Antenna Guide
The A20-Mini ships with an antenna set with three antennas (1 straight 470-548 MHz, 1 straight 548-638 MHz, 1 straight uncut, set
of antenna caps).
Sound Devices offers additional pre-cut and uncut antennas as available options.
Attach antennas with a length specific to the frequency in use. Using the wrong length of antenna reduces RF range.
Cutting Antennas to Length
Uncut antennas need to be cut to the length specific to the frequency for intended use.
1.
Determine the frequency range intended for the uncut antenna using the Antenna Length chart.
2.
Measure the antenna for the cut point. Measurements should begin from the bottom of the SMA connector.
3.
Using a pair of cutters, cut the quarter-wave antenna at the specified cut point.
4.
Position the antenna cap onto the cut-end of the antenna and push the cap firmly onto the antenna.
Antenna Length Chart
# Frequency
Range
Antenna Length
in mm
Antenna Length in
inches
1 470 - 548 MHz
140 mm
5.51”
2 548 - 638 MHz
120 mm
4.72”
3 638 - 694 MHz
103 mm
4.07”
4 738 - 865 MHz
89 mm
3.50”
5 902 - 1015
MHz
74 mm
2.92”
6 1045 - 1154
MHz
65 mm
2.55”
7 1240 - 1260
MHz
57 mm
2.24”
8 1350 - 1525
MHz
50 mm
1.95”
Use antenna 1, 2, and 3 in the United Kingdom and Europe.
Use antenna 1 and 2 in the United States and Canada.
A20-Mini
User Guide
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