ANTENNAS

Highlights:

• Doubles the antenna gain to increase your field range.
• User supplies steel or aluminum horizontal spacer pipe, and vertical mast pipe.
• Compass Rose is available, PN 12908.

Standard Package Includes:

Each complete Antenna System includes a pair of 4 element Yagi antennas, either a switchbox (null-peak) or hybrid signal splitter (null or peak), cabling up to a 8m (25 ft) run, and an antenna mounting kit.

User will need to supply the horizontal spacer pipe, minimum 5 feet in length, and vertical antenna mast pipe. A CAD drawing of the system is available here.

Antenna Specs

Gain

Isotropic: 7.7 dBi, Dipole: 5.6 dBi

Half power width

Horizontal-plane: 59°, Vertical-plane: 95°

Folded dimensions

85.1x10.2x4.4 cm (33.5x4x1.75 in.)

Weight

0.54 kg (1.2 lb) to 0.71 kg (1.6 lb)

Range of Ant Height

76 cm (30 in.) to 81 cm (32 in.) (For 141-175 MHz)

Range of Ant Length

106 cm (42 in.) to 86 cm (34 in.) (For 141-175 MHz)

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.

• 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.

Why an ATS Antenna?

ATS offers antennas best suited for wildlife research tracking. Our antennas are specifically designed for tracking under demanding field conditions.

We custom tune your antenna to your specific frequency range. This assures you the best possible signal reception range for your tracking work.

We guarantee our antennas for one year parts and labor on materials and workmanship. If you are not completely satisfied with your antenna, return it to us and we will refund your purchase.