Radio Tuning ? Keypad G7424 Series - Gables Engineering - Communication systems and equipment
Communications
Aeronautical HF Radio Map | The SWLing Post
Collins HF-220 high-frequency radio used by Dick Smith, AC, on board his Bell Jetranger III helicopters from 1982 - MAAS Collection
General Aviation HF Radio and Aviation HF Radio | Aviation HF
Radio transceiver - HF-9000 - Collins Aerospace - Rockwell Collins - AM / HF / for aircraft
High Frequency (HF), Very High Frequency (VHF), and Transponder usage in Aircraft
Aeronautical HF | The SWLing Post
News | Collins Aerospace High Frequency radio selected as C-130J Super Hercules standard | Collins Aerospace
Portable HF Radio Systems for Aircraft | Aviation HF
HF Aeronautical Radio
HF-9000D/F Airborne HF Communication System | Collins Aerospace
6119
URC-300 Line of Sight (LOS) Transceiver - General Dynamics Mission Systems
US Air Force Selects L3Harris to Deliver Airborne HF Radio for Aircraft Integration
Portable HF Radio Systems for Aircraft | Aviation HF
Single and Dual Portable HF Radio For Aviation | Aviation HF
Avionics FAQs
HFLINK | Brian Lloyd WB6RQN Round The World Flight Project Amelia Earhart 80th Anniversary
QLF–Amateur Radio in Your Aircraft - KITPLANES
Common Aviation Frequencies: A Pilot's Communication Guide
Diamond Faces: The First to fly across the Pond in a DA50 RG - Diamond Aircraft Industries
How pilots communicate with ATC while 35,000 feet in the air - The Points Guy
Monitoring HF Aviation Voice Communications with your SDR Radio or a WebSDR - YouTube
787 Guide - There are no EICAS messages for a failed HF radio, but you may see these dashed lines. From experience I've also had HF radios fail without any particular indication.