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various antenna models used for radio telemetry animal tracking

ANTENNAS

 view of a magnetic roof mount dipole antenna used for radio telemetry wildlife tracking

Magnetic Roof-Mount Dipoles

ATS Part Number Frequency Range
040.000-046.000 MHz
046.000-050.000 MHz
144.000-174.000 MHz*
200.000-225.000 MHz*

Magnetic Roof-Mount Dipole

Easily mounts on any flat metal surface, excellent omni-directionality.

Highlights:

  • Low-cost, portable, and good omni-directionality.
  • Easily mounts on any flat metal surface.
  • Custom tuned to user-specified 4 MHz range
  • Includes 4 meter cable.

Standard Package Includes:

Antenna, 4.57 m (15 ft) RG58 cable (ATS #12077), and chrome magnetic mount w/BNC connector (ATS #16763).

* Specify centering frequency when ordering.

Antenna Specs

Gain
Dipole (dBd) gains are 2.15 dB greater than isotropic (dBi) gains

Quick Antenna Tips

There are two basic antenna types: directional and non-directional (omni-directional). Directional antennas are typically Yagi type, non-directional are dipole type.

The reception pattern of a directional type antenna is shown below, left. The pattern for an omni-directional antenna is shown on the right.


view of the directional pattern of a yagi antenna used for radio telemetry wildlife tracking view of the omni-directional pattern of a yagi antenna used for radio telemetry wildlife tracking
  • The more elements on the antenna, the better the gain and effective range (they are also less portable!).
  • VHF systems are line of sight; the higher the antenna is above the ground, the better the range.
  • All ATS antennas include a standard length coaxial cable; longer lengths are available.

We offer a complete line of antennas for radio tracking; we can give you advice if you’re not sure what kind to use.

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