V/UHF Whip Antenna - 18-12
The 18-12 antenna is a high performance, broadband whip antenna designed for specific use over the frequency band 30 MHz to 400 MHz. It is designed predominately for use on helicopters. The 18-12 antenna employs a whip element primarily for use at VHF together with a parasitically excited sleeve monopole designed for operation over the UHF band. Decoupling techniques are incorporated to avoid deleterious interaction and preserve high performance throughout all operating bands. A frequency dependant matching network is fitted to ensure acceptable low band VSWR with minimum loss of gain.
- Lightweight
- Height 1067mm (42 inches)
- Gain ≤ -12dBi at 30MHz
- Helicopter applications
- TNC connector
Specifications
- Electrical Specs
- Mechanical Specs
- Standard Specs
Electrical Specs
- Minimum Frequency
- 30
- Maximum Frequency
- 400
- Impedence
- 50
- Return Loss VSWR
- 30 to 88 MHz: 2.5:1
- Gain
- 30 to 88 MHz: -12 dBi to -6 dBi
- Polarization
- Vertical
- Radiation Pattern Azimuth
- Omnidirectional
Mechanical Specs
- Full Dimensions LxWxH mm
- 122 x 94 x 1067
- Mass kg
- 1.13
- Connector Type
- TNC Female
Standard Specs
- Altitude ft
- 15000
- Continuous Operating Temperature Min - C
- 40
- Continuous Operating Temperature Max C
- 55
- Vibration
- MIL-E-5400T, Curve IIIb
- Standards
- MIL-STD-810
Get in touch
Chelton Limited, Marlow HQ
The Chelton Centre
Fourth Avenue
Marlow
Buckinghamshire
SL7 1TF
United Kingdom
CAGE Code: U1907
Fourth Avenue
Marlow
Buckinghamshire
SL7 1TF
United Kingdom
CAGE Code: U1907
