SUPPLYING HIGH PERFORMANCE FLIGHT INSTRUMENTATION, RF/MICROWAVE ASSEMBLIES,
POWER AMPLIFIERS, IFF AND DATA ACQUISITION SYSTEMS FOR SEVERE ENVIRONMENTS.

DESCRIPTION
The Ultra Electronics Herley P/N 8201 Radar Altimeter Antennas are designed to be used in conjunction
with the Kratos-Lancaster 4500, 4501 and 4502 series Radar Altimeters.

FEATURES
• Frequency range of 4.2 to 4.4 GHz
• High temperature operation
• Small size and light weight
• Ease of installation
• Easily contoured or shaped

ELECTRICAL
• Frequency Range: 4.2 to 4.4 GHz
• VSWR:
1.8:1 Max at 4300 MHz
2.2:1 Max from 4275 to 4325 MHz
3.0:1 Max 4250 to 4275 AND
4325 to 4350 MHz
• Gain: 9 dbi min
• Beamwidth: 30° minimum 3 db full angle for E and H planes
• Isolation: 85 db minimum at 24 inch spacing, center to center
• Power Handling: 1.0 KW peak
• Side Lobes: below 30 dB

MECHANICAL
• Connector: TNC Female per MILC-39012 interface dimensions
• Weight: 8 oz. maximum
• Mounting: Curved 6.5” radius denotes -1 antenna as shown A flat mounting surface denotes -2 antenna, not shown
Curved 120MM radius denotes -3 antenna, not shown
• Finish: Tin plate back surface per MIL-T-10727. Radome and edge surfaces painted with white polyurethane enamel.

ENVIRONMENTAL
• Altitude: 40,000 ft
• Salt Fog: MIL-STD-810 method 509 procedure 1
• Shock: 15 G’s
• Vibration: 8.2 grms
• Operating Temperature: 300° F+
PRODUCT NUMBERS
• 8201-1 – Curved with 6.5” radius as shown in outline
• 8201-2 – Flat mounting surface
• 8201-3 – Curved with 120mm radius