On 21 Dec, 09:58, J a c k wrote:
Ian wrote:

Seeing other aircraft is often aided by hearing radio transmissions.
Have you literally heard an aircraft you didn't first see?

Are you remembering that in the UK we have a very limited range of
frequencies, and that it is quite possible to be able to hear calls
from gliders at several different airfields at once? I have on
occasion wasted time trying to see the glider which has just called
downwind at an airfield ten miles from the one I am about to land at.

Ian