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MT-4 RADIO SYSTEMS
Copyright © 2000 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 Electronic Ltd. registered in the United States Patent and
Trademark Office.
Issue:
Preliminary
Issue Date:
July 00
Printing Date:
July 00
Part No.:
IM21-VT4B150
P25 DIGITAL VHF BASE
TRANSMITTER
INSTRUCTION MANUAL
VT-4B
Covers models:
VT-4B140-00-000, VT-4B160-00-000
VT-4B140-01-000, VT-4B160-01-000
Previous Issue:
Previous Issue Date: -
136 - 174 MHz
-
Daniels Electronics Ltd.
Victoria, BC.
PRINTED IN CANADA
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Table of Contents
Related Manuals for Daniels VT-4B140-00-000
Summary of Contents for Daniels VT-4B140-00-000
- Page 1 Daniels Electronics Ltd. DE™ is a registered trademark of Daniels Electronic Ltd. registered in the United States Patent and Trademark Office. Issue:...
- Page 2 NOTE: The user's authority to operate this equipment could be revoked through any changes or modifications not expressly approved by Daniels Electronics Ltd. The design of this equipment is subject to change due to continuous development. This equipment may incorporate minor changes in detail from the information contained in this manual.
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Page 3: Table Of Contents
2.3 Transmitter Programming using Motorola Radio Service Software ....2-5 2.4 Secure Communications..............2-6 2.5 Transmitter Assembly and Adjustment ..........2-6 2.5.1 Controller Board Alignment ............2-6 2.5.1.1 Reference Oscillator Adjustment ..........2-6 DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual... - Page 4 4.1.1 P25 Base Transmitter Main Board Electrical Parts List ......4-1 4.1.2 P25 Base Transmitter Mechanical Parts List ........4-3 REVISION HISTORY................ 5-1 MODULE MANUALS VHF Amplifier Instruction Manual VT-3 132 - 174 MHz.... IM21-VT3150AMP DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual...
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Page 5: General
There are 2 distinct models in the VT-4B Transmitter family each with different bands of operation. The 2 models are as follows: • VT-4B140-00-000 - 136-150 MHz band, 2.0-8.0 Watt • VT-4B160-00-000 - 150-174 MHz band, 2.0-8.0 Watt The transmitters' band of operation is determined by select components in the amplifier. -
Page 6: Performance Specifications
PTT Time-Out-Timer: Programmable from 1 sec. to 8 hrs. (default 5 min.), using Radio Programming Software package. Channel Spacing: 12.5 kHz /15 kHz or 25 kHz / 30 kHz. DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual... -
Page 7: Audio Specifications
Gold plated module connectors. Module Design: Compact Eurostandard modular design. Plug-in modules mate with Daniels standard M3 repeater subrack. Subracks / modules comply with IEEE 1101, DIN 41494 and IEC 297-3 (mechanical size / modular arrangement). External Connections: RF Connection: type N connector located on the transmitter module front panel. - Page 8 DIN 41612 Level 2 (200 mating cycles, 4 day 10 ppm gas test with no functional impairment and no change in contact resistance). Digital I/O: 8-pin RJ-45 Handle Text Colour: DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual...
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Page 9: Theory Of Operation
*** Note that the current version of Radio Programming Software is a demonstration version only, and cannot be used to program a Transmitter. To program a Transmitter, use Motorola’s Radio Service Software (RSS), a Motorola Radio Interface Box (RIB), and a Daniels Programming Cable. -
Page 10: Transmitter Wide Options
The transmitter’s frequency band is set here. The available options are 136 – 174 MHz and 406 – 470 MHz. The band from 803 – 870 MHz will become available in future models. DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual... -
Page 11: Channel Wide Settings
Burst signals to the receiving radio that the transmission is ending, allowing it to mute more quickly. 2.2.2.6 DCS Code One of eighty-six DCS codes may be selected here. DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual... -
Page 12: Dcs Invert
Channel Status This option is not currently used. 2.2.2.14 Transmitter Pre-emphasis For analog channels, the standard 6 dB/octave pre-emphasis curve may be either disabled or applied to the transmitted audio DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual... -
Page 13: Nac Transmitter Code
Therefore, it is recommended that Motorola’s Radio Service Software (RSS) and Radio Interface Box (RIB) be used in conjunction with a Daniels Radio Programming Cable to program the transmitter modules. For instructions on how to use the RSS, consult Motorola’s Astro Portable / Mobile Radio Software User’s Guide. -
Page 14: Secure Communications
To transmit a secure signal, the transmitter must be programmed with the correct encryption key using a Motorola KVL keyloader in conjunction with a Daniels Keyloader Cable. Consult the instructions for the Keyloader for details on loading a key. A loaded key may be cleared by pulling first the CLEAR KEYS 1* then the CLEAR KEYS 2* inputs to ground about 500 ms apart. -
Page 15: Transmitter Deviation Balance Adjustment
2885 Hz. Click on the "UPDATE SOFTPOT" button to save the new setting to the radio's non- volatile memory. Repeat the process for each test frequency. This completes the adjustment process for the transmitter deviation limits, and completes the alignment process for the Main Board. DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual... -
Page 16: Amplifier Alignment
It is recommended that the radio communications test set be frequency locked to an external reference (WWVH, GPS, Loran C) so that the high stability oscillator may be accurately set to within its ±1 ppm frequency tolerance. DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual... -
Page 17: Repair Note
For example: • PCB number 43-9120 10 indicates circuitboard version 1.0; • PCB number 50002- 02 indicates circuitboard version 2.0. All PCB's manufactured by Daniels Electronics are identified by one of the above conventions. DANIELS ELECTRONICS... - Page 18 This Page Intentionally Left Blank DANIELS ELECTRONICS 2-10 VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual...
