I used to use G9BQV - if I remember correctly - many years ago (1980 -ish) when I worked for Marconi (when It was a real engineering company....). Used it for hf test transmissions for the AEW Nimrod
You've [almost] got it John. Instead of 'birds of...a ' think "Boring Old F..." I well remember a spoof 80m QSO many years ago when someone pirating the call G2BOF deliberatly droned on for hou
Some G7 and G9 calls were issued for a variety of purposes in the 1950s and later: G7xx (two letter suffix only) used by marine radio colleges and also for some high Arctic expeditions (G7AA and G7AB