I set my O2 to ground level yesterday and the density altitude was above
9,000' when I took off.Â* Still had a ho-hum flight.Â* At least it was
cool at 16,000' MSL.

On 7/29/2019 10:11 PM, Charlie Quebec wrote:
I have a very large oxy bottle and always start oxygen at ground level. Ive noticed a reduction in fatigue and improved concentration.
5000ft might be OK, but I would rather spend a few bucks on oxy and be right at the top of my game all the time.

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Dan, 5J