I was pointed to this video on the HFDL list a few months back, but it hasn't been mentioned here. This is well worth sitting through if you listen to HF aero all the time.
Trackwise - Targeting Risk Within The Shanwick OCA - Complete Video - YouTube
There are several nice, but brief, shots of the HF antenna farm at Balligireen from which Shanwick is heard.
Trackwise - Targeting Risk Within The Shanwick OCA - Complete Video - YouTube
There are several nice, but brief, shots of the HF antenna farm at Balligireen from which Shanwick is heard.