HF Dipoles Centre Fed Delta

These antennas are most suited for short to medium range working. When suspended about a quarter wave above ground level radiation is predominantly upwards, giving some omnidirectional coverage using skywaves. As the height above ground level is increased to a half wave, the radiation pattern tends to a figure of eight
Mechanical Specification
| Antenna Elements | 7/0.44" (7/1.118rnm) or 7/0.36" (7/0.914mm) hard drawn copper magnesium strand. |
| Insulators | Carbon loaded polypropelene. |
| Spreaders | Antenna spreaders used on FDA/1 are fibre-gjass. Feed Iine spreaders are porcelain or fibreglass as appropriate. |
| Baluns | SMC can supply a wide range of matching balun transformers for all combinations of input impedances and powers. |
General Specification
| Bandwidth: | +/- 2% of centre frequency |
| VSWR | Better than 1.5 : 1 |
| Power: | Up to 2kW |
| Impedance: | 50 ohms |
| Polarisation: | Horizontal |