Some where I have a copy of all the Q codes in a book given to me by uncle from when he worked as a radio operator in air traffic back in 1940
so if you have any more queries I will try and help
Infact I have it now
Taken word by word from 1937 copy of Civil Aeronautical Radio Service
QFF. Question. What is the actual barametric pressure reduced to sea level at
???? airfield.
The book is in almost mint condition and was a price of 1 shilling
Ian