Log-periodic D2T-M 1.5-200MHz

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            broad-band antenna 1.5 to 200MHz 1kw , countinuous covering antenna. The broadband antenna for hf use

1.5 - 200 MHz 1 KW PeP CONTINUOUS COVERAGE ANTENNA

MOD. D2T-M      ( pdf specifications  660 Kb )        " new model "

With new features     With new features    With new features   With new features

Quick mount and dismount, easy to handle, light ...

COMPACT ANTENNA SYSTEM FOR TACTICAL AND FIXED USE

VERY NEW CONCEPTION ANTENNA,

A GIOVANNINI'S "INVENTION ",

REVOLUTIONARY AND PROPERLY FIT FOR MUCH RESTRICTED SPACES AND FOR TACTICAL USE.

QUICK, SIMPLE ASSEMBLY  

  • WEIGHT : ONLY  6 Kos  ( 13 lbs )

  • ELEMENTS : ONLY 6 m.  ( 19.8 ft ) 

  • BOOM : ONLY 2 m.  ( 6.6 ft )

  • ONLY ONE 50 OHMS CABLE

  • 1.5 - 200 MHz CONTINUOUS  COVERING

" NO TUNING "

 

DESCRIPTION:

Nonresonant high-impedence antenna, composed of two dipoles folden fed and dephased by 180°, with noninductive terminating resistor and broad-band RF transformer for feeding with 50 - ohms cable. It shows a bidirectional directivity just starting from 10 MHz with 10-db F/S. When at 21 MHz it gains 3-db with 5-db F/B and 10-db F/S, and progressively it reaches 6-dbd at 30 MHz with 5-db F/B and 20-db F/S. In VHF it shows a daisy-type irradiation lobe. Up to about 15 MHz the signals transmitted and received are attenuated according to the graphic yield. 

SYNTHETICALLY THE BEST QUALITIES OF THIS ANTENNA ARE: MUCH REDUCED SIZES, LIGHT WEIGHT, CONTINUOUS COVERING ON TRANSMISSION AND RECEPTION FROM 1.5 TO 200 MHz, 1 KW PeP, FEEDING WITH ONLY ONE 50-OHMS RF CABLE WITH NO HELP OF REMOTE CONTROL IN 1.5 - 200 MHz SPECTRUM TO CHANGE FREQUENCY. 

 

D2T-M         MECHANICAL-ELECTRICAL FEATURES
CONTINUOUS COVERING 1.5 - 200 MHz
MAX. APPLICABLE POWER 1.5 - 80  MHz 1 KW PeP
                           "                   80 - 200 MHz 500 W PeP
CONTINUOUS BEARING, RTTY,CW,etc. 1.5-2.5 MHz 100 W
                           "                                      2.5-4    MHz 200 W
                           "                                         4-10  MHz 400 W
                           "                                       10-30  MHz 500 W
                           "                                         VHF 250 W
SWR SEE GRAPH
CONNECTOR N FEMALE
BOOM 2m (6.6ft)
ELEMENTS 6m (19.8ft)
TURNING RADIUS 3.6m (11.8ft)
WEIGHT 6  kg  (13 lbs)
MAX. SPEED OF WIND km/h 161 (100mph)
               "                     WITH 3mm ICE SLEEVE 90 km/h
SURFACE AREA 0.45 m2 (4.9sq.ft)
EMPLOYMENT TEMPERATURE 1.5-10   MHz -30°C - +25°C
                            "                        10-200  MHz -30°C - +40°C
STORAGE -40°C - +85°C
SHIPPING Wt. 16  kg  (35 lbs)
WOOD CASE m m 1.05 x 0.15 x 0.15  (3.44 x 0.49 x 0.49 ft)

1,5-15.jpg (32542 byte)

SWR 1.5 - 15 MHz

15-30.jpg (37082 byte)

SWR 15 - 30 MHz

30-200.jpg (63831 byte)

SWR 30 - 200 MHz

d2t gain.jpg (32659 byte)

Gain

d2t yield.jpg (34197 byte)

Yield

d2t-t2fd az 25mhz diff..jpg (56870 byte)

25 MHz lobe D2t&t2fd

d2t az 10 mhz.jpg (45625 byte)

10 MHz lobe

d2t az 25 mhz.jpg (44439 byte)

25 MHz lobe

                                          

d2t az 140 mhz.jpg (44825 byte)

140 MHz lobe

Click on the image to enlarge it.

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