HobbyPCB IQ32 User manual

IQ32 SDR Transceiver
Operations Manual
Software Version 1.200
Manual Revision February 19, 2020

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Table of Contents
Introduction................................................................................................................................ 1
Specifications ............................................................................................................................ 2
Interface and Control Reference................................................................................................ 3
Left Side Panel....................................................................................................................... 3
Right Side Panel.................................................................................................................... 4
Front Panel ............................................................................................................................ 5
Rotary Encoders .................................................................................................................... 5
Screen Navigation.................................................................................................................. 6
Installation ................................................................................................................................. 8
Required Accessories ............................................................................................................ 8
Optional Accessories.............................................................................................................. 8
Setup...................................................................................................................................... 8
Startup ................................................................................................................................... 8
Configuration.......................................................................................................................... 8
Firmware Upgrade ................................................................................................................. 9
Public Source Files ................................................................................................................ 9
Operation................................................................................................................................. 10
Non-Volatile Memory.............................................................................................................11
Home Screen....................................................................................................................... 12
Mode Selection.................................................................................................................... 13
Settings Screens.................................................................................................................. 16
Main Settings.................................................................................................................... 17
Advanced Settings............................................................................................................ 18
Function Editing with a Keyboard..................................................................................... 20
Keyboard Fn Setting......................................................................................................... 21
Screen Fn Settings........................................................................................................... 29
Tags Settings.................................................................................................................... 32
Frequency Tuning ................................................................................................................ 36
Frequencies Screen............................................................................................................. 37
Receive Filter Settings......................................................................................................... 40
Keyer Operation................................................................................................................... 41
Hang Time........................................................................................................................ 42

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Screen Calibration ............................................................................................................... 43
CW Operation.......................................................................................................................... 44
Split Operation.................................................................................................................. 45
Keyboard Operation in CW............................................................................................... 47
FFT Display...................................................................................................................... 48
SSB Operation......................................................................................................................... 49
PSK Operation......................................................................................................................... 51
AGC Modes Explained ............................................................................................................ 54
CW AGC .............................................................................................................................. 54
Digi AGC.............................................................................................................................. 54
SSB AGC............................................................................................................................. 54
Off........................................................................................................................................ 54
Radio Setup............................................................................................................................. 55
Receiver............................................................................................................................... 55
Transmitter........................................................................................................................... 55
Frequency Calibration.......................................................................................................... 57
S Meter Calibration .............................................................................................................. 59
Appendix –Tags, Macros, Buttons, and Keyboard.................................................................. 60
Tags ..................................................................................................................................... 60
Macros................................................................................................................................. 61
Default On-Screen Button Functions.................................................................................... 62
SSB HOME SCREEN Buttons.............................................................................................. 62
CW HOME SCREEN Buttons ............................................................................................... 62
PSK HOME SCREEN Buttons.............................................................................................. 62
Keyboard Function Keys...................................................................................................... 63
Block Diagrams ....................................................................................................................... 64
Keyboard Cheat Sheet ............................................................................................................ 65
F1: Call CQ.......................................................................................................................... 65
F2: Send Your Name and QTH............................................................................................ 65
F3: Send your Rig information ............................................................................................. 65
F4: Send your Antenna information...................................................................................... 65
F5: Confirm Called Station Name and Callsign, and send Back to You (BTU)..................... 65
F6: Send Thank You and Best Wishes (73's)....................................................................... 65
F7: Change to USB mode.................................................................................................... 65

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F8: Change to LSB mode..................................................................................................... 65
F9: Change to CW mode ..................................................................................................... 65
F10: Toggles Transmitter Between Receive and Transmit Mode ......................................... 65
F11: Clear Transmit Buffer ................................................................................................... 65
F12: Step through Memory Buttons, Memory 1 to Memory 5............................................... 65
LEFTARROW and RIGHTARROW: Increase or decrease tuning resolution...................... 65
UPARROW and DOWNARROW: Step through Memory 1 to Memory 14.......................... 65

