hsmodem
Differences
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| hsmodem [2023/07/22 15:12] – m0lte | hsmodem [2023/07/22 15:13] – [Usage (image transmission)] m0lte | ||
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| Use the FFT tuning window to align your radio tuning to the transmitting station. The cluster diagram to the left should show e.g. 4 clusters for QPSK when correctly tuned. When you are receiving frames successfully, | Use the FFT tuning window to align your radio tuning to the transmitting station. The cluster diagram to the left should show e.g. 4 clusters for QPSK when correctly tuned. When you are receiving frames successfully, | ||
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| + | The line at 100Hz in the tuning window is a tuning aid. This makes it very easy to find the exact frequency. In the spectrum display there is a red line at 100 Hz. You bring the 100 Hz peak to this line and the modem will synchronize immediately. A drift “after” locking is not a problem, it is not necessary to always follow the line. | ||
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| + | The received, yellow 100 Hz peak should lie reasonably on the red 100 Hz line. | ||
hsmodem.txt · Last modified: 2023/07/22 15:43 by ei5iyb