World Leader in Advanced ILS Antennas

Model 106 End-Fire

Model 106 EFGS End-Fire Glide Slope Antenna Systems

Watts Antenna Company

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 & neither should you. Click the Airport Improvement Magazine link button below, read the article regarding one of our installed End-Fire Antennas & you will see why!
End-Fire Antennas Can 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.

ANOTHER TOUGH SITE SOLUTION BY WATTS ANTENNA COMPANY 


What About Improvements to Airport Efficiency?

The End-Fire Critical Area Size Is Substantially Smaller & Can Mean More Operations Per Hour!

End-Fire Glide Slope Antenna Systems

The Model 106 – For Category I ILS

CATEGORY I INSTRUMENT LANDING SYSTEM
WHEN NO ONE ELSE CAN DO IT!

MODEL 106
END-FIRE GLIDE SLOPE ANTENNA

FRONT ANTENNA AND A PROVEN FRANGIBLE SUPPORT STRUCTURE

 
 

 

 

THE EF-9 INTERFACE UNIT PROVIDES POWER DISTRIBUTION
AND MONITORING FOR THE ANTENNA SYSTEM

 
 

SPECIFICATIONS

Frequency Range: 329 to 335 MHz
Excitation:
CSB
SBO
CLR
4.0 W (typical)
100 to 500 mW (as required)
400 mW to 2.5 W (as required)
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: 6.60 cu. ft. (186.9 liters) (approximate)
with specified dielectric coaxial cables
Dehydrator Run Time: 7.5 minutes (Andrew MT300 only)
1.4 hours in a 24-hour period (Andrew MT300 only)
Dehydrator Idle Time: 2.1 hours between cycles (Andrew MT300 only)
22.6 hours in a 24-hour period (Andrew MT300 only)
Radiation Pattern:

Main Antenna

Clearance Antenna

-2 dB beamwidth > 5 deg. azimuth
-10 dB beamwidth < 20 deg. azimuth
Front to back ratio > 12 dB

Maximum lateral radiation nominally -19 degrees and 11
degrees relative to the runway centerline 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) @ 0.78 amp
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
WWW.WATTSANTENNA.COM
EMAIL: INFO@WATTSANTENNA.CO
M

 

Watts 2021 Product Brochure
Model 106  Downloadable  Hi-Resolution Brochure
System Layout & Construction:   Drawing and Notes
Complete Model 106 EFGS Section 9: Installation and Tune-up from Instruction Book
Download Model 106 Instruction Book
Download Model 106 Optimization Supplement
Download the “Items Needed But Not Supplied” Supplement