The fiber we use at our datacenter is quite flexible but still gets damaged if you bend it too far. To roll it like they describe you would still want to have a fairly large drum (probably like 3-4 inches in diameter) which would make it pretty bulky for a small drone.

1000 mbps is the theoretical limit of the line. You will typically lose a little bit for things like TCP overhead.

Link bandwidth (Mbit/s): 1000
Max achievable TCP throughput limited by TCP overhead (Mbit/s): 949.2848

Found some documentation listing the two middle switches as the rounding switch (up fraction down) and the decimal switch (auto? 0 to 6 then hex?). No idea on the other two.

http://www.calcuseum.com/SCRAPBOOK/BONUS/32853/1.htm

Decimal switch: [A-0-2-3-4-6-F], Round switch: [(ArrowUp)-5/4-(ArrowDown)], Miscellaneous switch: [(Blank)-K .-(Sigma)],