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The SunSDR2 DX transceiver is the smallest 100W 160M-6M + 2M HF/VHF SDR transceiver in the world, which makes it an ideal companion for your future contests and DXpeditions. It is based on a popular, well-known SunSDR2 PRO model. On top of all our previous radios' functionality, the SunSDR2 DX transceiver offers new features, such as compact hardware design, active cooling, improved power supply system and dedicated connector for a native external ATU. The upgraded hardware design coupled with the ExpertSDR2/3 software makes this high-performance SDR transceiver an outright base station for any DXpeditions and home use.
Hardware improvements in comparison to SunSDR2 PRO:
- TX IMD3 ~37 dB across all HF bands, with 100W output power
- HPF for VHF (100 MHz) to eliminate strong out-of-band stations coming from HF
- LPF for HF (70 MHz) to eliminate strong out-of-band stations coming from VHF
- New VHF LNA chip - PGA103+
- New high-performance built-in stereo audio codec 24-bit with 114 dB dynamic range (CS4272)
- Has a dedicated connector for an external tuner - AAT-100
- Antenna switch supports Predistortion without external devices
Hardware evolution of SunSDR2 DX is described in the User Manual, section 2.2.1.
Main capabilities
- Independent RX path based on DDC (Direct Down-Conversion) architecture
- Independent TX path based on DUC (Direct Up-Conversion) architecture
- Output power: 100W on HF, 80W on 6M and 8W on 2M
- 2 software RXs + SubRX for each of them (4 slices total) + independent wideband Bandscope up to 80 MHz
- 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 for seamless connection with third-party software, the list of software with TCI support
- Professional TX processing module provides the most advanced tuning capability for voice operation
- ExtCTRL connector to control external devices with 8 powerful keys with open collector
- ALC connector for external power amplifiers*
- Supports use of VHF transverters
- An opportunity to use the transceiver as a signal generator via DAC OUT connector (SMA connector)
- An opportunity to use external filters in the middle of the RF path, using ADC IN and RX OUT (SMA connector)
- Monitoring delay in CW mode is about 2-3 ms
- Input for external 10 MHz reference oscillator
- An opportunity to use the transceiver in SO2V mode
- Full duplex or half-duplex modes**
- Antenna switch with 2 HF antenna connectors and separate VHF antenna connector (Mini UHF connectors)
- Internal power-meter for HF and VHF bands and SWR-meter for HF band
- Ethernet LAN interface provides a fast and reliable connection to PC
* ** These functions are supported by the transceiver's hardware, but are not implemented in the ExpertSDR3 software.
Architecture description
SunSDR2 DX complete set
- Transceiver SunSDR2 DX
- External fan, size 140 x 140 mm
- LAN-cable for connection to a local network (1.8m)
- Power cable for connection to a power supply (2m)
- Audio-adapters JACK 6.3mm to JACK 3.5mm (2 pcs.)
- RF Cable Mini UHF HF PL259 1Ft (0.3m 1 pc.)
