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Smart Antenna for Tektronix USB Spectrum Analyzers

Alaris DF-A0047 Handheld Direction Finding Antenna (Offered by Tektronix)

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Alaris DF-A0047 Handheld Direction Finding Antenna (Offered by Tektronix)

Tektronix offers the Alaris DF-A0047 direction finding antenna for use in interference hunting applications with our USB spectrum analyzers and SignalVu-PC Map application software. The DF-A0047 contains multiple antennas and a user-selectable preamplifier to cover a broad range of interference frequencies and levels. Powered via USB, the DF-A0047 includes an integrated compass that transmits angle information to the SignalVu PC Map application for automatic creation of lines of bearing on the map.

Key specifications
  • Frequency range: 20 - 8500 MHz

  • 9 kHz-20 MHz extension module available

  • 3 user-selected bands

  • Internal preamp can be used or bypassed

  • Rotating trigger-switch to control operating bands, preamp on/off and transmit bearing

  • Horizontal or vertical polarization

  • Operating temperature from -30 to +55 °C

  • IP56 ingress protection

  • Weighs 1.8 kg

  • Includes armrest extension brace for easier handling in the field




Combined with a Tektronix USB spectrum analyzer, the Alaris DF-A0047 direction finding antenna makes interference hunting easy. Lines of bearing are automatically transmitted from the antenna to SignalVu-PC Map software, enabling fast triangulation on interference sources.


All specifications are guaranteed unless noted otherwise. All specifications apply to all models unless noted otherwise.

Antenna type
Combined loop / log-periodic dipole array
Frequency range

9 kHz - 20 MHz (DF-A0047-01)

20 - 500 MHz

500 - 8500 MHz

Nominal input impedance
50 Ω
<3.5:1, typical
Antenna gain
Variable with frequency (< 600 MHz) 6 dBi (> 600 MHz)
Low noise, 8-18 dB gain, switched in/out
Power supply
5 V @ 200 mA maximum, via USB
USB 2.0 
User inputs

Band selection by means of a rotary switch

Active/passive selection by means of a push button

Transmit angle information by releasing a push button

Angle detection
Digital compass, integrated with antenna
Form factor: Handheld
543 mm x 320 mm x 60 mm
1.8 kg
Operating temperature range:

-30 ºC to +55 ºC

Storage temperature range:

-30 ºC to +71 ºC

Ingress protection:


Ordering information

Regional availability
The Alaris DF-A0047 is not available from Tektronix in China, Japan, South Korea, Australia, New Zealand, Russia, Belarus, or Kazakhstan.
DF-A0047 direction finding antenna and accessories
Item Description
DF-A0047 Directional antenna, 20 - 8500 MHz, with electronic compass and preamp
DF-A0047-01  Frequency range extension for DF-A0047 directional antenna, 9 kHz - 20 MHz
DF-A0047-C1 DF-A0047 antenna and DF-A0047-01 extension
016-2107-00  Transit case for DF-A0047 and DF-A0047-01 
367-0612-00  DF-A0047-03 armrest for DF-A0047 and DF-A0047-01 
407-6042-00  DF-A0047-04 compass dock
174-7019-00  CAB-A107 external cable
One-year warranty. All service provided by Alaris Antennas. Contact [email protected] for service.