QRP Labs QCX+ Manuals

Manuals and User Guides for QRP Labs QCX+. We have 2 QRP Labs QCX+ manuals available for free PDF download: Assembly Instructions Manual, Operating Instructions Manual

QRP Labs QCX+ Assembly Instructions Manual (139 pages)

Single band, high performance 5W CW Transceiver with built-in alignment and test equipment, iambic keyer, WSPR beacon mode, and more

Brand: QRP Labs | Category: Transceiver | Size: 12 MB

Table of Contents
2
Introduction
5
Parts List
6
Assembly - General Guidelines
11
Inventory Parts
17
Wind and Install Transformer T1
18
Install IC2 Socket
24
Install DIP Integrated Circuits IC3, IC5-10
25
Install All 100Nf (0.1Uf, "104") Capacitors
26
Install All 470Nf, "474" Capacitors
27
Install All 1Nf, "102" Capacitors
28
Install All 10Nf, "103" Capacitors
29
Install 47Nf, "473" Capacitors
30
Install 39Nf, "393" Capacitor
31
Install 2.2Nf, "222" Capacitors
32
Install 33Nf, "333" and 3.3Nf, "332" Capacitors
33
Install Capacitors C25 and C26 from the Low Pass Filter Kit
34
Install Capacitors C27 and C28 from the Low Pass Filter Kit
35
Install Capacitor C30
36
Install Capacitors C5 and C8
37
Install 1Uf, "105" Capacitors C21, and C22
38
Install 2.2Uf, "225" Capacitor C31
39
Install 1N4148 Diodes
40
Install 1N5819 Diode
41
Install 20Mhz Crystal XTAL1
42
Install 27Mhz Crystal XTAL2
43
Install All Main PCB 10K Resistors
44
Install All Main PCB 1K Resistors
45
Install All Main PCB 3.3K Resistors
46
Install All 100-Ohm Resistors
47
Install 120K Resistors
48
Install 33K Resistors
49
Install 47K Resistors
50
Install 36K Resistors
51
Install the Main PCB 270-Ohm Resistor
52
Install 1.2K Resistor R42
53
Install 150-Ohm Resistor R41
54
Install 3.9K Resistor R61
55
Install 4.3K Resistor R18
56
Install 5.1K Resistor R11
57
Install 750K Resistor R35
58
Install 500-Ohm Multi-Turn Trimmer Potentiometer
59
Install 50K Multi-Turn Trimmer Potentiometers
60
Install Two 47Uh Inductors
61
Install 10Uf Capacitors
62
Install 470Uf Capacitors
63
Install 30Pf Trimmer Capacitor C1
64
Install MPS751 Transistor Q6
65
Install All BS170 Transistors
66
Install 2X3-Pin In-Circuit Programming Header
67
Install Power Connector
68
Install 7805 Voltage Regulator IC11
69
Wind and Install Toroid L4
70
Wind and Install Toroid L2
72
Wind and Install Toroids L1 and L3
73
Install RF Output BNC Connector
74
Install 3.5Mm Stereo Jack Connectors
75
Install Header Pin Connectors JP3, JP4 and JP5
76
Install Nylon Header Spacers if Required
77
Install Front Panel PCB Resistors R44 and R65
79
Install 270-Ohm Resistor R48
79
Install 1K Resistor R45
80
Install 10K Resistor R46
80
Install 2X5-Pin Header Connector Socket JP1
81
Install Two 2X3-Pin Header Connector Socket JP2 and JP3
81
Install 22K Trimmer Potentiometer R47
82
Install Button Switches S2 and S3
82
Install On/Off Switch S1
83
Install Rotary Encoder
83
Install Gain Control Potentiometer
84
Install LCD Module
85
Install Knobs
86
Install Optional AGC Module
86
Install Optional TCXO Module
86
Install Microcontroller
89
Plug Together the Two Boards
89
Installation in Optional Enclosure
89
Connections for Basic Operation
90
Adjustment and Alignment
91
Experiments, Modifications and the QCX+ Dev Kit
96
QCX+ GPS Interface and PTT Output
99
QCX+ CAT Port
102
Operating Instructions
102
Circuit Design of the QCX
103
Block Diagram and Summary
103
Circuit Diagram
103
Synthesised Oscillator
105
Transmit/Receive Switch
107
Band Pass, Phase Splitter, QSD and Pre-Amps
107
90-Degree Audio Phase Shift
108
CW Filter
109
Audio Amplifier
110
Transmit Signal Routing and PA Driver
111
Class-E Power Amplifier
112
Low Pass Filter
114
Key-Shaping Circuit
114
Microcontroller
115
Optional GPS Interface
120
In Circuit Programming (ISP) Interface
121
Test Equipment
121
Voltage Regulator
123
Fault-Finding
124
Blank LCD or Blocked LCD
124
No Backlight at All
124
A Row of Blocks Appears on the Top Row
124
DC Voltage Readings
125
RF Power Output Check
127
Measurements
129
Equipment
129
Transceiver Current Consumption
129
Transmitter Power Output
130
Class-E Power Amplifier Drain Waveform
131
RF Envelope Key-Shaping
131
Low Pass Transmitter Harmonic Output Filter Characteristics
132
Band Pass Receiver Input Filter Characteristics
132
Quadrature Sampling Detector Bandwidth
135
CW Filter Response
136
Unwanted Sideband Rejection
137
Resources
138
Document Revision History
138

QRP Labs QCX+ Operating Instructions Manual (52 pages)

5W CW Transceiver kit

Brand: QRP Labs | Category: Transceiver | Size: 0 MB

Table of Contents
2
1 Overview of Features

3
2 Display Elements

5
3 Operator Controls

6
- Tune Rate
  6
- Keyer Speed
  7
- Rit
  7
- VFO Mode
  8
- VFO A/B Operations
  8
- Frequency Presets
  8
- Automated Message Transmission Mode
  9
4 Menu System

10
- Saving Current Operating Parameters (VFO Frequency Etc)
  10
- Types of Configuration Menu Item
  11
- Editing a Configuration Menu Parameter
  11
- Editing a LIST Parameter
  12
- Editing a BOOLEAN Parameter
  12
- Editing a NUMBER Parameter
  12
- Editing a TEXT Parameter
  13
- Frequency Presets Menu
  14
- Messages Menu
  14
- VFO Menu
  15
- Keyer Menu
  17
- Decoder Menu
  21
- Beacon Menu
  23
- Other Menu
  30
- Alignment Menu
  34
- Test Equipment
  38
- CAT Control Commands (PC Remote Operation)
  41
- Operation Reference "Cheat Sheet
  51
5 Operation Reference “Cheat Sheet”

52
6 Resources

52
7 Document Revision History

52

QRP Labs Categories

Transceiver

GPS Amplifier Microcontrollers Enclosure

More QRP Labs Manuals

QRP Labs QCX+ Manuals

QRP Labs QCX+ Assembly Instructions Manual (139 pages)

Table of Contents

QRP Labs QCX+ Operating Instructions Manual (52 pages)

Table of Contents

1 Overview of Features

2 Display Elements

3 Operator Controls

4 Menu System

5 Operation Reference “Cheat Sheet”

6 Resources

7 Document Revision History

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QRP Labs Categories