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FT-221R
Yaesu FT-221R Manuals
Manuals and User Guides for Yaesu FT-221R. We have
1
Yaesu FT-221R manual available for free PDF download: Instruction Manual
Yaesu FT-221R Instruction Manual (53 pages)
VHF
Brand:
Yaesu
| Category:
Transceiver
| Size: 3.59 MB
Table of Contents
Table of Contents
2
General Description
3
Specifications
4
Semiconductor Complement
5
Installation
6
General
6
Base Station Installation
6
Mobile Installation
6
Transformer Primary Wiring
7
Controls and Switches
8
Main Tuning Control
8
Band Switch
8
Front Panel Controls & Switches
8
Rear Panel Connections
10
Operation
11
Initial Check
11
Dial Readout
11
Receiver
11
Frequency Calibration
12
Transmitter
12
SSB and am Modes
12
CW Mode
12
Repeater Operation
13
VOX Operation
13
Crystal Controlled Operation
14
Block Diagram
15
Circuit Description
16
RX RF Unit
16
SSB if Unit
16
FM if Unit
17
AF AMP Unit
18
MIC AMP Unit
19
Exciter Unit
20
Booster Unit
21
Other Circuits
22
VFO Unit
22
FIX Unit
22
Local Unit
22
PLL Unit
24
Marker Unit
25
Tone Burst Unit
25
Power Supply & Regulator Unit
26
Maintenance & Alignment
27
Routine Maintenance
27
Alignment
28
Discriminator Meter Center
28
Frequency Adjustment
28
Voltage Adjustment for the Varicap Tuning Circuit
29
S Meter Setting
29
Carrier Balance
29
SSB Carrier Frequency
29
CW Carrier Level
30
Squelch Threshold
32
FM Deviatoin Adjustment
32
PO Meter Set
32
AM Carrier Level
32
Regulator Unit
33
Connector Resistance Chart
34
Connector Voltage Chart
35
Voltage Chart
36
Parts List
40
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