Radioddity QR20 Manuel utilisateur
Full Mode
SDR Transceiver
V1.0 May. 2021
User Manual
About Radioddity
“You, our friend and customer, are at the forefront of what we do.”
Thank you for purchasing Radioddity products. On behalf of our caring and responsive Customer
Support team, we strive to fulfill that promise and better meet your needs every day.
In order to protect your rights and interests, please read the terms of Warranty Policy.
Copyright
Radioddity reserves all rights to this manual, and reproduction of any part of this manual is prohibited
without permission.
Warning
Please read this manual fully before operation so as to get a good understanding of the QR20’s
capabilities and functions.
When using an external power supply, carefully check the polarity of the power cord and do not
reverse the polarity.
The limited warranty of this radio does not include damage caused by an external power
connection error or damage caused by improper power supply voltage.
Qualified technicians shall service this equipment only.
Do not tamper the transceiver for any reason.
Do not use any transceivers with a damaged antenna. If a damaged antenna comes into contact
with your skin, a minor burn can result.
Turn off your transceiver prior when entering any area with explosive and flammable materials.
Do not charge your transceiver in the area with explosive and flammable materials.
To avoid electromagnetic interference and/or compatibility conflicts, please turn off your
transceiver in any area where posted notices instruct you to do so.
Turn off your transceiver before boarding an aircraft; any use of a radio must be in accordance
with airline regulations or crew instructions.
Turn off your transceiver before entering a blasting area.
Do not place a transceiver over an airbag area or in the airbag deployment area for vehicles with
an airbag.
Do not expose the transceiver under direct sunlight over a long time, nor place it close to a
heating source.
When transmitting with a transceiver, hold it with the microphone 3 to 4 centimeters away from
your lips; also make sure the antenna stays at least 2.5 centimeters away from your body when
transmitting.
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Summary
The Radioddity QR20 is an ultra-portable full-frequency full-mode SDR radio with a reception from
100kHz to 2GHz and transmit from 160m to 70cm. The operation modes include SSB, CW, AM, FM,
RTTY and digital modes. It includes multiple advanced functions and features as an SRD radio
station. The QR20 is designed with both USB and DC interface power supply modes.
The display adopts high-brightness and high-resolution liquid crystal display with adjusted backlight
brightness, which can be clearly displayed outdoors. The panel is designed with full keyboard, which
is convenient for various operations. The keyboard is with backlight to help operate this radio in a
dark environment. The QR20 has a built-in Bluetooth module, a USB cable integrated sound card
and a serial port. You can easily control the radio with a single USB cable.
The QR20 has a lot of advanced features that are only available in large base stations. This gear has
dual VFO mode, different frequency operation function, intermediate frequency offset adjustment,
receiving frequency fine-tuning, intermediate frequency noise suppression, AGC speed selection, RF
gain adjustment, squelch control, front attenuator, AM aviation communication reception, AM/FM
Broadcast reception, built-in telegraph automatic key, automatic key-point ratio adjustment, built-in
CTCSS analog tone, automatic shutdown function (APO), transmission timeout function (TOT);
connection with computer and computer-aided control function, copy function, etc.
In addition, the QR20 has several modules to customize more functions.
Features:
1. Real-time spectrum
2. Waterfall chart
3. Supports FT8 mode
4. Using software-defined radio technology
(SDR), with multi-band and multi-mode
(SSB, CW, RTTY, AM, FM, and optional
DMR) support
5. Double conversion circuit structure
6. IF width and IF shift hardware and
software can be modified to provide
powerful IF interference suppression
7. DSP digital noise reduction
8. Built-in 160-6 meters high-speed
automatic antenna tuner
9. Built-in electronic key controller, all
parameters can be set flexibly
10. Built-in sound card with IQ and audio output
11. USB TYPEC3.1 interface for power supply
and computer connection
12. High precision TXCO ± 0.5ppm (-10-60 ℃)
13. Ultra-wide working voltage range: 5-32VDC
14. Power supply reverse polarity protection
15. GPS / BeiDou, GSM, electronic compass
(acceleration, angle sensor) (optional)
16. GPS time service (requires optional
GPS module)
17. Built-in UTC clock
18. Voltage display
19. VOX
20. Support RTTY, DTU, CW via keyboard
21. Ultra-light weight: ≤4.4lb (2kg)
22. IF IQ signal output available (which enables
DRM decoding via PC)
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Table of Contents
Accessories and Options
Specifications
Panel and Interface
Front panel
Key function
Indicator Light
Main Interface
Rear panel interface
Interface definition
Radio Setting and Operation
Turn on/off QR20
Frequency band selection
Frequency selection
Mode selection
Transmit power selection
Receive volume, MIC gain
Hand microphone selection
Channel saving
Band selection operation
Different frequency operation
