1. Software Defined Radio Transceiver - https://makezine.com/projects/software-defined-radio-transceiver/
2. QuirkyQRPHamRadios - https://www.etsy.com/uk/shop/QuirkyQRPHamRadios
3. 30m CW activity group - http://30cw.net/
4. Feeder through wall (перехід до антени через стіну) - https://pa0fri.home.xs4all.nl/Ant/Doorvoer/feed-through%20wall.htm
5. End of the Year HAM RADIO Sales and Coupons! - https://www.youtube.com/watch?v=JgWJOBh_I1M
