Giovannini Elettromeccanica                                                       Antenna Systems for HF  -  Commercial  Products

         HF Commercial Antennas&Masts

  Mod. D2T , HF/VHF Broad Band Directional Antenna, 1.5 to 30 Mhz , 1 Kw PeP

Mod. D2T 1.5 to 200 MHz

Download D2T documents:

D2T                                specificatios

D2T  CQ            USA      Review

D2T  RSGB       UK         Review

D2T  R&K          IT           Review

D2T  EF             IT           Review

SWR 1.5 - 15 MHz             SWR 15 - 30 MHz

SWR 30 - 200 MHz            SWR 50 MHz

SWR 140 MHz               Yield              Gain

Lobe Az. 10 MHz           Lobe Az. 25 MHz

Lobe Az. 140 MHz         Lobe D2T Vs. T2FD

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REVOLUTIONARY DESIGN - SMALL SIZE - IDEAL FOR RESTRICTED SPACES

• 1.5 - 200MHz CONTINUOUS COVERAGE

• NO TUNING REQUIRED

• USES ONLY ONE 50 OHM COAXIAL CABLE

• BOOM: 2m (6.6ft)

• ELEMENTS: 6m (19.8ft)

• WEIGHT: 6kg (13lb)

DESCRIPTION:
The D2T is a non-resonant high-impedence antenna, composed of two folded dipoles dephased by 180°. It has a non-inductive terminating resistor and broadband RF transformer fed with a single 50 Ohm cable. The D2T is bi-directional starting from about 10MHz with 10dB F/S. At 21MHz it gains 3dB with 5dB F/B and 10dB F/S, and progressively it reaches 6dB at 30MHz with 5dB F/B and 20dB F/S. At VHF it shows a daisy-type radiation lobe. Up to about 15MHz both the transmitted and received signals are attenuated (see the ‘Yield’ graph).
 

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