L-Band Blade Antenna for DME & ATC Transponder

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This 21-48-06 is an “all-metal” L-band blade antenna of low height having an omnidirectional radiation pattern suitable for aircraft DME and ATC Transponder use.

Electrical design comprises a susceptance corrected sleeved unipole, grounded via a short circuit stub for lightning protection and fed via an N-type female RF connector. This antenna has loss-less matching and thus high radiation efficiency.

Small Cross-sectional Profile and Low Height
Low Drag and Light Weight
Fully Sealed and designed to meet DO160 Environmental Conditions
Excellent Omnidirectional Radiation Pattern
N-type Female Connector
Grounded for Lightning Protection
High Power Capability
Rugged aluminum construction

	21-48-06
Model #	21-48-06
Brand	Cooper Antennas

Frequency	960 - 1220 MHz
Gain	+3dBi
VSWR	≤ 2.0:1 960 - 1220 MHz
Impedance (nominal)	50 Ohms
Power	200 Watts average 4kW peak
Polarization	Vertical
Radiation Pattern	As “stub” antenna
Antenna RF Connector	N Female

Overall Height	2.36 Inches (59.9mm)
Weight	0.363lbs (0.165kg) max
Fixing Plate	5.3 inches (134.6mm) by 1.8 inches (45.7mm)
Fixing Holes	6 x Ø 0.25 inches (6.35mm) equi-spaced on a 5 inches (127.0mm) P.C.D.