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Ericsson GE MDS Maintenance Manual

148-174 mhz mobile radio combination
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LBI-38652
Mobile Communications
MDS
148-174 MHz MOBILE RADIO
COMBINATION
TABLE OF CONTENTS
MAIN BOARD ASSEMBLY . . . . . . . . . . . . . . . . . . . LBI-38756
FRONT PANEL ASSEMBLY . . . . . . . . . . . . . . . . . . . LBI-38757
POWER AMPLIFIER ASSEMBLY . . . . . . . . . . . . . . . LBI-38758
SERVICE SECTION . . . . . . . . . . . . . . . . . . . . . . . LBI-38759
Printed in U.S.A.
Maintenance Manual

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Summary of Contents for Ericsson GE MDS

  • Page 1 LBI-38652 Mobile Communications 148-174 MHz MOBILE RADIO COMBINATION TABLE OF CONTENTS MAIN BOARD ASSEMBLY ....LBI-38756 FRONT PANEL ASSEMBLY ....LBI-38757 POWER AMPLIFIER ASSEMBLY .

  • Page 2: Table Of Contents

    Figure 1 - MDS Conventional Radio Block Diagram ....... . .

  • Page 3: Package Numbers

    DESK TOP MIC ANI Encode Transmitter ANIR 1/4 WAVE, ROOF MT ANTENNA W/TNC CONNECTOR The small size of the MDS radio makes it ideal for front ZM3L EXTERNAL WEATHERPROOF SPEAKER AND CABLE mounting in conventional vehicles. The radio is operated with LS1F MIL SPEC SPEAKER, 4 OHMS, 5 x 5 The radio transmitter includes the Synthesizer’s modulated...

  • Page 4: Figure 1 - Mds Conventional Radio Block Diagram

    LBI-38652 LBI-38652 Figure 1 - MDS Conventional Radio Block Diagram...

  • Page 5: Front Panel Assembly

    50 dB when the Alert tones are ble on a per channel basis, with the radio enabled to decode for a complete set of instructions on how to program the MDS only. On a channel where Type 99 has not been selected in pro- summed into the path.

  • Page 6: External Speaker (Optional)

    The internal speaker must be disconnected when an external speaker is used. The MDS Conventional radio can operate in either the Channels can be programmed to receive-only operation. Type 99 Select Mode or the Type 99 Monitor Mode. In the Channels cannot be programmed for Transmit-only operation.

  • Page 7: Ge Type 99 Format

    Table 4 - Tone Generator Frequencies The GE tone format is illustrated below: NOTE INDIVIDUAL CALL FORMAT The MDS radio is able to recognize the A, B, and C tones. Individual, Group and Quick Call formats may be used simultaneously. <---1.0 SEC--->...

  • Page 8: Table 6 - Motorola Group Call Tone Groups (Tg)

    LBI-38652 LBI-38652 The digit "0" in Table 5 shows that Tone B is in Tone NOTE Group 2 along with 20 to 29 and 30 to 39. Tone number 7 in Group Call code numbers range from 00 to 99. How- Tone Group 2 is 832.5 Hz (see Table 6).

  • Page 9: Mechanical Parts Breakdown

    LBI-38652 LBI-38652 MECHANICAL PARTS BREAKDOWN...

  • Page 10: Mechanical Parts List

    LBI-38652 LBI-38652 PARTS LIST...

This manual is also suitable for:

Mds tlh22Mds tlh28

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