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FT-780R
Yaesu FT-780R Amateur Transceiver Manuals
Manuals and User Guides for Yaesu FT-780R Amateur Transceiver. We have
1
Yaesu FT-780R Amateur Transceiver manual available for free PDF download: Instruction Manual
Yaesu FT-780R Instruction Manual (51 pages)
Microprocessor controlled 0.7 meter all-mode transceiver
Brand:
Yaesu
| Category:
Transceiver
| Size: 9 MB
Table of Contents
Contents
2
General Description
3
Specifications
4
Semiconductor
5
Accessories
5
Front Panel Controls and Switches
6
Sql
6
Vol
6
Step
6
YM-40 Microphone Connections
7
ON Air
7
Busy/Mod
7
Clear Indicator
7
Rear Panel Connections and Switch
8
External Speaker Connections
8
Tone in Connector
8
ACC Connector
8
Underside Cabinet Switches
9
Power Cord Connections
9
Sat
9
Scan
9
Installation
10
Antenna Considerations
10
Mobile Installation
10
Power Transformer Primary Connections
10
Base Station Installation
11
Power Supply
11
Operation
12
Initial Check
12
Frequency Selection Using Main Dial
12
Receiver Operation
12
Memory Operation
13
Scanner Operation
13
CW Mode
13
FM Mode
13
Priority Channel Operation
14
Initializing Frequency/Backup Feature
14
Repeater Operation
14
Satellite Operation
14
Circuit Description
18
Receiver
18
S-Meter Circuit
18
Squelch Circuit
18
NB Circuit
19
Transmitter
19
Ssb
19
Fm
19
Power Amplifier Circuit
20
Power Control Circuit
20
Tone Burst Circuit
20
ALC Circuit
20
PLL Control Circuit
21
Maintenance and Alignment
22
Equipment Required
22
Unit Locations
22
Performance Checks
23
PO Test Setup
23
Part Locations
23
RX Sensitivity Test Setup
24
Bottom View
24
Receiver Section
25
2Nd Local Oscillator
25
Alignment and Test Points for Receiver
25
2Nd if Amplifier
26
RF Amplifier
26
3Rd Local Oscillator
26
SSB Carrier Oscillator
26
Transmitter Section
27
Noise-Blanker Adjustment
27
Squelch Adjustment
27
Bandpass Filter Adjustment
27
CW Carrier Oscillator
28
ALC Adjustment
28
PO Meter Adjustment
28
AFP Adjustment
28
Low Power Output Setting
29
FM Modulator Adjustment
29
SSB Modulator Adjustment
29
SSB Carrier Point Adjustment
29
PLL Section
30
VCV Lines Adjustment
30
Multiplier Stage Adjustment
30
Alignment and Test Points for PLL
30
PLL Bandpass Filter Adjustment
31
PLL Reference Oscillator and PLL Local Oscillator Adjustment
31
Parts List
32
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