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Daniels MT-3 Instruction Manual

132-174 mhz 406-470 mhz low current front end
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Download this manual See also: Instruction Manual
MT-3 LOW CURRENT
FRONT END
INSTRUCTION MANUAL
132-174 MH
406-470 MH
Z
Z
Covers Models:
A11-FEF3/150
A11-RFAMP3/150
A13-FEF3/400
A13-RFAMP3/400
Copyright © 2005 Daniels Electronics Ltd. All rights reserved. No
part of this publication may be reproduced, stored in a retrieval system
or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording or otherwise, without the prior written consent
of Daniels Electronics Ltd.
DE™ is a registered trademark of Daniels Electronics Ltd. registered in
the U.S. Patent and Trademark Office.
Document Number:
IM11-FE3
Daniels Electronics Ltd.
Revision:
2-0-2
Victoria, BC
Revision Date:
Aug 2005
PRINTED IN CANADA
Printed Copy Not Controlled

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Summary of Contents for Daniels MT-3

  • Page 1 Daniels Electronics Ltd. DE™ is a registered trademark of Daniels Electronics Ltd. registered in the U.S. Patent and Trademark Office. Document Number: IM11-FE3 Daniels Electronics Ltd.
  • Page 2 This document has been produced, verified and controlled in accordance with Daniels Electronics’ Quality Management System requirements. Please report any errors or problems to Daniels Electronics’ Customer Service Department. NOTE The user’s authority to operate this equipment could be revoked through any changes or modifications not expressly approved by Daniels...

  • Page 3: Table Of Contents

    Repair Note ....................Recommended Test Equipment ..............Check Points ....................Tuning Procedure ..................MT-3 Front End Removal and Installation ..........Illustrations and Schematics ..........VHF Front End Component Layout ............UHF Front End Component Layout ............VHF/UHF Front end Schematic diagram ..........
  • Page 4 This Page Intentionally Left Blank MT-3 Low Current Front End Instruction Manual Printed Copy Not Controlled IM11-FE3...

  • Page 5: General Information

    GENERAL INFORMATION I NT RO D U C T ION The MT-3 Front End is a highly integrated, frequency selective, down converter used in Daniels Electronics standard MT-3 FM receiver product line. RF signals at the antenna input are filtered by a 5 pole helical filter, amplified through a low noise amplifier, filtered again...
  • Page 6 This Page Intentionally Left Blank MT-3 Low Current Front End Instruction Manual Printed Copy Not Controlled IM11-FE3...

  • Page 7: Theory Of Operation

    P O W E R A N D I N T E R C O N N E C T I O N The MT-3 Front End consists of a five pole helical resonator filter structure with a single The MT-3 Front End operates from +9.5 Vdc stage, low noise, bipolar amplifier followed by...

  • Page 8: Rf Amp

    L O C A L O S C I L L ATO R I N P U T The output from the five pole helical filter is The MT-3 Front End local oscillator input port coupled through impedance matching network (50 Ω) connects directly to a double balanced...

  • Page 9: Front End Alignment

    R E C O M M E N D E D T E S T E Q U I P M E N T Alignment for the MT-3 Front End consists of tuning the five section preselector filter only. Alignment of the MT-3 Front End requires the...

  • Page 10: Tuning Procedure

    3 dB bandwidth should be 5 MHz and 7 MHz in the VHF and UHF range respectively. MT-3 FR ON T EN D R EM OVA L A N D I N S TA L L AT I O N The MT-3 Front End is fastened to the main board (MT-3 Receiver IF/Audio Board) with a single Phillips screw to the Type F connector and to the front panel with two countersunk Phillips screws.

  • Page 11: Illustrations And Schematics

    PCB number 43-912010 Indicates circuit board version 1.0 PCB number 50002-02 Indicates circuit board version 2 (no decimal version) MT-3 Low Current Front End Instruction Manual Printed Copy Not Controlled IM11-FE3...

  • Page 12: Vhf Front End Component Layout

    JU1-B JU1-A JU2-B JU2-A DANIELS ELECTRONICS LTD. TITLE: MT-3 RF AMP VHF LOW CURRENT RF AMP BOARD DATE: 05 MAR 03 BOARD NO: 50037-01 DWG No: 01-T-01-01 REV DATE: - MT-3 Low Current Front End Instruction Manual Printed Copy Not Controlled...

  • Page 13: Uhf Front End Component Layout

    JU2-B JU2-A NOT INSTALLED JUMPERS INSTALLED DANIELS ELECTRONICS LTD. TITLE: MT-3 RF AMP UHF LOW CURRENT RF AMP BOARD DATE: 05 MAR 03 BOARD NO: 50037-01 DWG No: 02-T-01-01 REV DATE: - MT-3 Low Current Front End Instruction Manual Printed Copy Not Controlled...

  • Page 14: Vhf/Uhf Front End Schematic Diagram

      DATE: 6 AUG 2003 DRAWN BY: S. EARTHY             DWG No: B0303 REV DATE: - MT-3 Low Current Front End Instruction Manual Printed Copy Not Controlled IM11-FE3...

  • Page 15: Parts List

    CAP., SM, 6.8pF CER., 0805,C0G 1008-0A689J1G • CAP.,TRIM. .8-10pF,”D” BUSHING 1082-E0R8010B • CAP.,TRIM. .8-10pF,”D” BUSHING 1082-E0R8010B • CAP.,TRIM. .8-10pF,”D” BUSHING 1082-E0R8010B • CAP.,TRIM. .8-10pF,”D” BUSHING 1082-E0R8010B • CAP.,TRIM. .8-10pF,”D” BUSHING 1082-E0R8010B • MT-3 Low Current Front End Instruction Manual Printed Copy Not Controlled IM11-FE3...
  • Page 16 RES., SM, 150R 1206, 1%,100ppm 1150-2B1500FP • RES., SM, 178R 1206, 1%,100ppm 1150-2B1780FP • RES., SM, ZERO OHM JUMPER,0805 1150-0A0R0000 • • RES., SM, ZERO OHM JUMPER,0805 1150-0A0R0000 • • MT-3 Low Current Front End Instruction Manual Printed Copy Not Controlled IM11-FE3...

  • Page 17: Mechanical Parts List

    NUT, .234-64, HEX, FOR 8052/4 1083-N234T640 SCREW, M2.5x39 CHEESE/PHIL, A2 5812-2M5PP39S SCREW, M3 X 6, FLAT/PHIL., A2 5812-3M0FP06S SCREW, NYLON, 6-32x3/8,RD/SLOT 5802-632RS06P STANDOFF,5.56mmOD,4mmL,M2.5,SW 5927-5S4BM25T WIRE, TFE/STRAND., 24AWG, RED, 20cm 7121-24S19362 MT-3 Low Current Front End Instruction Manual Printed Copy Not Controlled IM11-FE3...
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  • Page 19: Revision History

    Added CABLE,SMA PLUG-OPEN,RG316,21CM (7910-SP001021) missing from Mechanical parts list. Added Lid (3702-67301121) to Mechanical parts list; part was missing. Updated VHF/UHF Schematic on page 10; wrong version was displayed. MT-3 Low Current Front End Instruction Manual Printed Copy Not Controlled IM11-FE3...
  • Page 20 This Page Intentionally Left Blank MT-3 Low Current Front End Instruction Manual Printed Copy Not Controlled IM11-FE3...

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