EhubAmerica DEPM450 Replacement UHF Helical Antenna 400-470 MHz for Motorola CP200D

The EhubAmerica DEPM450 is a helical UHF replacement antenna engineered specifically for Motorola portable two-way radios operating in the 400–470 MHz band. Built around a urethane sleeve and ABS cap construction, it delivers a robust yet lightweight form factor that withstands the rigors of daily field use. With omnidirectional, vertically polarized radiation and unity gain across its full operating range, the DEPM450 provides consistent, reliable coverage in all directions without favoring any particular azimuth—making it well suited for public safety, facilities management, hospitality, and commercial operations where dependable radio communication is essential. Its stud monopole connector ensures a secure, low-profile mating to compatible Motorola radio bodies, and the 170 mm overall length keeps the profile manageable without compromising antenna efficiency.

Key features & benefits

• 400–470 MHz UHF Coverage — Tuned to a 460 MHz center frequency with a full operating span of 400–470 MHz, the antenna covers the most widely used UHF land-mobile frequencies without requiring retuning or adapters.
• Omnidirectional Vertical Polarization — The vertically polarized, omnidirectional radiation pattern ensures uniform signal propagation in all horizontal directions, keeping communication consistent whether a user is stationary or moving through a facility.
• Unity Gain Design — A unity gain specification means the antenna radiates efficiently across the entire band without artificially narrowing the beam or creating coverage nulls, supporting reliable link quality at the radio's rated transmit power.
• Low VSWR for Efficient Power Transfer — A VSWR of less than 2.0 across the operating band minimizes reflected power, protecting the radio's PA stage and ensuring that the majority of transmitted energy reaches the antenna rather than being lost as heat.
• 50-Ohm Matched Impedance — Standard 50-ohm impedance matches directly to the radio's RF output stage, requiring no additional matching network and maintaining signal integrity across the full UHF range.
• Durable Urethane Sleeve and ABS Cap — The urethane sleeve resists cracking, flexing fatigue, and chemical exposure encountered in professional environments, while the ABS cap provides a hard, impact-resistant termination that maintains the helical element's alignment.
• Stud Monopole Connector — The stud monopole screw connector provides a firm, vibration-resistant connection to compatible Motorola radio bodies, reducing the risk of intermittent contact during active use in the field.
• Compact 170 mm Form Factor — At 170 ± 3 mm in total length, the antenna keeps a manageable profile that reduces snagging and fatigue during extended wear without sacrificing RF performance.