Custom firmware for Vaisala RS41 and Graw DFM-17 radiosondes with support for amateur radio use. Ideal for tracking high-altitude balloons. Supported modes include APRS, Horus 4FSK mode, CATS, morse code (CW) and additional digital modes like WSPR and FT8 via Si5351.
GNU General Public License v2.0
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Change default transmit power and add comments #44
Might be worth changing the default SI4032 transmit power in the RS41ng config...
The default of 7 (20 dBm) results in considerably reduced battery life (~12 hours)
25mW is more than enough
Maybe add in a comment that if being used purely for APRS to increase the power, but for horus binary 25mW is more than enough.
From VK5QI: