Keeping promises is very important. So let’s check if the suppliers of our newer LoRa boards keep their promises. The first ESP32 boards were disappointing as I showed in video #182.

In today’s contest are:
– TTGO LoRa32 board Version 2.0
– TTGO LoRa32 board Version 2.1
– TTGO LoRa32 T-beam board
– LoRa32u4 II
I will measure the maximal output power and assume, that the receiving channel behaves similarly to the transmitting circuit. Not really true, but good for an approximation.

Links:
TTGO LoRa32 board Version 2.0: http://s.click.aliexpress.com/e/c8dg10MC
TTGO LoRa32 board Version 2.1 http://bit.ly/2OHUwYw or http://s.click.aliexpress.com/e/tXl7qm4
TTGO LoRa32 T-beam board http://bit.ly/2OLaUHR or http://s.click.aliexpress.com/e/c7fq4oAU
LoRa32u4 II: http://bit.ly/2x6HnBI
Test sketches: https://github.com/SensorsIot/LoRa-Board-Test-2

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