Daniels Electronics Ltd. VT-3AM Instruction Manual Download Page 15

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DANIELS

ELECTRONICS

VT-3A130 VHF AM Transmitter Instruction Manual

4-1

REVISION HISTORY

ISSUE

DATE

DESCRIPTION

AND (REASON)

May 97

• Issue 1.

Mar 00

• The transmitter is now capable of working over the whole AM frequency

band (118 –138 MHz) without being re-tuned.

Summary of Contents for VT-3AM

Page 1: ...al 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...

Page 2: ...ture Date 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 su...

Page 3: ...ransmitter Assembly and Alignment 2 3 2 3 1 Complete Transmitter Alignment 2 3 2 3 2 Output Power Adjustment 2 3 2 4 Recommended Test Equipment List 2 4 2 5 Repair Note 2 4 2 6 Printed Circuitboard Nu...

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Page 5: ...3A128 Synthesizer The synthesizer module can be programmed to have up to 16 channels A channel programmer can preprogram the first 15 channels channel 16 can be programmed from the front panel and cha...

Page 6: ...n and harmonic filtering for the transmitter This manual is intended primarily as a reference for frequency changes since the amplifier module is adjusted at the factory Enhanced AM FM Synthesizer Thi...

Page 7: ...e 10 Vdc to 17 Vdc Active Current 13 8 Vdc supply less than 1 5 A at Pout 4 Watts Channel Selection In 25kHz 8 333 kHz increments selected by two front panel buttons Preset capability for 15 channels...

Page 8: ...4 layer printed circuitboards Gold plated module connectors Module Design Compact Eurostandard modular design Plug in modules mate with Daniels standard M3 repeater subrack Subracks modules comply wi...

Page 9: ...The current drawn by the transmitter in its quiescent state depends on what modules are enabled during the inactive PTT off state This aspect of transmitter operation is controlled by jumper settings...

Page 10: ...be set to channel 16 Transmitter channel selection is achieved by pushing the buttons frequency increase and frequency decrease on the Frequency Select Handle The Frequency Select Handle is located o...

Page 11: ...manuals Alignment is simplified by using a SR 3 Subrack SM 3 System Monitor and RF extended cable to provide transmitter power and signal interconnection Alternatively 9 5 Vdc and 13 8 Vdc as well as...

Page 12: ...t devices which should not be removed or replaced using an ordinary soldering iron Removal and replacement of surface mount components should be performed only with specifically designed surface mount...

Page 13: ...VT 3A130 SYD410 MADE IN CANADA MADE IN CANADA AMTXM1B ON OFF SWITCH TYPE N RF OUTPUT JACK SMA REFERENCE INPUT JACK TRANSMIT INDICATOR LED TRANSMITTER MODEL IDENTIFIER MICROPHONE CONNECTOR TRANSMITTER...

Page 14: ...AM Transmitter Instruction Manual 3 2 MT 3 Transmitter Case Exploded View 3 FINGER GASKET 2 Instructions 1 Remove the four screws A in the Front panel 2 Remove the four screws B on the side of the Tr...

Page 15: ...VHF AM Transmitter Instruction Manual 4 1 4 REVISION HISTORY ISSUE DATE DESCRIPTION AND REASON 1 May 97 Issue 1 2 Mar 00 The transmitter is now capable of working over the whole AM frequency band 118...

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