Description

The SunSDR2 DX transceiver is based on the well-known SunSDR2 PRO transceiver with several hardware improvements. It is very compact for a 100W format, has active cooling, and an improved supply system, meaning it’s perfectly suited for DXpeditions. Also, it has 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 ExpertSDR2/3 software makes this high-performance SDR transceiver the perfect base station. The evident choice for a true contester!

Hardware improvements in comparison to SunSDR2 PRO:

• Improved supply system, which leads to less heating and less power consumption
• Active cooling and improved design of the heatsink
• Improved TX IMD3 ~37 dB across all HF bands, with 100W output power
• Antenna switch supports Predistortion without external devices
• 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)
• Firmware based protection algorithms in the PA board
• Sturdy DIP-type ExtCtrl connector
• New connectors: external tuner control, GND
  
• Improved PCB topology

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 5-6 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.

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