Full technical specifications for the Deity BF1 antenna, along with its measured polar patterns. The BF1 is a passive, linearly polarized broadband antenna covering 470 MHz to 1 GHz.
Specifications
| Antenna type | Passive antenna |
| Frequency range | 470 MHz to 1 GHz |
| Input impedance | 50 Ω |
| Standing wave ratio | Less than 1.5 (550 MHz to 750 MHz) |
| Gain | 2.2 dBi (average) |
| Antenna polarization | Linear |
| Material | Composite fiberglass material |
| Installation interface | 1/4 inch threaded mounts |
| RF interface | BNC |
| Size | 190 x 118 x 14 mm |
| Weight | About 95 g (excluding cable) |
Polar Patterns and Polarization
The BF1 behaves as an omnidirectional antenna: wherever your transmitters are on set, the antenna will see them. There is some rejection off the top and bottom of the antenna, but in practice you can treat it as an omni.
The top and front views show broad, near-circular coverage across the horizontal plane, while the side view shows the figure-eight nulls above and below the antenna.