On Wednesday, December 14, 2016 at 12:42:38 PM UTC-5, John Carlyle wrote:
I did an experiment today. A bicycle with a strobe headlight was approaching me. After I went by him, I turned around so as to retrace my path, and I intently watched him approach me again.

At a range of 3/4 mile I could see the bike and rider clearly, but not the strobe. The strobe only became visible around 1/3 of a mile. Conditions were clear, under full sun - exactly the kind of day you'd probably be soaring.

This result duplicates my experiences with in air sightings of an ASG-29 with a purpose designed fin strobe, where I could see the glider well before I could see the strobe.

I don't understand what value there might be in mounting a bike strobe on a glider...

-John, Q3

On a number of occasions the strobe on QV's '29 caught my eye before the glider.
This was always on somewhat poor visibility days as one would expect.
UH