Motorola HAD4021A Installation Manual Download Page 3 | Manualshive

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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.

shows the two roof-top

antennas.

Figure 1. VHF Roof-Top Antennas

HAD4022A

*

3 dB 5/8th Wave

132 – 174 MHz

HAD4021A

Unity Gain Quarter-Wave

136 –174 MHz

*

Requires tuning in the field as per the tuning instructions.

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Summary of Contents for HAD4021A

Page 1: ...Title Page VHF Vehicle Roof Top Antennas HAD4021A HAD4022A Installation Manual 68007024095 C M Motorola Solutions Inc 1303 E Algonquin Rd Schaumburg IL 60196 1078 U S A ...

Page 2: ...al may be reproduced distributed or transmitted in any form or by any means electronic or mechanical for any purpose without the express written permission of Motorola Disclaimer The information in this document is carefully examined and is believed to be entirely reliable However no responsibility is assumed for inaccuracies Furthermore Motorola reserves the right to make changes to any products ...

Page 3: ...le 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 Figure 1 VHF Roof Top Antennas HAD4022A 3 dB 5 8th Wave 132 174 MHz HAD4021A Unity Gain Quarter Wave 136 174 MHz Requires tuning in the field as per the tuning instructions ...

Page 4: ...e antenna installation must be in accordance with the following Requirements of the antenna manufacturer supplier Instructions in the radio installation manual NOTE To comply with RF Safety standards HAD4021A and HAD4022A must only be mounted on the roof To comply with FCC regulations when installing the antenna lead in cable DO NOT shorten the cable Advise the radio owner to unscrew the upper ant...

Page 5: ...iring Check the antenna location for any electrical interference NOTE Any two metal pieces rubbing against each other such as seat springs shift levers trunk and hood lids exhaust pipes etc in close proximity to the antenna can cause severe receiver interference If the vehicle is equipped with an electronic anti lock braking system ABS mount the antenna at the center of the roof or trunk lid and d...

Page 6: ...to make sure that all points of obstruction are avoided 2 Drill a pilot hole at selected location and then drill a 3 4 inch hole from the top outside the vehicle only with the Motorola 01 80382A25 holecutting saw or equivalent until it bottoms 3 Clean the roof metal in a neat circle to ensure good contact with the bushing assembly and its locking nut NOTE In installations involving a double roof w...

Page 7: ...ut on the end of the bushing assembly a few times before installing This removes any burrs that might be present 7 Insert the end of the coaxial cable into the mounting hole and then route the cable between the roof and headlining to the radio NOTE If you experience difficulty with cable routing use an electrician s fishtape to perform this step 8 Refer to Figure 2 on page 5 Apply a generous amoun...

Page 8: ...igure 4 While holding the bushing assembly down thread the locking nut onto it Figure 4 Threading the Locking Nut 11 When the nut is well onto the bushing assembly pull upward on the entire assembly as shown in Figure 5 Make sure the bushing assembly is centered in the hole and seated properly with both shoulders inside the mounting hole In double roof vehicles which have no dome light DO NOT atte...

Page 9: ...ount should be installed in a vehicle with double roof construction and no dome light Single roof installations are similar to Figure 6 except there is no second roof layer present Figure 6 Double Roof With Dome Light Installation Figure 7 Double Roof Without Dome Light Installation The locking nut must come into contact with the vehicle roof to ensure the proper antenna radiation pattern is creat...

Page 10: ...n the antenna over the locking nut and secure the metal cap to the external threads of the locking nut Figure 8 Attaching the Antenna 16 With the antenna rod in a perfectly vertical position tighten the metal cap by hand as much as possible 17 With a 10 inch adjustable wrench or a 1 inch open end wrench tighten the metal cap no more than an additional 1 2 turn 18 Replace the headlining and dome li...

Page 11: ... UHF 9 Connector Fabrication Mini UHF Refer to Figure 9 Use the Motorola crimping tool part number 66 80388A26 in the following procedure Figure 9 Motorola Crimping Tool 66 80388A26 256 319 068 051 213 A B C D E FIVE CRIMP AREAS ...

Page 12: ... of the cable and then insert the cable into the shell Be sure that the shell end with the larger diameter opening is facing towards the end of the cable 4 Solder the gold plated center pin to the center wires by adding solder to the hole in the back of the pin Then while heating the center pin so that the solder remains melted insert the wires fully into the pin Note Ensure that no solder is allo...

Page 13: ...until it rests on the connector body and then push the crimp forward allowing the braided shielding to be compressed between the crimp and the body of the connector 7 Use crimp area E of the crimping tool shown in Figure 9 on page 9 to form the crimp into place ...

Page 14: ...Chart for HAD4022A Figure 11 Rod Cutting Chart 132 134 136 138 140 142 144 146 148 150 152 154 156 158 160 162 164 166 168 170 172 174 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Rod Length inches HAD4022A Frequency MHz ...

Page 15: ......

Page 16: ... 1078 U S A MOTOROLA MOTO MOTOROLA SOLUTIONS and the Stylized M logo are trademarks or registered trademarks of Motorola Trademark Holdings LLC and are used under license All other trademarks are the property of their respective owners 2009 2011 Motorola Solutions Inc All rights reserved M ...

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