The antenna AD-27/V120-3108 is a wideband monopole mobile VHF antenna intended for frequency range from 30 to 108 MHz. The antenna is designed for maximum possible gain and acceptable low VSWR with extreme short radiating element. The antenna is therefore intended for use on smaller vehicles, motorcycles, etc. The antenna is composed of two parts: the antenna base and the radiating element. The antenna base is made of aluminium and durable plastic materials. Inside the base is matching transformer unit for the VHF radiator and (optional) GPS antenna. Powerful biconical spring protects the antenna against impacts. The radiating element is made of composite materials enable outstanding strength even in hardest conditions of use. The antenna base has four mounting holes equally spaced on a 4.5" (114.3 mm) circle which complies with US army standard (AS-1729). Different base plate dimensions are also available on request. The antenna is completely painted with military green (RAL-6014) two-component UV resistant paint.
Versions
Technical specification
| Electrical specifications - VHF/UHF | |
|---|---|
| Frequency range | 30 - 108 MHz |
| Impedance | 50 ohm |
| VSWR | < 3.5 |
| Gain | (see diagram) |
| Polarization | VERT. |
| Max. power | 100 W CW |
| Connector | N female (BNC female optional) |
| Electrical specifications - GPS | |
|---|---|
| Frequency range | L1 1575.42 +/- 10 MHz |
| Impedance | 50 ohm |
| VSWR | < 2 |
| Polarization | RHC |
|
LNA Gain / Voltage / Current
|
18 dB (+/- 2 dB) / 5 V / 19 mA 16 dB (+/- 2 dB) / 3.5 V / 13 mA 10 dB (+/- 2 dB) / 2 V / 7 mA |
| Noise fig. | <1.5 dB |
| Connector | SMA female |
| Mechanical specifications | |
|---|---|
| Design | End-fed whip (VHF) |
| Height | 1.2 m |
| Weight | 2 kg |
| Max. high voltage rating | 16 kV |
| Temp. range - in use | -40 ... +75 oC |
| Temp. range - in stock | -55 ... +75 oC |
| Wind velocity | 55 m/s (200 km/h) |
| Color | MIL Green |
