This was posted in one of the other firmwares discord so I cant take credit for it but its informational and suggest if u want u subghz to go out go external

article someone on one of the discords I found super helpful

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When you use a single antenna for a wide radio spectrum a perfect antenna match isn’t possible. It is interesting to see actual test results though.

IIUC, the main problem they identified is that efficiency was sacrificed for portability and antenna is way too small for any of Flipper’s frequencies.

Antennas are almost always a compromise. The lower the the frequency the bigger the antenna should be. If we look at the highest range the Flippers CC1101 can do an ideal antenna should be around 16 centimeters. For the lowest frequency the Flippers CC1101 can do an ideal antenna would be around 24cm.

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