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Mobile Antenna Installation

Antenna Assembly Instructions

If antenna mount has not been installed, refer to the Antenna Mount Installation instructions. 
Assemble the antenna assembly (except the whip) onto the mounting base as shown in 

Figure 1.

1. Place the lock washer on stud loading coil/base housing.
2. Assemble either the standard duty or heavy duty spring adaptor to the base housing 

assembly by threading onto the housing stud with lock washer already in place.

3. Hand tighten the adaptor until the lock washer is fully compressed. 
4. Press rubber gasket onto the bottom of the coil housing.
5. Do not insert the antenna whip into the antenna adaptor at this time. Refer to the 

Tuning the 

Antenna section on page 1-12

 for further instructions.

Figure 1. 

Standard Duty Whip Adapter

58-80368B32

Lock washer

04-80378B70

Loading Coils/Base housing

01-80358A86

30 – 36 MHz

01-80358A87

36 – 42 MHz

01-80358A88

42 – 50 MHz

01-80358A89

66 – 88 MHz

01-80358A90

136 – 174 MHz

01-80358A91

406 – 512 MHz Heavy Duty Spring

01-80358A92

406 – 512 MHz Standard Duty

Whip

47-80369B56

30 – 174MHz

Set Screw

03-80374B24

Heavy Duty Spring

01-80373B34

Rubber Gasket

32-80369B53

Whip

01-80358A37

406 – 420 MHz

01-80358A38

445 – 470 MHz

01-80358A39

470 – 494 MHz

01-80358A40

494 – 512 MHz

Summary of Contents for Spectrum Series

Page 1: ...Title Page Spectrum Series Base Loaded Mobile Antennas Installation Manual 6880309C12 F M Motorola Inc 1301 E Algonquin Rd Schaumburg IL 60196 1078 U S A ...

Page 2: ...sion of Motorola No part of this manual 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 r...

Page 3: ...313 E Algonquin Road Schaumburg Illinois 60196 To order Call Toll Free 1 800 422 4210 Before You Start Roof Mount Safety Precautions and Problem Prevention for Motor Vehicle Use only Safe Antenna Installation Read all instructions carefully before starting the installation Antenna contact with high voltage wires may result in death from electrocution Since April 3 1994 the warranty on Spectrum ant...

Page 4: ...the vehicle before entering the automatic car wash to prevent damage to the antenna and vehicle The antenna mount contact must be wiped dry to prevent moisture from damaging the contact Recommended Antenna Location Standard Metal Passenger vehicles Recommended Location Standard metal passenger vehicles Center roof or center trunk lid Vans pickups and other light trucks metal roofs Center roof Heav...

Page 5: ...he trunk lid ensure that the trunk lid is grounded by connecting groundling straps between the trunk lid and the vehicle chassis 3 Ensure the antenna cable can be easily routed to the radio Ensure that the antenna cable is routed separately and not in parallel to any other vehicle wiring or mobile radio cable wiring 4 Check the antenna location for any electrical interference NOTE Any two metal pi...

Page 6: ...ully compressed 4 Press rubber gasket onto the bottom of the coil housing 5 Do not insert the antenna whip into the antenna adaptor at this time Refer to the Tuning the Antenna section on page 1 12 for further instructions Figure 1 Standard Duty Whip Adapter 58 80368B32 Lock washer 04 80378B70 Loading Coils Base housing 01 80358A86 30 36 MHz 01 80358A87 36 42 MHz 01 80358A88 42 50 MHz 01 80358A89 ...

Page 7: ...l a 3 4 hole in the vehicle with antenna hole cutting saw Motorola part RPX 4378A and remove all burrs The antenna hold saw will remove paint in a narrow ring around hole to assure good metal contact between vehicle and mount 2 Apply generous amounts of silicon grease to inner and outer threads of brass lock nut Feed coaxial cable and mount through hole as shown in Figure 2 Figure 2 3 Thread locki...

Page 8: ...nk lid mount may be placed at the center of trunk lid near the rear window or to the side preventing the antenna from hitting the rear window when raising the trunk lid Be sure the coaxial cable is not pinched under the mount clamp bracket Refer to Figure 5 Figure 5 Coaxial Cable Insertion 2 Using the allen wrench supplied tighten the set screws clockwise until the set screws break through the pai...

