KD8CEC Amateur Radio

 Release DVPI Version 1.03 There have been some changes to the DMR node recently. This version changes only those related to the recently changed DMR node. If you normally use Version 1.0 or Version 0.95, no upgrade is required. DVPi uses the USRP Client protocol.  When you install and use DVSwitch, you must read and comply with the license that appears. The user is responsible for the license for the use of DVPi.

  Release DVPI Version 1.0 Version 1.0 and Version 0.95 are the same.  If you are using Version 0.95 you do not need to update to Version 1.0.  DVPiManager has some features added.  If you want to use features added in Versio 1.0, you only need to download dvpimanager. DVPi uses the USRP Client protocol.  When you install and use DVSwitch, you must read and comply with the license that appears. The user is responsible for the license for the use of DVPi.

 Release DVPi Version 0.88 - Dual Mode, D-Star, Function Key 2 DVPi uses the USRP Client protocol. When you install and use DVSwitch, you must read and comply with the license that appears. Version 0.88 is a test version. If you want a stable version, please wait for Version 1.0.

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.

Release EU1KY AA Firmware CEC Version 0.53  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 V0.40 has been released, and stabilized version is posted separately. stabilized version :  http://www.hamskey.com/2019/03/eu1ky-antenna-analyzer-cec-stabilized.html

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.

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 HDSDR with HF Transceiver  (Examples of using RTL-SDR in uBITX #2) Modified - Add Videos 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

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).

uBITX Firmware CEC Version v1.06 (changed v1.061) I deployed 1.06 and received feedback from WSPR's beta tester, Philip (G7JUR). It was a problem that the LPF was not automatically selected according to band selection during WSPR transmission.

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.

How to use Si5351 #1 - Source Analysis Learn how to use the Si5351 for use with QRP radios include uBITX ,WSPR Beacone, Anatenna Anaylyser and many rf tools As I am familiar with the AD9850, I first tried the Si5351 in uBITX. feel that using the Si5351 is suitable for QRP radios.

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.