Yaesu FT-7900E Manuals

Manuals and User Guides for Yaesu FT-7900E. We have 1 Yaesu FT-7900E manual available for free PDF download: Technical Supplement

Yaesu FT-7900E Technical Supplement

Yaesu FT-7900E Technical Supplement (51 pages)

Dual Band FM Transceiver

Brand: Yaesu | Category: Transceiver | Size: 4.46 MB

Table of Contents

Table of Contents
1
Introduction
1
Important Note
1
Specifications
2
Exploded View & Miscellaneous Parts
3
Block Diagram
5
- UHF Reception
  7
- IF and Audio Circuits
  7
- VHF Reception
  7
Circuit Description
7
- UHF Transmit Signal Path
  8
- TX APC Circuit
  8
- PTT Circuit
  8
- PLL Circuit
  8
- Introduction and Precautions
  9
- Required Test Equipment
  9
Alignment
9
- RF Front-End Tuning
  10
- PLL Reference Frequency
  10
- Entering the Alignment Mode
  10
- Alignment Preparation and Precautions
  10
- TX Power Output
  11
- TX Deviation
  11
- DCS TX Deviation
  12
- CTCSS TX Deviation
  12
- Center Meter Sensitivity
  13
- S-Meter Sensitivity
  13
- DC Voltmeter
  13
- To Close the Alignment Mode
  13
- MAIN Unit (Lot. 1 ~ 115) Circuit Diagram
  15
- MAIN Unit (Lot. 1 ~ 115) Parts Layout
  17
- MAIN Unit (Lot. 116 ~) Circuit Diagram
  19
- MAIN Unit (Lot. 116 ~) Parts Layout
  21
- MAIN Unit Parts List
  23
- PANEL Unit Circuit Diagram
  41
- PANEL Unit Parts Layout
  42
- PANEL Unit Parts List
  43
PANEL Unit
45
CH Unit Circuit Diagram
47

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