DP 4/...
Centre-Fed Folded Dipole for the 80 MHz Band
DESCRIPTION
- Single, 0 dBd folded dipole incorporating a balun optimized for wide bandwidth and accurate matching.
- The entire balun unit and feeder terminations are completely sealed in a polythene moulding ensuring permanent waterproof connections.
- The dipole element, the supporting boom and the adjoining metal castings have been constructed in high quality aluminium alloys to prevent corrosion. All metal parts are DC-grounded.
- These antennas may be arranged in a variety of ways to produce higher gain, directional lobes or interference cancellation, and suitable matching harnesses are available.
- The antenna is supplied complete with clamp for mounting on 30 - 58 mm diameter mast tubes.
ORDERING DESIGNATIONS
| TYPE | PRODUCT NO. | FREQUENCY |
|---|---|---|
| DP 4/l | 120000017 | 66 - 77 MHz |
| DP 4/h | 120000016 | 75 - 88 MHz |
SPECIFICATIONS
| ELECTRICAL | |
|---|---|
| MODEL | DP 4/... |
| ANTENNA TYPE | Folded dipole |
| FREQUENCY | DP 4/l : 66 – 77 MHz DP 4/h : 75 – 88 MHz |
| IMPEDANCE | Nom. 50 Ω |
| RADIATION | Omnidirectional |
| POLARIZATION | Vertical or horizontal |
| GAIN | 2 dBi 0 dBd |
| BANDWIDTH | 11 - 13 MHz |
| SWR | ≤ 1.5 |
| MAX. POWER | 150 W |
| ANTISTATIC PROTECTION | All metal parts DC-grounded (Connector shows a DC-short) |
| MECHANICAL | |
| TEMP. RANGE | -25°C → +60°C |
| CONNECTOR | 3 m tail of RG 213 terminated with type N-female connector |
| WIND SURFACE | 0.12 m² |
| WIND LOAD | 152 N @ 160 km/h |
| COLOUR | “Aluminium” |
| MATERIALS | Aluminium and environmentproof plastics |
| DIMENSIONS | Dipole element dia: 19 mm Boom dia. : 31.8 mm Boom length : Approx. 1.4 m Element length : Approx. 1.8 m |
| WEIGHT | Approx. 4.0 kg |
| MOUNTING | On 30 - 58 mm dia. mast tube |
TYPICAL GAIN AND SWR CURVES
TYPICAL RADIATION PATTERN (E-PLANE)
TYPICAL RADIATION PATTERN (H-PLANE)
