Motorola HAD4021A Installation Manual page 3

Vhf vehicle roof-top antennas
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Introduction
The vehicle roof-top antennas are each supplied with a coaxial lead-in cable and connector. In the
completed installation, the cable is concealed between the headlining and the roof of the vehicle,
with minimum disturbance to the headlining and the upholstery.
Figure 1
shows the two roof-top
antennas.
HAD4021A
HAD4022A *
Unity Gain Quarter-Wave
3 dB 5/8th Wave
136 –174 MHz
132 – 174 MHz
* Requires tuning in the field as per the tuning instructions.
Figure 1. VHF Roof-Top Antennas

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