This issue still exists. To avoid complications do not change the Raspberry PI Configuration (Localisation) from US to your Country. You will end up without power output in any mode. I had this issue last night. I dit initially my setup to DE German and had no TX output. After I saw Lorenzo's helpful post, i switched the settings back to US English and there it was all fine. Output is correct.
Many Thanks to Lorenzo.
@ HF- Signals, maybe before this issue is solved, give to all new buyers a small note in there delivery.
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vy73
(DO1LU)
Bernd
