CompleTech CA140D offset pattern dipole - Frequency range: 135-145 MHz - Gain: 5 dBi - Polarization…

The CompleTech CA140D is a frequency-independent offset pattern dipole antenna engineered for VHF communication systems in the 135-145 MHz band. This 5 dBi gain antenna delivers consistent performance with a VSWR of less than 1.5, ensuring minimal signal reflection and maximum power transfer. The CA140D supports both vertical and horizontal polarization, providing deployment flexibility across diverse operational environments including land mobile radio, public safety networks, and industrial telemetry systems. Constructed with a copper radiator and protected by a UV-resistant ABS/FG PU foam radome, the antenna withstands extreme conditions with an operating temperature range of -40°C to +80°C. Integrated impedance compensation and an RF choke reduce interference and optimize signal integrity. The CA140D features a lightweight design with a wind load of 63 N, making it suitable for pole mounting on diameters from 35-60 mm using an aluminum alloy bracket and stainless steel V-bolts. Multiple connector options—N-, TNC-, and 7/16-female—ensure compatibility with existing RF infrastructure. With a radiation pattern featuring H-plane 3 dB beamwidth of 179° and E-plane 3 dB beamwidth of 74°, this antenna provides reliable coverage in critical communication applications. Ideal for mission-critical installations, the CA140D combines durability, low wind load, and field-proven reliability. Its compact 320 mm length and 700 g weight balance performance with practical deployment requirements.