SunSDR2 DX is a direct sampling 100 watt SDR transceiver developed for the serious DX:er and contest operator. It covers all HF bands plus 50 MHz and 144 MHz VHF bands with a general coverage receiver. It combines high performance and 100 watt transmit power in a small package with a LAN interface for maximum flexibility. Remote control over DSL or mobile 3G or 4G connections provide a full SDR experience using the Expert Remote System.
The SunSDR2 DX transceiver based on the well-known SunSDR2 PRO transceiver and features several hardware improvements. It is a 100W-HF; 80W-6M; 8W-2M transceiver, very compact, has a fan for active cooling and improved supply system, meaning it’s perfectly suited for DXpeditions and contest operators. Also, we’ve added a separate connector for an external ATU, thus SunSDR2 DX has all the functionality you got used to in our radios and even more. Improved hardware along with the ExpertSDR2 software makes this high-performance SDR transceiver the perfect base station. The evident choice for a true contester!
SunSDR2 DX Improvements
100 watt transmit power on HF, 80 watt on 50 MHz!
New ATU connector for future antenna tuner option
External Fan connector
External fan included
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
Improved VHF LNA (PGA103+ chip)
Newhigh-performance built-in stereo audio codec 24 bit with 114 dB dynamic range
Anderson Powerpole power connector
Ground connector added
Sturdy DIP-type ExtCtrl connector
Improved PCB topology
Lower power consumption and improved power dissipation
SunSDR2 DX 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, 50W 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 like SDC (with its own Skimmer), LogHX, SWISSLOG and RUMlog, more are coming
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)
Minimal delay in CW mode (about 10 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 is not implemented in the ExpertSDR2 software. They will be supported in the future ExpertSDR2 software releases.
ExpertSDR2 Software
The ExpertSDR2software package is used to control the SDR transceiver. In receiving mode the software provides two independent receiving channels with up to 312 kHz bandwidth. Each receiver has its own sub receiver. ExpertSDR2 runs under Windows XP/7/8/10 x32 or x64, Linux Ubuntu x64 and MacOS (MacOS currently beta). Minimum hardware requirement Intel Core i3 1.6GHz or higher, video card supporting OpenGL 1.5 and RAM 256 MB or more.
ExpertSDR2 System Requirements
2 or 4 core CPU Intel Core i3 or Core i5;
8 GB RAM;
40 GB free space on the HDD/SSD for the ExpertSDR2 and accompanied programs;
17′ or bigger monitor;
video card with OpenGL 1.5 or higher;
ExpertSDR2 supports Windows 7-10 32/64 bit, Linux (Ubuntu/Kubuntu 18.04 x64), and macOS 10.14 Mojave and higher.
SunSDR2 DX Specifications
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
ATT/Preamp, dB
-20; -10; 0; +10
VHF LNA, dB
27
Band Pass Filters
9 x HF octave band pass filters:
160M: 0-2.5 MHz (Chebyshev I – 7 Order)
80M: 2.5-4 MHz (Chebyshev I – 3 Order)
60M: 4-6 MHz (Chebyshev I – 3 Order)
40M: 6-7.3 MHz (Chebyshev I – 3 Order)
30M: 7.3-12 MHz (Chebyshev I – 3 Order)
20M: 12-14.5 MHz (Chebyshev I – 3 Order)
17-15M: 14.5-21.5 MHz (Chebyshev I – 3 Order)
12-10M: 21.5-30 MHz (Chebyshev I – 3 Order)
6M: 30-65 MHz (Chebyshev I – 3 Order)
Wide filters for entire Nyquist zones 0-65 MHz and 95-155 MHz
Great value for money radio. Does not look like a normal radio of course, and you have to get used to the “software interface” on a PC.
Fantastic for “remote control”.
Great improvement in RX but also great to have the big termostatical controlled fan on top.
Looking forward to revised software architecture.
Tilman, SM0JZT
Tilman, SM0JZT –
Rated 5 out of 5
Palle –
Just as my SunsdrPRO 2, a GREAT radio, with a lot of possibilities. Looking forward to use it on my remote location, with the AAT-100.
A whole new way of doing Ham Radio.
Love it.
Palle –
Rated 5 out of 5
Erik SM0JCA –
I have tried several radios such as Flexradio 6600, Elekraft K3, SunSDR2 Pro and more. The SunSDR DX has a definite fun factor and the challenge with additional software applications and Software Defined Connectors app with TCI appeals to my aging brain. CW and SSB operation runs stable and with excellent reports. With 100W output this radio is a bit more flexible in operation and the improvements makes it a great radio.
More documentation and Firmware plus Spanish and French manuals in Downloads.
The third batch of pre-orders will be delivered in first week in October (confirmed by Lab599). There are still a few units available in the third batch, we are now accepting normal orders. As long as we show “in stock” delivery is in early October. A new batch is delivered in November.
Controllers, Expert Electronics, Receiver Accessories, Transceiver Accessories
Tilman, SM0JZT –
Great value for money radio. Does not look like a normal radio of course, and you have to get used to the “software interface” on a PC.
Fantastic for “remote control”.
Great improvement in RX but also great to have the big termostatical controlled fan on top.
Looking forward to revised software architecture.
Tilman, SM0JZT
Tilman, SM0JZT –
Palle –
Just as my SunsdrPRO 2, a GREAT radio, with a lot of possibilities. Looking forward to use it on my remote location, with the AAT-100.
A whole new way of doing Ham Radio.
Love it.
Palle –
Erik SM0JCA –
I have tried several radios such as Flexradio 6600, Elekraft K3, SunSDR2 Pro and more. The SunSDR DX has a definite fun factor and the challenge with additional software applications and Software Defined Connectors app with TCI appeals to my aging brain. CW and SSB operation runs stable and with excellent reports. With 100W output this radio is a bit more flexible in operation and the improvements makes it a great radio.
Erik SM0JCA –