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Description

The SunSDR2 QRP is the HF and 6M transceiver with 5W output power and a wide range of capabilities. Thanks to the constantly improving ExpertSDR2 software and advantages of the direct sampling the SunSDR2 QRP can solve any given task for a reasonable price. The SunSDR2 QRP can be used either locally via the LAN interface or remotely using the Expert Remote system, it gives you flexibility in arranging your working place as never before.

Main features

  • Immense functionality for a reasonable price
    Designing each our device, we try to reach the best balance between the price and functionality
  • Full support of the ExpertSDR2 software
    Continuously growing and improving ExpertSDR2 software is 100% compatible with the SunSDR2 QRP and will continue to support it for many years to come, for free!
  • External control connector
    Connect up to 8 external devices to 8 powerful keys with open collectors, such as PAs, external filters, rotate antenna devices etc.
  • Remote control operation
    Using it, you connect PTT and CW-key to the E-Coder panel. Microphone and E-Coder are connected to the remotely set up PC
  • TCI interface 
    Use it for seamless connection with third-party software, the list of software with TCI support
  • No need for an external soundcard
    The SunSDR2 QRP does not require an external sound card and audio cables, just plug your headphones in the transceiver and listen to the air
  • 16-bit ADC at 122.88 MHz
    The SunSDR2 QRP has the best ADC in its price range which provides 122 dB BDR
  • Sample rates: 48-384 kHz
    At the same time, you can use a 60 MHz wide bandscope + 2 software RXs, each has a SubRX
  • Special mode for 768 kHz or 960 kHz sample rate, only for 1 RX + bandscope at the same time
  • Supports 4M band only for RX in the 2nd Nyquist zone

 

Application field

  • HAM amateur HF transceiver
  • Remote operation just for fun and for contests
  • Spectrum analyzer with the wide bandscope up to 60MHz
  • Record IQ files and listen to them afterward

 

Architecture description

Block Diagram SunSDR2 QRP

 Basic configuration:

  • SunSDR2 QRP transceiver
  • LAN-cable (1.8m)
  • Power supply cable
  • RF Cable Mini UHF — HF (PL259) 1Ft (0.3m 1 pc.)

Additional accessories:

Specifications

RF ADC, bit @ MHz 16 @ 122.88
ADC type LTC2165
RX Frequency range, MHz 0.1...55; 70...70.5
Undersampling, MHz 0.1...500
Independent software receivers 2 + 2 SubRX
Sample rate, kHz @ bit 48; 96; 192; 384 @ 24
768; 960 @ 16 (only RX1)
Bandscope, MHz 61
RX HF filters, MHz LPF: 58 + 8 x BPF
RX VHF filters, MHz HPF: 68 + BPF for 4M
BDR on HF, dB 122
Sensitivity, uV 0.1
DR IMD3, not less dB 100
RMDR, dB 107
ATT/Preamp, dB -20; -10; 0; +10
RF DAC, bit @ MHz 14 @ 122.88
TX Frequency range, M All amateur bands 160-6
Output power on HF, W 5
Output power on 6M, W 5
TX IMD3, dB 30
Local oscillator TCXO, MHz +/- ppm 16 +/- 2.5
External 10 MHz oscillator input +
Built-in audio codec, bit 24
RF input/output 1 (Mini-UHF)
PC interface LAN 100 Mbit
DC voltage range in RX/TX, V 8...15 / 10...15
Recommended DC voltage, V 12
Current consumption RX/TX, A 0.3 / 3
Power consumption RX/TX, W 3.6 / 36
Operating temperature, °C/°F 0...+50/ +32...+122
Dimensions L x W x H, cm/inches 18.5 x 10.6 x 4.5/ 6.5 x 3.94 x 1.38
Weight, kg/lbs 0.8/ 1.8

Specifications are subject to change without notice or obligation and specifications are only guaranteed within the amateur radio bands.

ExpertSDR2

Warning! Software is device-specific! Don't mix software with unsuitable hardware, it may lead to issues that are not covered by warranty!