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AF audio setting
RF setting
USB sound card data output format setting
Transceiver frequency offset setting
Transceiver mode setting
Tune operation
A/B frequency operation
NR/NB noise suppression setting
Spectrum and waterfall display setting
Spectrum parameter display setting
Digital filter operation
Application Menu Operation
CAT Control
Receiving Operation
Transmitting Operation (Locked by Default)
SSB communication
CW communication
FM communication
Repeater operation
AM communication
Data communication RTTY
QR20 Firmware Upgrade
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Accessories and options
Built-in Module
WFM
Bluetooth module
Cable Hand Mic
Built-in sound card
Automatic antenna tuner
Optional Module
GPS + GSM
Electronic compass (Altitude meter)
DMR
External VFO Knob
Specifications
Transmitter Parameters
Receiver Parameters
SDR
DMR (optional), SSB, CW, RTTY, AM, FM
1Hz
1.800—2.000, 3.500—3.900, 5.351.5—5.366.5, 7.000— 7.200,
10.100—10.150, 14.000—14.350, 18.068— 18.168, 21—21.450,
24.890—24.990, 28—29.7, 50—54, 134— 170, 400—450MHZ
HF + 6m: SSB: (1-20W)
CW: (0.1-20W)
FM: (0.1-20W)
AM: (1-5W)
VHF: SSB / CW / FM (0.5-10W)
UHF: SSB / CW / FM (0.5-5W)
TX: 13.8V-6A (20W)
RX: 13.8V-0.25A typical value, 0.5A (highest brightness, audio peak)
<50db
1.8-54MHZ: ≥50db
144-146MHZ: ≥60db
430-440MHZ: ≥60db
99 channels
Transmitter Architecture
Transmission Mode
Frequency Resolution
Transmit Frequency
Range*1
Output Power
Power Current
Carrier Suppression
Spurious Suppression
Channels
Receiver Architecture
Reception Mode
Reception
Frequency Range
IF Bandwidth
Sensitivity *3
SDR
DMR (optional), SSB,CW, RTTY, AM, FM
100kHz—2GHz * 2
20kHz
SSB / CW: (BW: 2.4kHz @ 10dB S / N)
0.18uV (1.8-54MHZ)
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01
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02
Antenna Tuner Parameters
Spectral Parameters
Tuning frequency
Range
Tuning Impedance
Range
Tuning Accuracy
Tuning Time
Tuning Mode
1.8—54MHz
16.7Ω–150Ω Unbalanced (standing wave ratio is better than 1: 3)
VSWR: 1: 1.5 or less
2-5S (whole section 10 seconds)
Automatic
Conventional Parameters
Size
Weight
Voltage Range
Antenna Interface
170X120X45mm (excluding projections)
<2KG
RX:5-32V
TX: 5- 12V transmit power limit
12-18V full power output
18-32V transmit power limit
M
Sensitivity *3
Intermediate Frequency
Suppression
Image Suppression
Audio Output Power
0.25uV (144-146MHZ)
0.25uV (430-440MHZ)
AM: (BW: 6kHz @ 10dB S / N)
15uV (0.3-1.8MHZ)
2uV (1.8-54MHZ)
2uV (144-146MHZ)
2uV (430-440MHZ)
FM: (BW: 15kHz @ 12dB S / N)
0.5uV (28.0-29.7MHZ)
0.25uV (50-54MHZ)
0.3uV (144-500MHZ)
0.5uV (430-440MHZ)
≥70db
≥80db
2W (10% distortion rate, 4Ω Load, 3KHZ)
Spectral Bandwidth 48K radio frequency spectrum FFT
Note *1: Frequency range can vary according to different countries or regions, the actual frequency
by local legal provisions.
Note *2: Data retention.
Note *3: To be calibrated. The final interpretation reserved to manufacturers.
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03
Panel control and operation
Front panel
Key function
①Numeric keyboard
②LCD Monitor
③Function keyboard
④Headphone interface
⑤Wired hand microphone interface
⑥Receiving indicator
⑦Transmitting indicator
Key
Power
BAND
SPLIT
AF
RF
R/X
MODE
TUNE
A/B
NR
Short Key Function
Switch the standing wave table (VSWR),
ALC, MIC audio indication
Frequency band selection
Different frequency on, different
frequency off
Volume, MIC gain, MIC audio
compression, ground bass, treble
Radio frequency gain, Intermediate
frequency gain, AGC、SQL、ATT
RIT receiving frequency offset, IT
transmitting frequency offset
Mode setting
Antenna tuner on and off
A/B Band
NB or NR options
Long Key Function
Power on, power off
CW setting
Tone setting
Channel/VFO mode selection
USB data output format selection
Transceiver frequency offset switch
USB/LSB, NFM/WFM/CWR switching
Tuning start/stop
A=B Band
Spectrum only, waterfall only, display
both spectrum and waterfall
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04
Indicator light
Status
On
Off
Flashing
Red
Transmitting
Green
Receiving
Error
Key
DSP
PA
BW
Direction
Key Left
Direction
Key Right
Direction
Key Up
Direction
Key Down
MENU
Short Key Function
NR, NB, PEAK threshold setting
Transmitting power setting
Digital filter selection
Left selection or decrement operation
Right selection or increment value
Up operation
Down operation
Confirm
Long Key Function
Turn off NR or NB
High-low power switching
Spectrum bandwidth setting, spectrum
reference level setting, spectrum refresh
rate setting
*
*
Fast frequency adding
Fast frequency reduction
Application interface; Back
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05
Main interface
1. Digital filter
2. Waterfall illustration
3. Spectrum
4. Band A/B instructions
5. Mode display
6. SWR, AUD, ALC meter
7. S-meter (transmitting power meter
when transmitting)
8. Transmitting frequency
9. Receiving frequency
10. Voltage display
11. Tune enable display
12. Power display
13. Digital compass
14. LoRa display
15. GPS display
16. Bluetooth display
17. Time display
18. Digital filter bandwidth
19. Spectrum bandwidth
20/21. NR/NB display
22. RIT/XIT frequency offset
6
5
4
3
2
7 8 9 10
11
12
13
14
15
16
17
18
19
1
20
21
22
Table des matières
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