On July 27 and 28, 2020, I visited New Peterhof with my family. Since I haven’t been to Petrodvorets for a long time, and summer is in full swing.

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To search for rare countries or simply monitor activity on bands, DX clusters operating via the Telnet protocol are traditionally used. The advantage is low traffic consumption and low system requirements. The disadvantage is control using console commands and the lack of a graphical user interface. I found a successful solution that combines the advantages of a Telnet cluster and a graphical shell - a program from VE7CC.

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APRS over TCP-IP (over the Internet) is very easy to set up.

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The system time zone is selected when installing the distribution. In the future, you can configure time synchronization (NTP protocol) for more accurate time and organize the display of information about other time zones. For example, when it is morning in Moscow, it is deep night in the central part of the United States. This article is about how to improve time synchronization, set the time zone and display the time of other time zones on the screen.

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It is impossible to cover an entire area of the amateur radio hobby in one article - working via satellites. I will dwell only on the most difficult moments - various methods of working via FM and SSB satellites and correction of the Doppler effect.

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Frequency of spacecraft of radio amateur satellite service.

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A few years ago I learned CW (Morse code). Now I want to increase the speed after a long break, because soon there will be competitions on ultra-short waves. I am publishing a script that I developed for training telegraph reception by ear. The script plays random text through the computer speaker at a specified speed.

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The Web utility PHPMYADMIN is used by the software developers to create and modify MySQL databases. After a few years of using this program, in connection with the transition to the newer MySQL 5.7.30 and PHP 7.2, it was necessary to update the phpmyadmin until the latest version ...

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