98 amp maximum |
| Duty Cycle: | Continuous, unattended |
| Outdoor Equipment: Temperature Relative Humidity Altitude Wind Ice Loading |
-50 to +70 degrees C 5 to 100 percent 0 to 10,000 feet 0 to 100 mph 1 inch radial clear ice |
| Indoor Equipment: Temperature Relative Humidity Altitude |
-10 to +50 degrees C 5 to 90 percent 0 to 10,000 feet |
WATTS ANTENNA COMPANY
70 North Plains Road – Suite H
The Plains, Ohio 45780-1156
USA – Manufacturing Facility
Phone: +1.740.797.9380; Fax: +1.740.797.9787
EMAIL: INFO@WATTSANTENNA.COM
Model 105 Downloadable Hi-Resolution Brochure
System Layout & Construction: Drawing and Notes
Complete Model 105 EFGS Section 9: Installation and Tune-up from Instruction Book
Download Model 105 Instruction Book
Download Model 105 Optimization Supplement
Download the “Items Needed But Not Supplied” Supplement