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Table of Figures
Figure 1: Left Side Panel........................................................................................................... 3
Figure 2: Right Side Panel......................................................................................................... 4
Figure 3: Front Panel................................................................................................................. 5
Figure 4: Sign-On ("Splash") Screen....................................................................................... 10
Figure 5: PSK Home Screen ................................................................................................... 10
Figure 6: CW Home Screen..................................................................................................... 12
Figure 7: Mode Icon................................................................................................................. 13
Figure 8: Mode Selection Screen ............................................................................................ 13
Figure 9: USB Button............................................................................................................... 13
Figure 10: USB Home Screen................................................................................................. 13
Figure 11: CW Button .............................................................................................................. 14
Figure 12: CW Home Screen................................................................................................... 14
Figure 13: PSK Button............................................................................................................. 14
Figure 14: PSK Home Screen ................................................................................................. 14
Figure 15: Tune Button............................................................................................................ 15
Figure 16: Tune Operation....................................................................................................... 15
Figure 17: Setting WidgetAbove the Left Rotary Encoder....................................................... 16
Figure 18: Settings Menu Screen........................................................................................... 16
Figure 19: Advanced Screen ................................................................................................... 18
Figure 20: Move Cursor with Arrow Key .................................................................................. 20
Figure 21: Use TAB to Select the Label................................................................................... 20
Figure 22: Keyboard Fn Screen............................................................................................... 21
Figure 23: Function Key F1 ..................................................................................................... 22
Figure 24: Function Key F2 ..................................................................................................... 23
Figure 25: Function Key F3 ..................................................................................................... 23
Figure 26: Function Key F4 ..................................................................................................... 24
Figure 27: Function Key F5 ..................................................................................................... 24
Figure 28: Function Key F6 ..................................................................................................... 25
Figure 29: Function Key F7 ..................................................................................................... 25
Figure 30: Function Key F8 ..................................................................................................... 26
Figure 31: Function Key F9 ..................................................................................................... 26
Figure 32: Function Key F10 ................................................................................................... 27
Figure 33: Function Key F11.................................................................................................... 27
Figure 34: Function Key F12 ................................................................................................... 28
Figure 35: Screen Fn Screen................................................................................................... 29
Figure 36: SSB AGC Button Programming Screen.................................................................. 30
Figure 37: SSB Waterfall / Spectrum Button Programming ..................................................... 30
Figure 38: SSB Filter Button Programming.............................................................................. 31
Figure 39: SSB Mode Button Programming............................................................................. 31
Figure 40: Tag Screen ............................................................................................................. 32
Figure 41: MyName Tag .......................................................................................................... 33
Figure 42: MyCall Tag.............................................................................................................. 33
Figure 43: QTH (location) Tag ................................................................................................. 34

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Figure 44: Rig (radio type) Tag ................................................................................................ 34
Figure 45: Ant (antenna type) Tag ........................................................................................... 35
Figure 46: T6 Tag..................................................................................................................... 35
Figure 47: Frequency Tuning................................................................................................... 36
Figure 48: Minimum Tuning Step of 1 Hz................................................................................. 36
Figure 49: Tuning Step of 100 Hz............................................................................................ 36
Figure 50: Memory Manager Screen....................................................................................... 37
Figure 51: Memory Button Label Editing.................................................................................. 38
Figure 52: Transverter Offset Adjustment................................................................................ 38
Figure 53: Setting F Offset....................................................................................................... 39
Figure 54: Transverter Operating Frequency........................................................................... 39
Figure 55: Filter Selection........................................................................................................ 40
Figure 56: Keyer Modes .......................................................................................................... 41
Figure 57: Splash Screen........................................................................................................ 43
Figure 58: Calibration Screen................................................................................................. 43
Figure 59: CW Home Screen................................................................................................... 44
Figure 60: CW Split Operation Setup Screen.......................................................................... 45
Figure 61: CW Split Operation - Transmit Frequency Screen.................................................. 45
Figure 62: CW Split Operation Screen .................................................................................... 46
Figure 63: Station Call Sign and Name.................................................................................... 47
Figure 64: FFT Spectrum View................................................................................................ 48
Figure 65:Waterfall View.......................................................................................................... 48
Figure 66: SSB Home Screen ................................................................................................. 49
Figure 67: PSK Home Screen ................................................................................................. 51
Figure 68: VFO Tuned to 7070kHz.......................................................................................... 51
Figure 69: Decoded Signal at 14,073,548Hz........................................................................... 52
Figure 70: VFO Set At 14071kHz ............................................................................................ 52
Figure 71: Starting a QSO With Function Key F1.................................................................... 53
Figure 72: Text From The Keyboard........................................................................................ 53
Figure 73: Proper Mic Gain...................................................................................................... 55
Figure 74: Low Mic Gain.......................................................................................................... 55
Figure 75: High Mic Gain......................................................................................................... 55
Figure 76: Set TX Power Level................................................................................................ 56
Figure 77: Tuning in 15MHz WWV .......................................................................................... 57
Figure 78: Red line is WWV..................................................................................................... 57
Figure 79: Red Cursor, Blue WWV.......................................................................................... 58
Figure 80: Frequency is calibrated .......................................................................................... 58
Figure 81 S Meter Calibration.................................................................................................. 59
Figure 82: RF Section Block Diagram ..................................................................................... 64
Figure 83: Digital Section Block Diagram ................................................................................ 64

