D2221 Dipole Antenna
The D2221 Dipole Antenna (225–400 MHz) provides 360° omni-directional UHF coverage with vertical polarization for reliable military and naval communications.
Description
The TACO D2221 Dipole Antenna delivers exceptional performance for UHF military, naval, and defense communications across the 225–400 MHz band. Featuring four vertically stacked dipoles, the antenna supports simultaneous multi-frequency operation, providing consistent 360° omni-directional coverage with vertical polarization. Its precision-engineered design ensures stable impedance and minimal signal distortion, even under dynamic environmental conditions. Constructed from durable, corrosion-resistant materials and enclosed in a rugged fiberglass radome, the D2221 offers outstanding longevity and reliability in shipboard or fixed installations. Ideal for mission-critical and multi-channel communications, it ensures dependable connectivity where performance and resilience matter most.
| General Specifications | |
|---|---|
| Model Name | D2221 |
| Part Number | 993407 |
| Antenna Type | Dipole Antenna |
| Radiation Pattern | Omni-Directional |
| Enclosure | Wound Fiberglass Radome |
| Colour | Olive Drab (RAL 6022) |
| NSN Number | 5985-01-315-5472 |
| Compliances | RoHS, REACH |
| Markets | Military & Defence, Aviation & Air Traffic |
| Electrical Specifications | |
| Frequency (MHz) | 225-400 |
| Frequency Band | UHF |
| Gain - (dBi) | 1.5 |
| Polarization | Vertical |
| VSWR (Max) | 2:1 |
| Impedance (Ω) | 50 |
| UHF Max Input Power (W) | 250 |
| Isolation - Min. (dB) | 30 |
| HPBW (°) | 75 |
| Mechanical Specifications | |
| Length - in (mm) | 169.4 (4303) |
| Weight - lbs (kg) | 17 (7.7) |
| Element Configuration | UHF-UHF-UHF-UHF |
| Number of Elements | 4 |
| Connector Type | N-Type (Female) |
| Number of Connectors | 4 |
| Environmental & Structural Specifications | |
| Operating Temperature - °F (°C) | -40 to 158 (-40 to 70) |
| Wind Loading Area - ft² (m²) | 2.12 (.19) |
| Wind Loading Area with ½" Ice - ft² (m²) | 3.37 (.31) |
| Bend Moment (ft-lbs) | 359.1 |
| Bend Moment with ½" Ice (ft-lbs) | 147.9 |
| Survival Rating No Ice - mph (kph) | 100 (160) |
| Mounting Specifications | |
| Mount Type | Mount A - Clamp Mount |
| Mast OD - in (mm) | 3 (76) |
Model Variants
- D2221-M2G Shipboard Antenna – Shipboard Model with Military Double Mast Clamp (225-400 MHz)
- D2221-S Sectional Dipole Antenna – Two-Piece Sectional Model (225-400 MHz)
