WRTH - The World Radio and TV Handbook
Recreation, Radio, Shortwave and DX Listening, Frequency, Schedule and Programming Guides - WRTH - The World Radio and TV Handbook. An annually published DX/Listener Guide to world radio, TV, and satellite stations.
https://www.wrth.com/
Transmitter Documentation Project Page
Recreation, Radio, Shortwave and DX Listening, Frequency, Schedule and Programming Guides - Transmitter Documentation Project Page. Contains numerous links to shortwave stations, DX program information, transmitter site detail and transmitter histories.
https://www.broadcast.be/
Welcome to ShortWaveListener Now
Recreation, Radio, Shortwave and DX Listening, Frequency, Schedule and Programming Guides - English Language Transmissions. Worldwide English language transmissions, published by the Swedish DX-Federation.
http://www.swl.nu/
AWR: Radio Broadcast Schedule
Recreation, Radio, Shortwave and DX Listening, Frequency, Schedule and Programming Guides - AWR: Radio Broadcast Schedule. Adventist World Radio schedules of broadcasts to all regions.
http://awr.org/