The UTRA4301S3NW-001 is a patented Ultra Phantom single-band omnidirectional antenna designed for outdoor and indoor mobile radio applications. Operating in the 430–490 MHz frequency range, it delivers a maximum gain of 3.6 dBi with vertical polarization and a low-angle radiation pattern that outperforms traditional 3 dBi whip antennas in most scenarios. The antenna features a nominal impedance of 50 O, average VSWR of =2.5:1, and handles up to 100 W at 25 °C ambient. Housed in a compact low-profile design measuring 35.5 mm diameter × 86.3 mm height and weighing 163.3 g, it mounts via the industry-standard NMO socket compatible with all TE magnetic, trunk lid, and whole mounts. Rated IP67 for harsh environments, it operates reliably from -45 °C to +85 °C, survives winds up to 282 km/hr, and is RoHS-compliant. Ideal for public safety, transportation, utilities, military mobile, and fixed radio applications where durability and performance in challenging conditions are critical.