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
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Watts 2019 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