TBMA5 Active Monopole Antenna



TBMA5 Active Monopole Antenna

The TBMA5 is an active Monopole Antenna, expanding the Tekbox product range of affordable EMC pre-compliance test equipment.
The monopole antenna is designed for radiated emission measurements within the frequency range 9 kHz – 30 MHz, according to CISPR 16. The monopole antenna has a rod with a height of 104 cm and provides sufficient sensitivity to carry out radiated emission measurements as specified in CISPR 25 or MIL-STD-461G.

The TBMA5 consists of an impedance converter, a universal charger, a 10 mm diameter rod, a 60 cm x 60 cm ground plane and a standard 10pF calibration adapter. Furthermore, it includes the coaxial cable with ferrite and grounding equipment required under MIL-STD-461G. The impedance converter is equipped with a ¼” thread to attach it to conventional tripods.



  • Characterized frequency range: 9 kHz to 30 MHz
  • Electric field antenna factor: +6 to +7 dB/m, typ.
  • Antenna factor variation: < ±0.8 dB, typ.
  • Dynamic Range: 118 dB @ 1MHz, 1 KHz bandwidth
  • Electric field, lower limit: 12 dBµV/m (4.0 µV/m) @ 1MHz, 1 KHz bandwidth
  • Electric field, upper limit: 130 dBµV/m (3.15 V/m) @ 1 dB compression
  • Output VSWR: 1.02 to 1.52 (average:1.06) :1
  • Output connector type: N female
  • Battery type: 6 x NiMH, AA (not included)
  • Battery life on average: 20 hours
  • Charger: Ansmann ACS310
  • Tripod mount: ¼” thread
  • Impedance converter dimensions: 185 x 210 x 65 mm, 1.5 kg
  • Carrying Case: Aluminum, 75 x 73 x 18 cm, 4 kg


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