I am quite curious about the etymology behind the name ‘Panjandrum’, It is not explained in the article IIRC. Furthermore, the article writes about the improbability of homing/self-stearing devices, again IIRC flight navigation around this time already made use of known radio broadcasts for direction finding before the war (Amelia Earhart), did they research this or was it to unreliable.. because said war (jamming etc)?