 Windows

installer ExpertSDR2 v.1.3.1 Update9_SunSDR2 QRP
installer ExpertSDR2 x64 v.1.3.1 Update9_SunSDR2 QRP
Firmware v. 8.0 dd: Summer 2021
Published on 30-06-2021
 pdf ExpertSDR2 1.3.1_Release_Notes
ExpertSDR2 1.3.1_Update 9_Release_Notes

Warning!
To use the ExpertSDR2 software, please install the Visual Studio Redistributable 2019 either from the ExpertSDR2 installer or from the official Microsoft website:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

  

  Linux x64

installer ExpertSDR2 v.1.3.1 Update9
Published on 30-06-2021

Warning!
ExpertSDR2 tested on Ubuntu 20.04 x64.

mac oc x macOS

installer ExpertSDR2 v.1.3.1 Update8
Published on 22-12-2020

Warning!
ExpertSDR2 works on macOS Big Sur. ExpertSDR2 crashes during the closing, but it doesn't affect software operation at all.

ExpertSDR3

Welcome to the new generation of SDR software – ExpertSDR3!

In 2021, we turned a new page in our history by launching the ExpertSDR3.

ExpertSDR3 software is being tested on the latest versions of Windows 10, Linux Ubuntu 22.04, and macOS 12 (with Intel CPU).
To report software bugs, please use this page.

ExpertSDR3 1.0.5 Beta

Download Windows Download Linux Download macOS

ExpertSDR3 minimal system requirements:

  • ОS Windows 10 x64 or later versions, Linux Ubuntu 22.04 x64 and the latest patches of versions 11 (BigSur)/ 12 (Monterey)/ 13 (Ventura) of macOS (Intel and Silicon)
  • 4 core CPU Intel Core i3 or Core i5
  • 8 GB RAM
  • Video card with support of DirectX11 or higher
 

Expert Remote System (ERS)

Server (Starter) for Expert Remote System, build 20221028

Download Windows Download Linux

Download ARM64 linux

Download ARM64 RPi
 
 

Videos

 

Release notes

Release Notes for alpha/beta versions of the ExpertSDR3 (link to a Google Drive folder)
Notas de la versión beta 1_0_0 de ExpertSDR3


Functions added in the ExpertSDR3 0.8.1:

  • Added a module where you can select third-party software to be launched along with the ExpertSDR3
  • Implemented Scalable waterfall
  • Now you can control waterfall speed
  • For ColibriNANO implemented auto-preamp
  • For ColibriNANO implemented “ADC overload” indication
  • Implemented ExpertSync module, the server is a part of the ExpertSDR3 Device Manager, and clients are in every ExpertSDR3 client instance. It allows you to sync tuning frequencies, modes, filter BW and RIT among all EE devices
  • You can assign overall volume and monitoring volume to E-Coder knobs 
  • Fixed bugs from the previous alpha


Functions added in the ExpertSDR3 0.8.0:

  • E-Coder panel support
  • ExpertRemote system for RX mode
  • TX modulator settings
  • PTT function
  • Break-In function for each software RX
  • Firmware update capability
  • New TCI 1.5 (specification)
  • Fixed numerous bugs from the previous alpha
  • Memory panel operation was improved (CTCSS / repeater settings are stored in memory, now you can apply them for each receiver)
  • Improved Band Manager (added: PA key control, set max output power for per band, and adjust additional preamp/ATT coefficient for external preamp/ATT)

Articles and Reviews

Expert Remote System (ERS) reviewed by Werner Schnorrenberg (DC4KU) (July 2022)
English version / German version
Published in Funkamateur

Release Schedule

ExpertSDR3 1.0.4 Beta - 5th of May 2023

ExpertSDR3 1.0 Final - 25th of December 2023

During the year, we will publish minor releases of the program with bug fixes, without reference to specific dates.

Articles and Reviews

Expert Remote System (ERS) reviewed by Werner Schnorrenberg (DC4KU) (July 2022)
English version / German version
Published in Funkamateur

Article by Marc Schijven, PE1FJN (October 2019)

ExpertRemote system reviewed by Werner Schnorrenberg (DC4KU) (November 2019)
Published in Funkamateur 3-2020