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DDC230 & DDC330 Series
Directional Delta Antenna Series: DDC230 & DDC330

Rev : 01 | Rev date : 06 Jan 2022

DDC Series Antennas 
Directional delta antennas are designed for coverage over short to medium distances and exhibit a directional, high angle radiation pattern.
They are available with or without a support mast and are supplied complete with the appropriate balun and termination.
The DDC antennas operate on the same principle as the model DC antennas, however the radiating elements are rotated to provide a directional azimuth radiation pattern.  A broadband splitter that is mounted at the base of the mast distributes the signal to each element via buried coaxial cables.  The input connector is N-Type 50 ohm.
 

FEATURES / BENEFITS

  • Short to medium range operation
  • Suitable for NVIS operation
  • Broadband– no tuning units required
  • Suitable for frequency-agile transmission
  • Directional azimuth radiation pattern


Model DDC230 shown

Technical features

Electrical Specifications

ModelDDC230DDC330
Frequency Range MHz2-303-30
Gain dBiRefer chart
PolarizationHorizontal
Elevation Radiation PatternRefer plots
Azimuth Radiation PatternDirectional, refer plots
VSWR<2.0:1
Maximum Power Rating kW0.25 average, 1.0 PEP
or
1 average, 4.0 PEP
Input ConnectorN-type socket
Impedance Ω50

Mechanical Specifications

Mast Height m (ft)20 (65.6)14 (46)
Antenna Width m (ft)41 (134.52)29 (95)
Mast Guy Radius m (ft)12 (39.4)9 (29.5)
Wind Survival Rating (No ice) km/h (mph)230kmh (143mph) *See Note 1 to 3

Material

Material - RadiatorsMarine grade stainless steel

PACKAGING INFORMATION

Shipping informationPacked weight, kg (lb)Packed size, cm (in)
DDC23040 (88) excludes mast and balun100 x 70 x 30 (39-3/8" x 27-1/2" x 11-13/16") excludes mast and balun
DDC33035 (77) excludes mast and balun100 x 70 x 30 (39-3/8" x 27-1/2" x 11-13/16") excludes mast and balun

External Document Links

Notes

Wind ratings are calculated to the following Australian standards:
1. AS1664-1975 - SAA Aluminum Structures Code (which gives a safety factor of 65% to material yield)
2.    AS1250-1981 - SAA Steel Structures Code (which gives a safety factor of 65% to material yield)
3. AS1170-1981 - Part 2 - SAA Loading Code, Wind Forces