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FT-225R
Yaesu FT-225R User Manual
59 pages
Manual
Specs
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6
8
Table of Contents
Specifications
3
Semiconductor Complement
4
Controls and Switches
5
MODE Switch
5
Clarifier
5
BAND Switch
5
AF Gain
6
Squelch
6
Nb
6
Meter
6
Power
7
Phones
7
MIC
7
Rear Panel Connections
8
Installation
9
General
9
Base Station Installation
9
Mobile Installation
10
Operation
11
Initial Check
11
Frequency Readout
11
Receiver
11
SSB and am Modes
12
CW Mode
12
AM Mode
12
FM Mode
12
Repeater Operation
13
VOX Operation
13
PTT Operation
13
Crystal Controlled Operation
15
Memory Operation
15
Circuit Description
17
SSB if Unit
17
RX RF Unit
17
FM if Unit
18
AF AMP Unit
19
Transmitter
20
MIC Amp
20
Exciter Unit
21
Booster Unit
22
Tone Burst Unit
22
Common Circuits
23
VFO Unit
23
FIX Unit
23
PLL Unit
24
OSC Unit
25
Counter Unit
25
Marker Unit
27
Power Supply & Regulator Unit
27
Maintenance & Alignment
28
Performance Checks
28
Routine Maintenance
28
Alignment
29
CW Semi-Break-In
29
CW Sidetone Level
29
Antitrip
29
Discriminator Center Meter
30
Bottom View
30
Frequency Adjustment
31
CW Keying Unit
31
Voltage Adjustment for the Varicap Tuning Circuit
31
S-Meter Setting
32
CW Carrier Level
32
SSB Carrier Frequency
32
AM and CW Carrier Frequency
32
Power Output
33
PO Meter Set
33
AM Carrier Level
33
ALC Threshold
33
Local Unit
35
Squelch Threshold
36
FM Deviation Adjustment
36
Parts List
37
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Yaesu FT-225R Specifications
General
Frequency Range
144-148 MHz
Supply Voltage
13.8 V DC
Antenna Impedance
50 ohms
Power Supply
External 13.8 VDC
Modes
FM, SSB, CW
Tuning Steps
5 kHz
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