PROCOM A/S

DP 4/...

Centre-Fed Folded Dipole for the 80 MHz Band

Replaced by S.1

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 Replaced by S.1 66 - 77 MHz
DP 4/h 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
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TYPICAL GAIN AND SWR CURVES

TYPICAL RADIATION PATTERN (E-PLANE)

TYPICAL RADIATION PATTERN (H-PLANE)

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SpecificationsIn PDF Format
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PROCOM A/S
Smedetoften 12 • DK-3600 Frederikssund • Denmark • Phone: +45 48 27 84 84 • E-mail: info@procom.dk • VAT No.: DK 87 92 82 17 • Owner of Skymasts Antennas