MB1 HF 6m and 2m SDR transceiver 100W with ATU


MB1 HF 6m and 2m SDR transceiver 100W with ATU 585
Expert Electronics
Price: 5595 USDIn stock

Ultimate MB1 Prime is available, limited edition:

- CPU - Intel® Core™ i7-6700T instead of i5
- RAM - 16 GB instead of 8 GB
- SSD - 525 GB instead of 120 GB

Additional cost $1,400. Ordering: (206)779-1011, please text your name/callsign.

This MB1 model includes internal ATU. We will have MB1 radios available at Orlando HamCation, February 9-11, 2017. Stop by our booth 308, North Hall!

Very detailed MB1 review by Mark Abraham, NI0Z

MB-1 reviews:

User Manual MB1 SDR transceiver

Your purchase includes 1 (one) hour of U.S.- based installation technical support (telephone/remote access to your PC). Addition time blocks can be purchased. Current rate is $169/hour billed in 15 minutes increments. Hardware warranty is 12 months.

Designed in Russia. Assembled in Taiwan (R.O.C)


Many radio amateurs use PC with the classic analog transceiver. Connection between computer and radio requires USB cable and other interfaces . SDR MB1 transceiver elegantly solves connections problem. No more wires!

The HF 6m and 2m DUC/DDC transceiver MB1 - this is a new generation of amateur radio. Transceiver combines a classic design, accumulated over many decades, with the most advanced DUC/DDC SDR-technologies - direct conversion and synthesis of radio signals, and full-featured modern computer with a Intel Core i5 CPU. Operator receives a fully functional workstation in one box, which is started by pressing just a one button. All the peripherals connections are internal with virtual audio cables and COM ports; Simply connect second monitor, mouse, keyboard and you may control SDR radio with knobs and buttons from the transceiver's front panel.


  • ADC with sample rate 160 MHz and resolution 16 bit
  • Two independent receive channels with bandwidth 312 kHz
  • Recording of live signals of bandwidth up to 312 kHz with later replay and analyses
  • Receive in Nyquist zones up to 800 MHz (necessary to add external filters )
  • Spectrum Scope up to 80 MHz
  • High quality audio DAC with the precision 24 bit to minimize signal delays
  • Qualitative IPS 7" display with the resolution 1280x800 pixels
  • Connector for controlling external devices, 8 programmable transistor switches
  • Interface with PC – LAN 100 Mbps
  • AC voltage 220/110V, current consumption up to 3 Amp
  • Input of the external reference oscillator with the frequency 10 MHz
  • Small dimensions and lightweight
  • Two version of GUI: Desktop View and MB1
  • Compatable with 3rd party logging and digital modes programs

Main features

  • Independent receive path with Digital Direct Conversion(DDC)
  • Separate independent transmit path with Digital Up Conversion(DUC)
  • Full duplex or half duplex mode*
  • Two software independent receiver channels with bandwidth up to 312 kHz and two sub-receivers in each channel.
  • Antenna switch for two HF antennas
  • Connector to control external devices, 7 powerful switches with open collector
  • Automatic Tuner Unit for HF bands: Available as an option
  • ALC input for connecting external power amplifier
  • Four programmable PTT outputs for independent external PA control
  • COM port for connecting external devices (power amplifiers, rotators, external PC etc.)
  • Provision for additional BPF in HF front-end via RX IN and RX OUT connectors
  • Embedded sub-octave band pass filters
  • VHF transverters operation
  • Calibrated receiver
  • Signal generator (output DAC OUT)
  • Frequency synchronization with external 10 MHz reference oscillator
  • Minimal delay in CW mode (about 10 msec)
  • SO2R operation
  • Remote control. PTT foot switch and CW key are connected to E-Coder SDR-control panel. Headset and E-Coder panel are connected to local PC.

* Full duplex mode is supported by the transceiver's hardware, not implemented in the software yet. This mode will be supported in the future releases of the ExpertSDR2 software.

