Expert Electronics SunSDR2-DX - HF/6M/VHF Transceiver

The SunSDR2 DX transceiver based on the well-known SunSDR2 PRO transceiver with several hardware improvements. It is a 100W-HF; 50W-6M; 8W-2M transceiver, very compact, has a separate connector for active cooling and improved supply system, meaning it’s perfectly suited for DXpeditions. 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!

Hardware improvements in comparison to SunSDR2 PRO:

• Improved supply system, which leads to less heating and less power consumption
• 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
• Sturdy DIP-type ExtCtrl connector
• New connectors: external tuner control, external fan 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, 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, 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)
• A small 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.

The ExpertSDR2 minimal 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;

The ExpertSDR2 software supports Windows 7-10 32/64 bit, Linux (Ubuntu/Kubuntu 18.04 x64), and macOS 10.14 Mojave and higher.

Architecture description

Will be available later

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.)

Warning! Software for each device is different! Double-check your device before downloading!

 Terms of the product's warranty

 SunSDR2 PRO Getting Started
This document describes the first steps with the SunSDR2 PRO/DX transceiver

 "Setting up SunSDR2 PRO for DUMMIES" by Pete Parisetti, MM0TWX

This document can be used with the SunSDR2 DX

User Manual Addendum version 5.3, by Erik EI4KF

January 2019

Setup instructions for WSJT-X, ExpertSDR2, and MacLoggerDX

 ExpertSDR2 and CW Skimmer

This guide describes how to setup ExpertSDR2 for use with one or two CW Skimmers.

Useful diagrams

 Using the transceiver for SO2V operation

 Using the transceiver for SO2V operation with SDC
Both diagrams can be used for creating two working places with a single SunSDR2 PRO/DX transceiver.

 Connecting an external PA, fan, relay, etc. to the SunSD2 PRO/DX
In this document, you can find information about how to connect the SunSDR2 PRO/DX to an external PA, fan, or relay to control the external BPF, antenna switch, etc.

 Control cable schematic for external PA VL-1000 (Yaesu)
This schematic allows you to assemble your own control cable for PA VL-1000 by Yaesu. With this cable, you control PA's bands and RX/TX mode. This cable might be used for control of other devices, which works with 4-contact control protocol by Yaesu, e.g. PAs, antenna switches, etc.

 ExtCtrl to EB300 connection diagram