AD-18/CF-2512: VHF/UHF dipole-dipole wideband mobile antenna, 20 - 512 MHz

The antenna AD-18/CF-2512 is a "center-fed" type mobile VHF/UHF antenna for the frequency range from 20-512 MHz, mainly intended for use in heavy-duty mobile applications. The specific antenna "center-fed“ design allows installation on various types of mounting. The antenna does not require any ground plane, so the electrical performance (GAIN and VSWR) of the antenna are always the same. The antenna is composed of three main parts: antenna base, lower, and upper radiating element. The antenna base is made of aluminum and durable plastic materials. Inside the base, GPS L1 or L1/L2 antenna can be installed. Big stainless steel spring absorbs the shocks and the vibrations, also, protects the antenna against impacts. Both radiating elements are made of composite materials that enable outstanding strength and roughness even in the hardest conditions of use. The antenna base has four mounting holes equally spaced on a 4.5" (114.3 mm) circle which complies with the NATO standard. The antenna radiator is painted with military green (RAL-6014) two-component UV-resistant paint. Other colors are available on request.


VHF/UHF antenna with N female connector
Combined VHF/UHF (N female) and GPS L1 (SMA female) antenna
combined VHF/UHF (N female) and GPS L1/L2 (SMA female) antenna

Technical specification

Frequency range 20 - 512 MHz
Impedance 50 ohms
VSWR < 3.5
Gain VHF See diagram
Polarization Linear Vertical
Radiation Pattern Omnidirectional
Maximum power 100 W CW
Connector N female


Electrical specifications


Frequency range L1 1575.42 +/- 10 MHz or L1/L2 1575/1227 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. <1.35 dB
Connector SMA female
Mechanical specifications  

Center-fed dipole (VHF); Center-fed dipole (UHF); patch antena with LNA (GPS)

Height 3.200 m
Weight 7.0 kg
Max. high voltage rating 16 kV
Temp. range - in use -50 ... +55 °C
Temp. range - in stock -55 ... +75 °C
Wind velocity 45 m/s (160 km/h)
Color MIL Green

Contact us


TRIVAL ANTENE d.o.o., Gorenjska cesta 25, 1234 Menges, SLOVENIA, EU
TEL: +386-1-8314-396, FAX: +386-1-8313-377, EMAIL:

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