MB1 contains full-scale PCr based on Intel Core i5 processor, with following parameters:

  • Mother board thin Mini-ITX Form Factor
  • CPU Intel Core i5 2.8GHz
  • RAM 8GB
  • SSD disk drive, 120GB
  • 4 USB 3.0 ports (rear panel) and 2 USB 2.0 ports at the front panel of the transceiver
  • HDMI and D-PORT for connecting external monitors
  • LAN port 1Gb

Application areas

  • Full-function amateur radio transceiver
  • Mobile contest-station
  • Remote receiver or transmitter* controlled over internet
  • Spectrum analyzer with the bandwidth up to 80MHz

Block diagram


A version of ExpertSDR2 software with adapted GUI for 7" display was specially developed for the MB1 transceiver. At the present time software works in RX/TX mode and supports two independent receiving channels with the bandwidth up to 312 kHz. A DSP library developed by Expert Electronics allow to improve receiving quality and increase stability of the software. Two OS are supported: Windows 8/10 and Linux Ubuntu.

Transceiver MB1 set

Transceiver can have additional options: Automatic Tuner Unit (ATU) for matching the antennas with 50 Ohm transceivers output path, embedded WLAN unit for connecting the transceiver to LAN via wireless interface WLAN.

Basic complete set:

  • MB1 transceiver

Note: Automatic Tuner Unit is not installed into the transceiver

  • LAN-cable for connection to external LAN
  • Power supply cable for connecting the transceiver to AC
  • Two audio adapters JACK 6.3 mm to JACK 3.5 mm for connecting of headset to the transceiver
  • CD with ExpertSDR2 software. (Software can be also downloaded from our web-site)

Maximum complete set:

  • MB1 transceiver + ATU

Note: internal Automatic Tuner Unit is installed in the transceiver

  • LAN-cable for connection to external LAN
  • Power supply cable for connecting the transceiver to AC network
  • Two audio adapters JACK 6.3 mm to JACK 3.5 mm for connecting the headset to the transceiver
  • Latest version of Software is available at the Expert Electronics website

Recommended accessories:

In addition to main complete set following accessories available:

  • Computer headset EE-PH-01 with electret microphone
  • PTT foot switch EE-CP-02
  • SDR-control panel E-Coder EE-EP-01 or SDR-control panel mini kit EE-EP-02, for comfortable remote work


Receive path's construction principleDirect conversion of radio signals
RF ADC clock frequency, MHz160
RF ADC resolution, bit16
Receiving frequencies bandwidth, MHz0.09 .. 65, 95 ... 148
Maximum displaying spectrum width, MHz80
Amount of independent receive channels2
Blocking Dynamic Range (BDR), dB129
Dynamic Range over IMD3, dB98
MDS level, dBm-128
Image channel rejection, dB> 110
Local oscillator's stability, ppm+/- 0.5
Embedded preamplifier, dB-20, -10, 0, +10
Additional preamplifier VHF, dB+26

Signal generation principleDirect synthesis of radio signal
RF DAC clock frequency, MHz640
RF DAC resolution, bit14
Transmit frequencies bandsAll amateur HF bands, 6m and 2m
Maximum output power, HF under IMD3 = -30 dB, W100
Maximum output power VHF under IMD3 = -30 dB, W50

Other characteristics
Dimensions, mm320x140x250
Weight, kg (lbs)10 (22lbs)
Operating Temperature range, degrees Celsius0...+50
Power voltage range AC, V, Hz~100 ... 240, 50 ...60
Power consumption, W320

Declaration of Conformity


The SunSDR MB1 complies with FCC Part 97 rules for the Amateur Radio Service.


Warranty is 12 months from factory defects and workmanship including accessories for sales after May 28.2017. For 2nd hand devices warranty transfer cost $50 one-time administrative fee.

MB specifications SunSDR MB1Dayton 2016 Interview Vasily Dayton 2016 MB1 transceiver back panel