VHF/UHF/L-Band Antenna

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VHF/UHF/L-Band Antenna

The 21-50-102 is a high speed passive blade antenna providing full VHF, UHF and L-band performance in a double raked, low RCS design. Intended as a bolt on replacement for existing UHF/L-band and VHF/ UHF/L-band antennas, this antenna is built using a high temperature resin/glass composite radome encapsulating a wide band, specially contoured radiating element. A high isolation diplexer is built into the machined aluminium base which is specifically designed to withstand direct lightning strike attachment. Lightning and P-static protection is further enhanced by all elements being DC grounded.

Swept back blade
Isolated V/UHF and L-band outputs
Suitable for Mach 2+
Gain in UHF and L-band similar to stand-alone blades
Excellent Omni pattern thru band
Drop on replacement for existing UHF/L-Band Blades
Designed to MIL-STD-810 environmental conditions

	21-50-102
Model #	21-50-102
Brand	Cooper Antennas

Frequency	108-174 MHz 225-400 MHz 960-1220 MHz
Gain	118 MHz -2 dBi 174 MHz ≥ -1 dBi 225-400 MHz ≥ +1 dBi average 960-1220 MHz ≥ 0dBi average
VSWR	108 - 174 MHz ≤ 2.5:1 225 - 375 MHz ≤ 2.5:1 375 - 400 MHz ≤ 2.7:1 960 - 1220 MHz ≤ 2:1 1000 - 1100 MHz ≤ 1.8:1
Impedance (nominal)	50 Ohms
Power	VHF/UHF : 45 Watts CW L-Band : 2 KW Peak at 0.004 duty cycle
Isolation	Between V/UHF and L-band (bi-directional) ≥ 50 dB
Radiation	Omni-directional in azimuth within ± 2.5 dB. Similar to stub in elevation.
Antenna RF Connector	N Female L-band TNC Female V/UHF