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For three years I have been using an  HP 8300 SFF  in the lab to play with BBRF013, RX888 etc. I have made many modifications to the PC. I added a second USB3.0 controller and about two weeks ago I replaced the system disk with an NVME disk. Almost every day I use BBRF103 or RX888. Suddenly yesterday I cannot connect BBRF103 to the original USB3.0 ports on the back of the PC. When I launch the application the message appears : Fortunately, I have two USB3.0 controllers installed . After trying to change cables and BBRF103 I noticed that everything worked consistently if I connected to the ports of the second USB3.0 controller. I tried resetting and switching off/on the PC several times without any success. The solution was:  - backup and make a restore point - in device management disable and uninstall the affected USB controller - shut down the PC - upon restarting the controller was detected and the driver reinstalled automatically and voila now it works again. Th...

It is a tentative version of ExtIO_sddc.dll  that can operate with BBRF103,  HF103, RX888 as the FX3 Arm code detects the hardware type used. The sources are at  https://github.com/ik1xpv/ExtIO_sddc/releases   a compiled dll is at  https://drive.google.com... MD5 ef1579eeb47ee1fc4f3c8ec45520d81c extio_sddc_v1.01.dll Copy the dll in a directory with HDSDR.exe and libfftw3f-3.dll. Here a summary of changes. - First, there are a lot of new bugs... I'm sure :-) - The SDDC_FX3.img arm program detects the radio hardware.      If there is not a programmable Si5351a  the radio is a HF103 and operates only in HF      else      if there is a pull up (led blue) on GPIO54 of FX3 the radio is a BBRF103      else      it is a RX888. -The control protocol in between FX3 and ExtIO_sddc.dll is redesigned and the programming of Si5351a and R820T2 is now made by the SDDC_FX3.img code. It obta...

HF103 is a HF only prototype of BBRF103  that started at the end of 2019. Thanks to Andrew G4XZL for ideas, test reports and advice.  Here after the modifications. Hardware: - It is designed for LW-MW-HF band only: 0-30MHz. - A Low Noise Amplifies has been added to improve NF of receiver. - The Clock reference used is a low noise xtal oscillator with lower phase noise and spurs than Si5351a.     - The RF attenuator of HF103 uses  DAT-31-SP+   - The PCB has been made larger 100x100 mm to increase spatial separation between components' groups (COVID style)  Here the  scheme and PCB layout . Some pictures of hardware Case  ADC and RF layout                                                                       LNA, filter, attenuator ...