Additional accessories:
- E-Coder Plus or E-Coder control panel for comfortable tuning
| RF ADC, bit @ MHz | 16 @ 160 |
| ADC type | LTC2209 |
| RX Frequency range, MHz | 0.1...65; 95...155 |
| Independent software receivers | 2 + 2 SubRX |
| Sample rate, kHz @ bit | 39; 78; 156; 312 @ 24 |
| Bandscope, MHz | 80 |
| RX HF filters, MHz | (LPF: 65 or 9 x BPF) + constant LPF: 70 |
| RX VHF filters, MHz | (WideRX: 95-155 or SAW filter for 2M: 144-148) + constant HPF: 100 |
| BDR on HF, dB | 130 |
| BDR on VHF, dB | 129 |
| Sensitivity, uV | 0.2 |
| DR IMD3, dB | 110 |
| RMDR, dB | 119 |
| ATT/Preamp, dB | -20; -10; 0; +10 |
| VHF LNA, dB | 27 |
| RF DAC, bit @ MHz | 14 @ 640 |
| TX Frequency range, M | All amateur bands 160-6; 2 |
| Output power on HF, W | 100 |
| Output power on 6M, W | up to 80* |
| Output power on VHF, W | 7 (up to 8) |
| TX IMD3 on HF, dB | 37 on HF / 30 on VHF |
| Local oscillator TCXO, MHz +/- ppm | 20 +/- 0.5 |
| External 10 MHz oscillator input | + |
| Built-in audio codec, bit / Dynamic Range, dB | 24 / 114 |
| RF input/output | 2HF, 1VHF (Mini_UHF) ADC IN, DAC OUT (SMA) |
| PC interface | LAN 100 Mbit |
| DC voltage range in RX/TX, V | 8...14.8 / 10...14.8 |
| Recommended DC voltage, V | 13.8 |
| Current consumption RX/TX, A | 1.2 / 24 |
| Power consumption RX/TX, W | 16.5 / 330 |
| Operating temperature, �C/�F | 0...+50/ +32...+122 |
| Dimensions L x W x H, cm/inches | 18.5 x 16.5 x 10.5/ 7.48 x 6.69 x 3.14 |
| Weight, kg/lbs | 1.8/ 3.96 |
* 80W until 53MHz, then output power is slightly decreased.
Specifications are subject to change without notice or obligation and specifications are only guaranteed within the amateur radio bands.
| Date | Batch | Serial Numbers | Data |
|---|---|---|---|
|
Feb 2026 |
1st, 2nd China 5th Russia |
|
|
| Date | Batch | Serial Numbers | Data |
|---|---|---|---|
|
Aug 2023 Oct 2023 June 2024 |
8th TW 3rd RU 4th RU |
EED062923XXXXX EED063523XXXXX EED061724XXXXX |
|
Certain SunSDR2 DX units from earlier batches may have hardware upgrades from later revisions, rendering them Gen5 and newer.
| Date | Batch | Serial Numbers | Data |
|---|---|---|---|
|
Oct 2022 |
2nd RU |
EED063122XXXXX |
|
| Date | Batch | Serial Numbers | Data |
|---|---|---|---|
|
Dec 2022 |
7th TW |
EED064622XXXXX |
|
| Date | Batch | Serial Numbers | Data |
|---|---|---|---|
|
Dec 2021 |
6th TW |
EED064421XXXXX |
|
| Date | Batch | Serial Numbers | Data |
|---|---|---|---|
|
July 2020 |
3-4-5th TW 1st RU |
EED062920XXXXX EED060121XXXXX EED062021XXXXX |
|
| Date | Batch | Serial Numbers | Data |
|---|---|---|---|
|
Dec 2019 |
2nd TW |
EED065119XXXXX |
|
| Date | Batch | Serial Numbers | Data |
|---|---|---|---|
|
Nov 2019 |
1st TW |
EED064219XXXXX |
NA |
User Manual v.1.3.2 06-07-22 Manual de Usuario v1.3.2 22-09-20 Terms of the product's warranty
"Setting up SunSDR2 PRO for DUMMIES" by Pete Parisetti, MM0TWX El primer procedimiento 11-09-19
User Manual Addendum (UMA), by Erik EI4KF
Adenda del Manual del Usuario version 6.12 12-05-21
Configuring SunSDR2 for Acom 600S PA (also or 700S and 1200S)
Useful diagrams
ExtCtrl to SPE Expert PAs connection diagram
ExtCtrl to ACOM PAs connection diagram
ExtCtrl to EB104 connection diagram
Recommended by EB104 manufacturer
ExtCtrl to EB104 connection diagram with relay
ExtCtrl to SPE via S-BOX v2.1 (block-diagram)
ExtCtrl to SPE via S-BOX v2.1 (schematic-diagram)
SO2V operation with SDC
Both diagrams can be used for creating two working places with a single SunSDR2 PRO/DX transceiver.
