Codan Radio Communications VT-3-150-SN Manuale Utente

VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz

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Page

1

GENERAL................................................................................................................. 1-1
1.1

Introduction .................................................................................................... 1-1

1.2

Manual Organization ...................................................................................... 1-1

1.3

VT-3 132 - 174 MHz Transmitter Family Models.......................................... 1-2

1.4

Performance Specifications............................................................................. 1-3

1.4.1

General............................................................................................... 1-3

1.4.2

Audio Specifications........................................................................... 1-4

1.4.3

Physical Specifications ....................................................................... 1-5

2

SYSTEM OVERVIEW .............................................................................................. 2-1
2.1

Transmitter Operation..................................................................................... 2-1

2.2

Frequency Selection........................................................................................ 2-3

2.2.1

Synthesizer Transmitter.................................................................... 2-3

2.3

Transmitter Assembly and Adjustment ........................................................... 2-4

2.3.1

Complete Transmitter Alignment ........................................................ 2-4

2.3.2

Frequency Change.............................................................................. 2-5

2.3.3

Output Power Adjustment................................................................... 2-5

2.3.4

Deviation Setting................................................................................. 2-6

2.3.5

Setting RF Alarm Thresholds ............................................................. 2-6

2.4

Recommended Test Equipment List................................................................ 2-6

2.5

Repair Note..................................................................................................... 2-7

2.6

Printed Circuitboard Numbering Convention.................................................. 2-7

3

ILLUSTRATIONS..................................................................................................... 3-1
3.1

MT-3 Transmitter Front Panel........................................................................ 3-1

3.2

MT-3 Transmitter Case - Exploded View ....................................................... 3-2

4

PARTS LIST.............................................................................................................. 4-1

5

REVISION HISTORY............................................................................................... 5-1

MODULE MANUALS

Transmitter Main Board Instruction Manual ......................................IM20-MT3TXMN
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz................IM21-VT3150AMP
Enhanced Synthsizer Instruction Manual OS(R/T)-3A/H 29-470 MHz  .. IM10-OS3AH
VHF Transmitter Channel Designation Table ..................................... IM21-VT3150CT