ExpressLRS / ExpressLRS-Hardware

STM32/ESP32/ESP8285-based High-Performance Radio Link for RC applications
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DIY tx modules tx power factor 100x too low #39

Open dgrat opened 2 years ago

dgrat commented 2 years ago

I build a DIY slim and a super slim. The tx power on both modules is 77uW if 10mW is set. There is an increase in tx power if changing it in the firmware to a higher value (but also factor 100 too low). I checked for an issue in the ufl connector by checking with and without antenna cable connected. There seems no issue with the tx output because the measured tx power is close to zero if the cable is detached.

The radios bind and link quality seems not too bad (like in JB's yt vids (-40-60 dbm) 1m away @ "10mW"). On the other hand the tx power is clearly less and the modules become relatively warm.

Build build 10mW 10mW Unplugged Cable cable_unplugged