Description
High-Performance 5.9 dBi UHF Base Station Antenna
Heavy-duty 2-bay exposed dipole omnidirectional antenna for 450–470 MHz UHF public safety, repeater, and industrial base station networks.
The Purchase Radios DB404-B is a rugged, high-performance 1-port omnidirectional exposed dipole antenna engineered for demanding UHF base station and repeater applications. Operating across the 450–470 MHz frequency band with a high gain of 5.9 dBi (3.8 dBd) and a full 360-degree horizontal beamwidth, this heavy-duty antenna delivers comprehensive, wide-area coverage for municipal public safety, dispatch centers, and industrial radio networks.
Built with high-grade aluminum radiators and continuous grounding for built-in lightning protection, the Purchase Radios DB404-B is constructed to withstand extreme weather conditions, heavy winds up to 100 mph (161 km/h), and harsh environmental exposure. The antenna features an N Male connector on an end-of-lead pigtail and includes the DB365-OS heavy-duty pipe mounting kit for secure attachment to 1.25" to 3.5" OD round mast pipes.
Key Features & Benefits
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Omnidirectional 5.9 dBi Signal Gain: Delivers 360-degree horizontal coverage and 5.9 dBi (3.8 dBd) gain for reliable, wide-area base station coverage.
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Broad 450–470 MHz UHF Frequency Band: Ideal for commercial two-way radio systems, UHF repeaters, and public safety networks.
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Continuous Grounding Lightning Protection: Direct RF grounding protects connected radio repeaters and electronics from lightning surges and static buildup.
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High Power Handling: Rated for up to 250 Watts maximum input power per port to support high-power transmitters and continuous duty repeaters.
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Includes Heavy-Duty Pipe Mount: Comes complete with the DB365-OS mounting clamp kit for mounting on 1.25" to 3.5" OD round mast pipes.
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N Male Connector: Industry-standard N Male termination on a flexible lead pigtail ensures low insertion loss and a weather-tight coaxial connection.
Specifications
| Attribute |
Details |
| Brand |
Purchase Radios |
| Model/SKU |
DB404-B |
| Product Type |
1-Port Omni Exposed Dipole Antenna |
| Frequency Band |
UHF (450 – 470 MHz) |
| Gain |
5.9 dBi (3.8 dBd) |
| Horizontal Beamwidth |
360° |
| Vertical Beamwidth |
27° |
| Polarization |
Vertical |
| Impedance |
50 Ω |
| VSWR / Return Loss |
1.5:1 / 14.0 dB |
| Max Input Power |
250 Watts |
| RF Connector |
N Male (End of Lead) |
| Radiator Material |
Aluminum |
| Wind Speed Rating |
100 mph (161 km/h) |
| Mounting Kit Included |
DB365-OS Pipe Mount (1.25" to 3.5" OD Pipe) |
| Length / Height |
60 in (1524 mm) |
| Net Weight |
14.11 lb (6.4 kg) |
Compatibility
UHF Repeaters & Base Station Systems
What's Included
| Description |
SKU/Model |
Status |
| Purchase Radios 450-470 MHz Omni Exposed Dipole Antenna |
DB404-B |
Included |
| Heavy-Duty Pipe Mounting Kit (1.25" - 3.5" OD) |
DB365-OS |
Included |
Recommended Accessories
Base Stations & Coaxial Accessories
More Resources
Frequently Asked Questions
What frequency range does the Purchase Radios DB404-B operate on?
The Purchase Radios DB404-B operates across the 450–470 MHz UHF frequency band.
What is the gain rating for the Purchase Radios DB404-B antenna?
The Purchase Radios DB404-B features a high gain rating of 5.9 dBi (equivalent to 3.8 dBd).
What mounting hardware is included with the DB404-B?
The Purchase Radios DB404-B includes the DB365-OS pipe mounting kit, consisting of two heavy-duty clamps designed to fit round mast pipes between 1.25 inches and 3.5 inches outside diameter.
Does the Purchase Radios DB404-B provide lightning protection?
Yes, the Purchase Radios DB404-B features continuous grounding where the radiator and connector inner conductor are grounded to the reflector and mounting bracket for static discharge and lightning resistance.
What connector type does the Purchase Radios DB404-B use?
The Purchase Radios DB404-B uses a standard N Male connector located at the end of a flexible coaxial lead pigtail.
Warranty
1-year manufacturer's warranty.
