KD8CEC Amateur Radio

Improvements to use the FT8 protocol on the Cortex-M base Several experiments are underway to use FT8 on the Cortex-M base. The previous experiment can be seen in the link below. http://www.hamskey.com/2019/05/ft8-wsjt-x-20-protocol-decoding-in.html

FT8 (Wsjt-x 2.0) protocol decoding in Cortex-M for experiment I implemented FT8 signal decoding on the STM32F746G-Disc board for Expermental. I want to test whether Cortex-M based FT8 communication is possible. I used Wsjt-x 2.0 and some source code to enable FT8 decoding on the Cortex-M7 base.

EU1KY AA Firmware stabilization version update (V0.53) and Test about Extended WSPR Band (4m, 2m, 630m, 2390m) Since Version 0.53 did not cause major problems, I moved 0.53 to the stable version. My next task is to free memory to add other features. Maybe it will be version 0.6 and it will not be released. I will release the source to github after a few days of preparation after Version 0.7 is released.

Release EU1KY AA Firmware CEC Version 0.40 ( How to using WSPR, FT8, JT65 TX Mode) This version is a development version and may be unstable, and some of the features included in this version may be removed from V1.0, Stabilized version V0.35 has been released, and stabilized version is posted separately. stabilized version :  http://www.hamskey.com/2019/03/eu1ky-antenna-analyzer-cec-stabilized.html

How to Frequency Calibration on EU1KY Antenna Analyzer I will calibrate the frequency of AA in two ways. One is using the instrument and the other is using the SSB radio without the instrument. To use an AA as a generator to test a radio, you must have a calibration procedure.  Also To use the WSPR, FT8 generator included in Version 0.40, the frequency should not be too different.

EU1KY Antenna Analyzer CEC stabilized version First of all, Thank you for using the AA CEC Version firmware. I was going to develop it at a little bit faster until it was Version 1.0. But there were quite a few users out there. Thank you so much. In addition, several excellent testers have done various tests to help stabilize the firmware. So I decided to divide the version into two. It is a stabilized version and a tester version. 1.About the stabilized version The stabilization version will be upgraded if the safety is verified by testers. Therefore, the improvement of the function will be a little late. The tester version will add new features and various tests will be done by great beta testers. Again, thank you for doing various tests. The stabilized version aims to use stable firmware rather than adding features. This page will continue to update the release information of the stabilized version. 2.Download the latest stabilization version Version 0....

Release Firmware CEC Version 0.33 (Issue found and fixed) for Antenna Analyzer(EU1KY) Stabilized version V0.35 has been released, and stabilized version is posted separately. Please download the latest stable version from the link below. http://www.hamskey.com/2019/03/eu1ky-antenna-analyzer-cec-stabilized.html The stable version will continue to be updated on the Link above. ---------------------- Version 03 has been added with some improvements and some simple features. A brief introduction is given below. Beginning with version 3, data conversion utilities are provided for antenna simulation or Matlab use. - Reasons for changing from Version 0.30 to Version 0.33 -> Version 0.34 (Stabilized version) As the memory usage increases, it seems that interference occurs in the communication with sd-ram. I've used as much memory as possible to reduce interference. I have made some modifications to avoid memory interference and it seems to be working normall...

Using SDR-Radio (SDR Console) and Wsjt-X  (Examples of using RTL-SDR in uBITX #1) CAT Support uBITX Firmware CEC Version supports SDR connections from Version 1.07. http://www.hamskey.com/2018/04/how-to-connect-sdr-rtl-sdr-to-ubitx-and.html

How to connect SDR (RTL-SDR) to uBITX (uBITX Firmware CEC Version V1.071 Beta Release, At the end of the beta test, we will release to 1.08.) uBITX and SDR usage will be divided into several and will be posted. Some users have attempted to connect SDR to uBITX. I also supported SDR connections from uBITX since CEC Firmware 1.070 (Beta).

WSPR function test in 6M, 2M band built in uBITX The picture below is example for the results of transmitting WSPR by uBITX stand alone. Thanks beta testers.

Beta testing of the stand-alone WSPR feature built into uBITX -> Beta2 Changed to the second Beta version. Version Name : V1.051W Version 1.06 will be released soon. Version 1.05xx should not be used anymore. Just a moment. uBITX Firmware CEC Version 1.06 has been released. Please click the link below. http://www.hamskey.com/2018/03/cat-support-ubitx-firmware-cec-version_24.html

How to use Si5351 #2 - Si5351 Library for WSPR on QRP Transceiver I introduced two ways to use the Si5351 in the previous post.  and  experimented with two different methods of generating clocks on the Si5351. I want to use both methods together.

RPI Modification for Wsjtx-Portable -Built-in sound card (usb type) -Built-in GPS (usb type) -Added power connector on the side

How to use Wsjtx-Portable (Wsjtx 1.8.1 based Small LCD version) This article is based on Wsjtx-Portable Version 0.5. The video you shot while creating this document are at the bottom of this document.

The portable wsjt-x device in pocket is now named. As the title says, it's simply called Wsjtx-Portable . Wsjtx-Portable is a Wsjt-X program-only device in pocket. I wanted to make it available for use in SOTA, qrp, automobiles and outdoor.

The following link explains why created WSJTX-Portable. http://www.hamskey.com/2018/01/find-and-fix-bugs-in-non-debug.html

I'm posting this experience to help new programmers. This article shows how to solve problems for new programmers. I do not think my method is the best. I think that it is one of various ways to solve an issue. A program called WSJ-X started to become popular. It was a great program. even the program is open source based.

Use CEC version firmware 0.25 or later of uBITX. The following examples are based on version 0.27. All of the examples below only describe connections to uBITX. Please refer to the manual or other documents for how to use the program. uBITX Firmware 0.27 :  http://www.hamskey.com/2018/01/release-version-027-of-cat-support.html

Use CEC version firmware 2.5 or later of uBITX. The following examples are based on version 0.27. We will post the 0.27 version as the test ends. All of the examples below only describe connections to uBITX. Please refer to the manual or other documents for how to use the program.

Use CEC version firmware 2.5 or later of uBITX. The following examples are based on version 0.27. We will post the 0.27 version as the test ends. All of the examples below only describe connections to uBITX. Please refer to the manual or other documents for how to use the program.