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MegActiv MA305 Active Antenna

This noise-free antenna, which is produced according to the highest standards, covers the frequency range between 9 kHz and 300 MHz
1 piece | 179,99 € €/piece This item is not on stock and has to be re-ordered. Weight: 0.75 kg

This product is discontinued in 2018 and replaced
by the successor
MegActiv MA305FT.

MegActiv MA305 Active Antenna

With the MegActiv 305 we expand our choice of USB-powered E-field active antennas. The MegActiv 305 close the gap between the Boni-Whip and the GigActiv GA3005 E-Field Antennas. This noise-free antenna, which is produced according to the highest standards, covers the frequency range between 9 kHz and 300 MHz. With a radiating element of only 22 cm / 8,66 inch it can be erected inconspicuously. It can be powered with 5-15 V DC (max.10mA) and alternatively with the supplied Dual Power unit CPI 1000DP via USB.

On shortwave, its IP3-value is typically >+30dBm at 7 MHz.
Frequency range: 9KHz – 300MHz
Enlarged and flexible 200mm radiating element.

Flexible power supply

The MegActiv MA305 can be operated by two different kinds of power sources. It can be powered either by a conventional plug power supply (5,5 / 2,1mm round plug) or via USB. Powering via USB has the advantage that no external power supply is needed and that the antenna can be operated  autonomously and noise-free with a separate USB PowerBank. The supply voltage range is 5 - 15V DC (10mA max) and thus the antenna is also well suited for portable use.


  • Integrated double surge protection of the active components: Coarse protection by gas discharge tubes with 60V firing voltage with max. pulse leakage current 1kA (8/20µs) with additional integrated ESD fine protection of max. 2kV.
  • Standard delivery with DualPower power unit CPI1000DP (external power supply and USB-operation possible)
  • IP3:>typ. +30dBm
  • IP2:>typ. +50dBm

Fernando from did the first comparison Test in Mai 2015 and released this test on his Page in German:

Quote from the review by FenuRadio: (translated)

"The NTi MegActiv is a small receiving antenna with excellent reception performance. The construction proved to be unproblematic, similar to the Boni-Whip. From VLF up on the FM band, the MegActiv receives very well despite their small size. When properly setup it provides a nearly unbeatable signal / noise ratio!"

Whats in the box?

  • MegActiv MA305
  • Whip / Radiator
  • Junction box CPI1000DP

Made in Germany
Frequency Range 9kHz - 300MHz
Type E-Field
Connector BNC
IP3 > +30 dBm
IP2: > +50 dBm
Gain +3dB
Power Supply 5 - 15 Volt
Power consumption Typ: 10 mA (max. 40 mA)
Power supply via USB possible Yes
Radiator length 22cm
Application range Outdoor
Junction Box CPI1000DP DualPower
Made in Germany Yes

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