1. The ‘Hilltopper Compact 20M or 40M CW transceiver - http://4sqrp.com/kits/Hilltopper20/Hilltopper_combo_manual_V6.pdf

2. Morse Contest Trainer Version 3 - https://www.g4fon.net/

3. Self-contained Antenna Tracker - http://www.csntechnologies.net/sat

4. GMA Map - https://www.cqgma.org/mvs/

5. Xiegu VG4 antenna - https://radioddity.s3.amazonaws.com/Xiegu_VG4_Manual_EN_20220111.pdf