effective signaling range

Z

z_hawaii five o

Guest
some led flashlights have signaling modes.

what would be the effective signaling range of these.

i would be interested in the smaller lights (1 x aaa and 2 x aa) but there are larger lights.

for simplicity can we assume a 'normal throwy' reflector?



i know my rebel80 fenix 2aa is clearly visible at about 1 km.







thx
 
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