User's Manual

5.2 Antenna Characteristics

The Tracker is certified with the following antennas as described in Tables 6-8. Only the Swarm

Coiled ¼ Wave 8.5” Antenna may be used with the Tracker when it is body mounted.

Swarm Coiled ¼ Wave 8.5” Antenna

Parameter

Value

Length

21.5 cm

Diameter (Connector)

11.2 mm

Diameter (along major length)

7.6 mm

Weight

32 g

Operating Temperature

-60 °C to +60 °C

Operating Humidity

0-100% humidity, condensable

Impedance

50 Ohms nominal

Polarization

Linearly Polarized

VSWR (in Swarm Bands)

1.8

Frequency

137-138 and 148-150 MHz

Connector

SMA male

Antenna Classification

Portable

Minimum separation distance from body

0cm

Table 6: Antenna characteristics for Swarm Coiled ¼ Wave 8.5” Antenna