The ZDA 433 MHz UHF Directional Yagi Antenna is a precision-engineered solution designed to optimize connectivity across the 428–438 MHz spectrum. Leveraging the superior propagation characteristics of the UHF band, this antenna excels at penetrating foliage and urban obstacles to establish stable non-line-of-sight (NLOS) links. It serves as a high-performance backbone for amateur (HAM) radio operations on the 70 cm band, emergency response coordination, and mission-critical industrial telemetry where reliable, long-range communication is non-negotiable.

Available in four configurations, the lineup provides 8 to 14 dBi of focused directional gain with selectable horizontal or vertical polarization to suit specific site requirements. Every unit is validated using an Anritsu S331P analyzer to confirm a VSWR of ≤ 1.5, minimizing return loss and safeguarding radios connected through the standard 50 Ω N-Female interface. Supporting up to 200 W of input power, the antenna maintains a strong ≥ 15 dB front-to-back ratio to reject interference in congested RF environments, all while being housed in a durable aluminum alloy structure rated for reliable, weatherproof operation in the most demanding field conditions

For additional information and complete antenna specifications, download the attached data sheet.