Page 9: ...Motorola part 28 82021G01 1 Disassemble the connector as shown in Figure 7A 2 Cut off end of cable squarely and remove 3 4 of vinyl jacket Refer to Figure 7B 3 Slide coupling ring and adaptor on cable as in Figure 7C 4 Fan braid slightly and fold back as shown in Figure 7D 5 Position adaptor to dimension as shown in Figure 7E Press braid back over body of adaptor and trim to 3 8 Base 5 8 of conduc...

Page 10: ...on plug assembly 8 Connect cable to antenna connector on radio set Tighten coupling ring cross section of final assembly as shown in Figure 7G NOTE Coupling ring and plug sub assembly comprise of Motorola part number 28 82021G01 Figure 7 A B C D E F G Coupling Ring Adapter 58 854020 Plug Sub Assembbly TEFLON Washer 470MHZ and higher 04 84506K01 3 4 Adapter 3 4 TEFLON Washer 470MHZ and higher 1 8 o...

Page 11: ...ter contact using crimp area C of Figure 8 Crimp at base of center contact avoid crimping at the tip Refer to Figure 9 5 Push collar forward onto plug assembly Fit cable braid over support sleeve of connector See Figure 10 6 Push ferrule over braid until flange butts against connector body Refer to Figure 10 Using the correct crimp area of tool crimp ferrule close to plug body Crimp ferrule for a ...

Page 12: ...ip of Pin 2 mm Flared Braid Connector Body Collar Ferrule Cable Inserted into Connector Body Crimp Center Contact after Inserting Cable Protruding Center Conductor Collar Slipped Forward over Connector Body Push Ferrule Forward over Braid Flange Butts against Connector Body Crimp Ferrule to Complete Crimp MAEPF 27622 O ...

Page 13: ...10AMA With RG58 A U Cable With RG58 A U Cable With RG58 A U Cable 406 420 5 dB Standard 150 RAE 4002A RAE 4002ARA RAE 4002ATA RAE 4002AMA 445 470 5 dB Standard 150 RAE 4004A RAE 4004ARA RAE 4004ATA RAE 4004AMA 470 495 5 dB Standard 150 RAE 4005A RAE 4005ARA RAE 4005ATA RAE 4005AMA 495 512 5 dB Standard 150 RAE 4006A RAE 4006ARA RAE 4006ATA RAE 4006AMA With Low Loss Cable With Low Loss Cable 406 42...

Page 14: ...hip in the whip adaptor assembly 3 Using the in line wattmeter measure forward and reflected power at the desired transmit frequency and calculate VSWR using Table 3 4 If VSWR is 1 5 1 then trim off 1 2 and repeat Step 3 5 Repeat steps 3 and 4 until minimum VSWR is obtained 496 512 5 dB Heavy 150 RAE 4016A RAE 4016ARA RAE 4016ATA RAE 4016AMA With Low Loss Cable With Low Loss Cable 406 420 5 dB Hea...

Page 15: ...ble tighten set screw to a torque of 25 30 inch lbs A simple table for converting the ratio of forward power and reflected power to VSWR is given below Example If the forward power Pfwd is measured as 100 watts and the reflected power Pref is 3 watts calculate Pfwd Pref 33 3 Since 33 3 is between 25 and 58 8 m the chart above indicated that the VSWR is less than 1 5 1 Table 3 Pfwd Pref VSWR 440 6 ...

Page 16: ...otorola Cutting chart lengths are approximate Whip length will wary with type of vehicle mount location and type of mount Cut 1 1 2 inches longer than chart length then trim for minimum reflected power Standard No Spring Heavy Duty Spring ...

Page 17: ...Spectrum by Motorola 15 Standard No Spring Heavy Duty Spring ...

Page 18: ...16 Spectrum by Motorola Standard No Spring Heavy Duty Spring ...

Page 19: ...otorola Cutting chart lengths are approximate Whip length will wary with type of vehicle mount location and type of mount Cut 1 1 2 inches longer than chart length then trim for minimum reflected power Standard No Spring Heavy Duty Spring ...

Page 20: ...18 Spectrum by Motorola Standard No Spring Heavy Duty Spring ...

Page 21: ......

Page 22: ... Rd Schaumburg IL 60196 1078 U S A MOTOROLA the Stylized M Logo and ASTRO are registered in the U S Patent and Trademark Office All other product or service names are the property of their respective owners 2000 2010 by Motorola Inc All rights reserved M ...

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