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Page 19: Illustrations
POWER LED NORM ON / OFF / KEY SWITCH KEY TX PROG RJ45 CONNECTOR RF OUT TYPE N RF INPUT JACK MADE IN CANADA MADE IN CANADA VT-4B150 TRANSMITTER MODEL IDENTIFIER xT4DBM1 DANIELS ELECTRONICS P25 Digital Base Transmitter Instruction Manual... -
Page 20: Transmitter Case - Exploded View
Digital Base Transmitter Case - Exploded View 3 FINGER GASKET (2) xT4DBM2 Transmitter Case Removal: 1. Remove Screws A (four M3x8mm). 2. Remove Screws B (four M5x8mm). 3. Hold Front Panel and Pull Case. DANIELS ELECTRONICS P25 Digital Base Transmitter Instruction Manual... -
Page 21: Digital Base Transmitter Block Diagram
PTT OUT ENABLE PROG SWITCH TX ENC* 68K1 EMERG CLEAR KEYS 1*(I/P) CLEAR KEYS 2*(I/P) TX BANK A*/B +5.0 VDC +5.0 V OUT TX CSEL0 TX CSEL1 TX CSEL2 TX CSEL3 xT4DBM3 DANIELS ELECTRONICS P25 Digital Base Transmitter Instruction Manual... -
Page 22: Digital Base Transmitter Schematic Diagram
THE THREE DIFFERENT HIGHEST REFERENCE DESIGNATORS GROUND CONNECT AT P1-B30, P1-B32, P1-Z30 & LPF23 C17, D20 J14, JU14 LED1 P1-Z32. DANIELS LPF27 P1, Q3 VICTORIA B.C. LPF24 SW1, TP7 ----- ELECTRONICS LTD. TITLE: SECURE DIGITAL TRANSMITTER MAIN BOARD SCHEMATIC DIAGRAM... -
Page 23: Digital Base Transmitter Main Board Component Layout (Bottom)
50072-01 Secure Digital Transmitter Board 10µF 1.0µF LPF26 LED1 ENA* 9.5V 13.8V DANIELS xT4DBM5 ELECTRONICS VICTORIA B.C . DANIELS TITLE.: SECURE DIGITAL TX MAIN BOTTOM COMPONENT LAYOUT ELECTRONICS DATE.: 3 MARCH 1999 BOARD No.: 50072-01 P25 Digital Base Transmitter Instruction Manual... -
Page 24: Digital Base Transmitter Main Board Component Layout (Top)
100nF 10nF LP2951 C10 C9 47K5 4.7µF 604R 100nF MC33172 1.0µF DANIELS Installed Jumpers xT4DBM6 ELECTRONICS VICTORIA B.C . DANIELS ELECTRONICS TITLE.: SECURE DIGITAL TX MAIN TOP COMPONENT LAYOUT P25 Digital Base Transmitter Instruction Manual DATE.: 3 MARCH 1999 BOARD No.: 50072-01... -
Page 25: Parts List
JACK , 8-PIN JACK PCB, MNT, DUAL PORT HEADER, 2X10, .050”X .050” PITCH, SM HEADER, 2X10, .050”X .050” PITCH, SM, RA PLUG, SM,15 CCT,1.00mm,BRD-BRD 5028-DP100S15 SOCKET, 2X15, 0.025” PITCH, SM DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual... - Page 26 RES., SM, 47K5 0805, 1%,100ppm 1150-4A4752FP RES., SM, 604R0 0805, 1%,100ppm 1150-2A6040FP RES., SM, 68K1 1206, 1%,100ppm 1150-4B6812FP RES., SM, 1K0 1206, 1%,100ppm 1150-3B1001FP RES., SM, 1K0 1206, 1%,100ppm 1150-3B1001FP DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual...
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Page 27: P25 Base Transmitter Mechanical Parts List
LABEL/LEXAN, 14HP, VHF: BLACK 3536-10131410 LOCKWASHER, M3, SPLIT,A2 STEEL 5814-3M0LK00S MIC CONN, 4 PIN MALE, BLACK 5040-114ST0BK NAMEPLATE, BLANK, 14HP, ALUM. 3702-10001214 NUT, PRESS,M2.5,5.6mmOD,PC MNT 5833-T2M55615 PANEL, REAR, POS.4, 14HP EXTRSN. 3702-63002101 DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual... - Page 28 SCREW, M2.5 x 3 FLAT/PHIL, A2 SECURE DIGITAL TX FRONT PANEL SLOTTED STANDOFF, 5mmOD, 6.5mm L,M2.5 STANDOFF, 5mmOD, 6mm L,M2.5 WIRE, TFE/STRAND., 24AWG, RED 7121-24S19362 8 CM WIRE, TFE/STRAND., 24AWG,BLACK 7121-24S19360 8 CM DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual...
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Page 29: Revision History
REVISION HISTORY ISSUE DATE DESCRIPTION AND (REASON) July 00 • Preliminary DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual... - Page 30 This Page Intentionally Left Blank DANIELS ELECTRONICS VT-4B150 VHF Project 25 Digital Base Transmitter Instruction Manual...
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