Used bird is mini Crosswind, OHD setup with Asus ac-56, raspberry pi 3b+, Maple leaf air, Maple 17db patch on tracker and Interline 23db on tripod at receiving side.
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Hello, an incredible record, congratulations.
Is the tracker powered by OHD or Crossfire telemetry?
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Telemetry from OHD ground pi to tracker.
My rc is Frsky R9 @868mhz, not CRF.
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Nice Job! Any plans to go farther?
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With this battery and rc (about rc I’m not sure, where is it’s limit) , an 50k max to be on the save side could be possible.
For 60k, I will need one more 6s1p in parallel with existing 6s3p to have a total of 20Ah available. Average consumption is ~ 113mah/km, do the math… 
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Hi, What BEC do you use?
From Pololu, 5a dc-dc converter