1. 13-Transistor Transceiver for Digital - http://crkits.com/13TR%20Kit%20Assembly%20Manual%20Rev.B.pdf
2. Time Mapper UHD - https://www.mapability.com/ei8ic/index.php
3. 144 MHz EME NewsLetter (July 2023 Issue) - http://www.df2zc.de/newsletter/index.php
** 432 and Above EME Newsletters (June/July 2023 VOL 52 #4) - https://www.nitehawk.com/rasmit/em70cm.html
4. International Lighthouse Lightship Weekend (ILLW – активність з маяків) (00.01UTC 19th August to 24.00UTC 20th August 2023 (48 hours)) - https://illw.net/
5. Трансивер на надмініатюрних лампах - http://www.qrzua.club/viewtopic.php?t=84
** Аудіо кодек в SDR - http://www.qrzua.club/viewtopic.php?t=95
