Owner manual

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