VHF Whip Antenna – 21-4
VHF Whip Antenna – 21-4
The 21-4 Series antennas are linearly polarised, monopole antennas with wide band frequency characteristics intended for general communication and homing applications. Being of semi-rigid form, it is suitable for external fitting upon helicopters and fixed wing aircraft with a performance up to 350 kts EAS, and other similar applications. The antenna can be installed by single hole fixing and allows orientation of the coaxial connector through 360°. The antenna can be mounted true or raked using the angled spacers provided.
- ✔ General Purpose Whip Antenna
- ✔ TNC and BNC options available
- ✔ Straight or raked
- ✔ Several bandwidth options available
Specification
118
Minimum Frequency
137
Maximum Frequency
50
Impedence
2.5:1 max (raked configuration)
Return Loss VSWR
≤ +2 dBi (avg)
Gain
Vertical
Polarization
Omnidirectional
Radiation Pattern Azimuth
As per Stub
Radiation Pattern Elevation
23 x 23 x 562
Full Dimensions LxWxH mm
0.14
Mass kg
BNC Female or TNC Female
Connector Type
25000
Altitude ft
45
Continuous Operating Temperature Min - C
70
Continuous Operating Temperature Max C
DO-160C Section 8 Curve Y
Vibration
DO-160
Standards