From ce1a2c52074831161fc22dce21cb0970e4885f57 Mon Sep 17 00:00:00 2001 From: Brumi-2021 <86470699+Brumi-2021@users.noreply.github.com> Date: Fri, 7 Mar 2025 23:40:15 +0100 Subject: [PATCH] Updated Audio Receivers (markdown) --- Audio-Receivers.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Audio-Receivers.md b/Audio-Receivers.md index 36a95bd..d869347 100644 --- a/Audio-Receivers.md +++ b/Audio-Receivers.md @@ -47,7 +47,7 @@ The Key Items on the App that can be seen or selected with the cursor and change * **Gain:** The RF Amp settings. The Spectrum view is +/-20k. * **USB+FM:** It is used to demodulate Wefax (HF Weather fax transmissions) , demodulating the signal in two steps, first demodulating the tuned RF signal in USB , extracting audio tones. And then demodulating again those FM modulated subcarrier audio tones, to extract APT low scan weather fax map signal. (that signal can be recorded into audio.wav file . For a correct demodulation , we need to tune that published frequency applying negative offset (- 1.900Khz) , tuning and aligning the top max freq. "white" carrier (published) with top part aligned with top "yellow" mark, , as the following drawing, -Still current mayhem fw can not decoded the picture -we need external programs, but coming soon, please wait ...) +Still current mayhem firmware can not decode the map-picture , we need external tools... But coming soon, please wait ...) ![image](https://github.com/user-attachments/assets/3b76e009-d64f-495f-8976-1858502248ec) ![image](https://github.com/user-attachments/assets/58acad5c-5abe-4b2b-858f-eb8aed06a228)