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AD-457
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AD-457

Price: 1300,00 €

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457-01457-02457-03457-04457-05457-06

AD-457 - is the new full-size antenna for 20, 15 and 10 meters bands. Effective tool for HF radiosport - Contesting and DXing.

It took a lot of time and effort to simulate and optimize the parameters of the antenna, choose the best materials, and test it on the air.

  • 4 elements for 20 m, 5 elements for 15 m and 7 elements for 10 m.
  • Boom length -  10.3 m.
  • Direction patterns of AD-457 are clearly expressed on each band.
  • High gain, deep suppression of lateral and rear petals.
  • Low SWR in all bands. Full-size elements and a carefully selected optimal distance between them provide a wide band and high efficiency of the antenna.
  • Vibrators are connected by a hard line of pipes. Feeding the antenna - one 50-ohm coaxial cable.
  • Delivery set includes antenna to mast mounting plate with U-bolts, Т-stand for boom guying with 4 turnbuckles.
  • Shipped in two boxes (2005x220x160mm). Weight is 48 kg.

It is recommended to connect coaxial cable through BALUN 1:1.

AD-457 specification

Parameter/band 20 15 10
Elements qty 4 5
7
Frequency range, MHz 14.000-14.350 21.000-21.450 28.000-29.000
SWR in frequency range 1.2 - 1.00 - 1.3 1.1 - 1.00 - 1.2 1.2 - 1.00 - 1.5
Gain @22м, dBi 14.9 15.5 16.6
Net Gain vs dipole@22m dBd 7.2 7.8 8.9
Front to Back, dB 16 - 20 - 17 24 - 25 - 22
18 - 21 - 18
Boom lenght, mm 10300
Max element length, mm 11000
Turning radius, mm 7150
Weight, kg 47
Wind surface area, m2 1.2
Max CW input power, kW 5
Max wind speed 35 m/s
Acceptable reduction unit is similar to AlfaSpid RAK, BIG-RAK.




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Last Updated: Sunday, 27 November 2022 02:25