Expert Electronics SunSDR2 DX HF/6M/2M SDR Transceiver
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Description
Expert Electronics SunSDR2 DX HF/6M/2M SDR Transceiver
The SunSDR2 DX transceiver is the smallest 100W 160M-6M + 2M HF/VHF SDR transceiver in the world, which makes it 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 of Gen5 (late 2022) in comparison to Gen1 (November 2019):
- Redesigned heatsink, with thinner and more frequent gills for higher effectiveness
- Improved temperature sensor placement for more accurate temperature readings
- Improved TX IMD3 up to ~37 dB across all HF bands, with 100W output power
- 6M output power have been increased up to 80W
- Improved SDR PCB protection from cross-talks. Improved protection for the supply chain
- Added ferrite bead on the flex-cable connecting PA and SDR PCBs, for more stable operation with external ATU
- Added filtering of the headphones' connector
- Slight improvement of the RX path
- Redesigned TX filter of the DAC chip, which provides better linearity of the TX signal
- Redesigned band pass filter on the PA input, which improves linearity of PA operation
- Improved structure of 160, 6M TX filters
- RX/TX switching node on PCB is more resilient now
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 is not implemented in the ExpertSDR2 software.
Purchase your Expert Electronics SunSDR2 DX HF SDR Transceiver from GigaParts today.
Features
- 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)
- Improved supply system, which leads to less heating and less power consumption
- Active cooling
- Antenna switch supports Predistortion without external devices
- Improved topology of SDR PCB
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 |
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.
Includes
- 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.)
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Customer Reviews
The SDR2 DX caught my eye and so I ordered one.
Glad I did.
One click tuning and the ability of the mouse wheel to tune makes me very happy. Receive performance makes me very happy. I am getting excellent audio reports.
There are things you should know before buying one. You need a computer (a good one) in order to use this radio. There are no knobs or dials. You should be able to change settings in your OS to use this radio. You need to have some patience as this radio is a learning experience with a learning curve. It is fun but it is a challenge.
I did not order the cable that is needed to run an external amplifier so don't forget to do that. I did order one and now everything is good.
The radio does not come with a microphone. I had a Heil Pro 7 headset with the Yaesu plug so that worked out well. Note: there is a small amount of latency in SSB and CW. I then set up an XLR mic with a mixer and I pre-monitor my microphone before it goes into the radio so latency becomes not an issue.
Software is pretty simple to use. I am still learning settings but as time goes on, I am sure that I will master this radio.
Read the online instruction book and try everything. You pretty much cannot brick this radio. So far the Expert Electronics SunSDR2 DX is a blast. I've had a lot of radios....and this one pretty much tops them all in my opinion.
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