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Description

The MB1 transceiver is a game-changer, it's a transceiver and a PC in a single package. It has a classic design, developed over several decades, with the most advanced DUC/DDC SDR technologies - Direct Down Conversion (DDC) and Direct Up Conversion (DUC) and a fully-featured high-end personal computer with an Intel Core i7 processor onboard.

MB1 Prime 2021, its main advantages in comparison to the previous MB1 Prime model:
1. New PC hardware:

Motherboard - GA-IMB370TN instead of MDH11HI
CPU - Intel® Core™ i7-9700 instead of Intel® Core™ i7-7700T
RAM - 16 GB DDR4 instead of 16 GB DDR3
SSD - Samsung 970 EVO 500 GB instead of generic SSD

2. Improved TX IMD3 ~37 dB across all HF bands, with 100W output power

Features of the transceiver

  • Independent RX path based on DDC (Direct Down-Conversion) architecture
  • Independent TX path based on DUC (Direct Up-Conversion) architecture
  • 2 software RXs + SubRX for each of them (4 slices total) + independent wideband Bandscope up to 80 MHz
  • ExpertSDR2 software in two styles: Desktop style and MB1 display (for integrated GUI)
  • 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
  • High-quality IPS 7" touchscreen display with a 1280x800 resolution
  • Supports any software applicable for Windows 10 OS
  • ExtCtrl connector to control external devices with 8 powerful keys with open collector
  • COM-port for connection of external devices, like PA, antenna switches etc.
  • ALC connector for external power amplifiers*
  • Has a special XVTR connector for VHF transverters** (SMA connector)
  • 4 separate programmable PTT outputs for external power amplifiers
  • 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 RX 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***
  • 4 HF (UHF (SO-239) connector) and 2 VHF (N-type connector) antenna connectors
  • Internal power-meter for HF and VHF bands and SWR-meter for HF band
  • Record and play on air fragments (IQ files) with a bandwidth of up to 312 kHz
  • Internal ATU (Automatic Tuner Unit)
  • The embedded power supply unit

* ** *** 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.

 

PC capabilities of the transceiver

  • Installation of digital modes software

  • Installation of HAM and Contest logs

  • Two CW Skimmers may be used on different bands

  • The transceiver can connect to the LAN and the Internet

  • Use of Internet applications (e.g. e-mail, Skype, ICQ, TV, etc.)

  • Play video and audio files

  • Watch TV via USB-receivers

  • An opportunity to connect two external displays, keyboard, mouse

  • An opportunity to connect external speakers to the PHONES jack on the front panel

 

Application area 

  • Full-function radio amateur transceiver
  • Mobile contest-station
  • Remote receipt point for the contests and other applications
  • Spectrum analyzer with the bandwidth up to 80MHz
  • Work with the external programs of digital connection types, CW Skimmer, etc.


Block scheme

MB1 2

MB1+ATU supplied accessories

  • PTT-microphone MD15
  • Power Supply Cable to connect the transceiver to an AC mains network
  • Backup fuse 5A

Additional accessories:

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
RX VHF filters, MHz WideRX: 95-155 or SAW filter for 2M: 144-148
BDR on HF, dB 130
BDR on VHF, dB 114*
Sensitivity, uV 0.2
DR IMD3, not less dB 98
RMDR, dB 110
ATT/Preamp, dB -20; -10; 0; +10
VHF LNA, dB +22
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 50 (up to 60)
Output power on VHF, W 50
TX IMD3, dB 25-30 on HF/VHF
Local oscillator TCXO, MHz +/- ppm 20 +/- 0.5
External 10 MHz oscillator input +
Built-in audio codec, bit 24
RF input/output 4HF (SO 239)
2VHF (N-type)
1XVTR, ADC IN, DAC OUT (SMA)
Built-in PC

Windows 10 OS
CPU: i5-6400T, (Prime: i7-6700T);

RAM: 8 GB, (Prime: 16 GB);
SSD: 120 GB, (Prime: 500 GB);
IPS 7" 1280x800 touchscreen display

AC voltage range, V, Hz ~100...240; 50...60
Power consumption RX/TX, W 320
Operating temperature, °C/°F 0...+50/ +32...+122
Dimensions L x W x H, cm/inches 32.5 x 28.5 x 15.0/ 12.6 x 9.84 x 5.51
Weight, kg/lbs 9.3/ 22

 Specifications are subject to change without notice or obligation and specifications are only guaranteed within the amateur radio bands.

HPF for VHF

HPF

Additional High Pass Filter (HPF) for VHF with pass frequency 100 MHz.

HPF 100 MHz AFC

 

HPF can be easily installed inside the transceiver.

 

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Software

Warning! Software is device-specific! Don't mix software with unsuitable hardware, it may lead to issues that are not covered by warranty!

 Windows


installer ExpertSDR2 x64 v.1.3.1 Update 9 MB1
Firmware v. 66 dd: Summer 2021
Published on 06-07-2021
pdf ExpertSDR2 1.3.1_Release_Notes
ExpertSDR2 1.3.1_Update 9_Release_Notes

 

installer ExpertSDR2 x64 v.1.2.0 MB1
Firmware v. 43 dd: February 2019
Published on 15-02-2019
pdf ExpertSDR2 1.2.0_Release_Notes

 

installer MB1 Utility 1.1.3
Before the installation of the 1.1.3 version, you should manually delete the 1.1.2 version.

 

Warning!
To use the ExpertSDR2 software, please install the Visual Studio Redistributable 2017 either from the ExpertSDR2 installer or from the official Microsoft website:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

 

 


Software and Firmware update video instruction

Articles and Reviews


Review in Practical Wireless, by Don Field, G3XTT (July 2016)
Link to the website - http://www.pwpublishing.ltd.uk


Review in Funkamateur, by Willi Passmann, DJ6JZ (October/November 2016)
Link to the website - http://www.funkamateur.de/


Review on SDRZone website, by Mark Abraham, NI0Z (June 2017)
Link to the home page - https://sdrzone.com/index.php


Video review by Pascal Villeneuve, VA2PV (May 2018)
English version / French version


Review in NCJ (National Contest Journal) by Pascal Villeneuve, VA2PV (March / April 2019)
English version / French version


ExpertRemote system reviewed by Werner Schnorrenberg (DC4KU) (November 2019)
Published in Funkamateur 3-2020


Review by Tom McQuiggan (M7MCQ) (July 2021)