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Terminology
•Screen Names: All screen names have the first letter capitalized and appear in Bold
with Small Caps –SETTING SCREEN
•Button Names: All button names have the first letter capitalized and the complete name
in Bold, no small caps - Advanced
•Widget Names: All widget names have the first letter capitalized and the complete
name in Bold - Mode
•Tags: All tags are bold and blue - <StnCS> (51,51,255)
•Macros: All macros are bold and violet - <USB> (153, 0, 255)
•Fn Keys: Keyboard Fn keys are bold and highlight yellow - F3
•Widget and Icon refer to the same on-screen feature
•HOME SCREEN and OPERATION SCREEN refer to the same screen
•Factory default values are bold and green - 0 = Straight (0, 176, 80)

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Introduction
Thank you for purchasing a HobbyPCB IQ32 transceiver. On behalf of all our design and de-
velopment contributors, we appreciate your support of our products.
The HobbyPCB IQ32 is a 5 Watt Software Defined Radio. It operates on all amateur radio fre-
quencies from 80M up to 10M. Native operating modes are USB, LSB, CW and PSK31. There
is a built in keyer for CW operation and a PSK encoder and decoder for PSK operation.
The IQ32 does not require an external computer to take advantage of all the features.
The operating firmware of the IQ32 is easily upgraded by downloading the latest firmware to a
memory stick. The memory stick is connected to the USB port on the radio and the radio han-
dles the upgrade.
Connect a suitable antenna or dummy load and a power supply. Remember, you are respon-
sible for the radio, and you must ensure that any emissions are on a proper frequency (one for
which you are properly licensed and allowed to transmit).

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Specifications
•Frequency Range:
oReceive: 3 –30MHz
oTransmit: 80, 60, 40, 30, 20, 17, 15, 12, 10M Amateur Bands. Performance is
guaranteed on these bands.
•Receiver
oFilters: 0 –4000, 300 –3300, 300 - 2700, 300 - 1300, 400 - 700, 500 - 600Hz
oSensitivity: MDS < -128 dBm on 80M dropping to < -135 dBm on 10M
oNoise Figure: < 8dB
oAGC: CW, Digi, SSB, Off
•Transmitter
oTransmit Power: 5 Watt typical, 4 Watt minimum
▪Power Amp: Class A
oLO Feed-thru < -50 dBc @ 5W output
oSpurious and Harmonics < -50dBc typical
oBuilt-In Keyer
▪5 to 35 WPM
▪Iambic Mode A & B
▪Adjustable dot dash weighting
▪Straight key mode
•DC Power: 13.8VDC, 2A max.
o10VDC minimum
o15VDC maximum
•Antenna Connector: BNC
•Antenna Port: The IQ32 can tolerate short duration antenna faults ranging from short to
open circuit. Good operating practice dictates that a match of 3:1 or better is required
for efficient long-term operation
•Size: 172mm x 105mm x 75mm, 6.8” x 4.1” x 3.0”
•Weight: < 700 grams, 1.5 LBs
•Display: 3.2” Color LCD Touchscreen
•Operating Modes: USB, LSB, CW, PSK31
•Microphone: RS-UV3 Speaker Mic or compatible device
•DSP Processor: STM32F407, 32 Bit
oSample rate: 8000Hz
•Keyboard: PS2 Keyboard

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Interface and Control Reference
Left Side Panel
1. RX I/Q Output –3.5mm TRS
a. Tip –I
b. Ring –Q
c. Sleeve –Ground
2. Headphone Output - 3.5mm TRS
a. Tip –Left
b. Ring –Right
c. Sleeve –Ground
3. Speaker/Mic –3.5mm TRRS
a. Tip –SPKR
b. Ring 1 –MIC
c. Ring 2 –PTT
d. Sleeve –Ground
4. CW Key –3.5mm TRS
a. Tip –Dit (Straight Key)
b. Ring –Dot
c. Sleeve –Ground
Figure 1: Left Side Panel