Nan gear was infra-red, not red. The purpose was to be non detectable
without special equipment.

"Richard Harrison" wrote in message
...
Richard Clark wrote:

I wasn`t a signalman but I noticed our signaling light was fitted at
night with a red filter called the "Nan-gear". Our phonetic alphabet in
those days went: able, baker, charlie, dog---nancy. I suppose Nan was
short for nighttime gear. I speculate it was hoped that the enemy would