Warning! Software is device-specific! Don't mix software with unsuitable hardware, it may lead to issues that are not covered by warranty!
|
Warning! |
Warning!
Warning! |
ExpertSDR3 minimum system requirements
- CPU: Quad-core Intel Core (i3/i5 or higher), or respective AMD
- RAM: 8 GB
- Graphics: DirectX 11 or higher (Windows only)
- Add-on Software: Latest Microsoft Visual C++ Redistributable (Windows only)
- Network: 100 Mbit/s direct LAN (WLAN not recommended for stability)
- Pro-tip: If ExpertSDR3 shows an error, reinstall Visual C++ as Administrator (Windows only)
Supported OS:
- Windows 10 (1809 or later) x86_64, or Windows 11 x86_64
- Ubuntu 22.04 x86_64, Ubuntu 24.04 x86_64, arm64
- macOS 13.0 or higher (including macOS 15) x86_64, x86_64h, arm64
ExpertSDR3 software is being tested on the latest versions of Windows 11, Linux Ubuntu 24.04, and macOS 15 (with ARM CPU).
To report software bugs, please consider using this page.
ExpertSDR3 and Expert Remote System (ERS)
ExpertSDR3 is a next-generation software suite engineered to provide a powerful, intuitive interface for modern SDRs. Built on a high-performance, cross-platform architecture, it delivers a professional command centre experience featuring high-fidelity audio, lightning-fast spectrum visualisation, and advanced signal processing.
While ExpertSDR3 is a world-class local controller, its true power is unlocked as the flagship component of the Expert Remote System (ERS). This comprehensive, software-defined environment allows you to bridge the gap between the radio and operator, placing the full capability of a high-end radio shack in your hands - anywhere in the world.
Official website: https://cloud-eesdr.com
Full description of ERS is presented in the User Manual, section 14.
Key Benefits:
- Eliminates Geographic Barriers: Operate a high-performance station from a location with ideal radio conditions (low noise, excellent propagation) directly from your computer, anywhere in the world.
- Enables New Operating Scenarios: Perfect for DX-peditions, contests, extended portable operations, or maintaining your station access while traveling.
- Simplifies Station Deployment: Ideal for users who cannot install a full station at their primary residence but have access to a remote site (e.g., a country house).
Designed For:
- Radio amateurs seeking the highest receive signal quality from low-noise areas.
- Operators unable to deploy a full station in an urban environment.
- Enthusiasts who frequently travel but wish to stay active in the hobby.
- Those who want to evaluate transceiver operation and remote capabilities before purchasing hardware.
Ecosystem Components:
- ExpertCloud: A personalized cloud service for centralized account management, device discovery, and secure connection establishment.
- ExpertStarter: A compact hardware/software unit installed at the remote shack, acting as a connectivity bridge.
- Dual User Interface Options: A Web-based Interface for quick access via a browser + The full-featured ExpertSDR3 application for professional operation.
Expert Remote System (ERS) reviewed by Werner Schnorrenberg (DC4KU) (July 2022)
English version / German version
Published in Funkamateur
Output voltage spikes investigation, by Ivan De Cesaris IZ0JNY/HB9ETO (December 2021)
Review published in CQ DL 1/2022 and 2/2022, by Werner Schnorrenberg (DC4KU) (November 2021)
German version / English version
AAT-100 tuner review in Radioamater, by Pavel Misek (OK7PM) (April 2021)
In Czech
Review of the SunSDR2 PRO and SunSDR2 DX by Graziano Roccon (IW2NOY) (March 2020)
Review in Radioamater, by Pavel Misek, OK7PM (January/February 2020)
Part 1 / Part 2
In Czech
ExpertRemote system reviewed by Werner Schnorrenberg (DC4KU) (November 2019)
Published in Funkamateur 3-2020
Shipping:
We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.
Returns:
If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:
Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.
Warranty Terms and Conditions
Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.
For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.
International Warranty information
Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]