Differences

This shows you the differences between two versions of the page.

--- hsmodem [2023/07/22 15:12] – m0lte
+++ hsmodem [2023/07/22 15:43] (current) – [Prerequisite] ei5iyb
@@ Line 3: / Line 3: @@
 Official wiki: https://wiki.amsat-dl.org/doku.php?id=en:hsmodem:start
-Official download: https://dj0abr.de/german/technik/sat/modem/images.htm
+Official Windows setup instructions: https://wiki.amsat-dl.org/doku.php?id=en:hsmodem:installwin
-M0LTE's fork with PTT support: https://github.com/M0LTE/AMSAT-DL-QO-100-Modem/releases
+The official download has no PTT support, use M0LTE's fork with PTT support: https://github.com/M0LTE/AMSAT-DL-QO-100-Modem/releases
 ===== Prerequisite =====
@@ Line 12: / Line 12: @@
 https://support.microsoft.com/de-de/help/2977003/the-latest-supported-visual-c-downloads
-ATTENTION: ALWAYS select the x86 version (vc_redist.x86.exe) even if you have a 64bit PC!
+<color #ed1c24>**ATTENTION:**</color> ALWAYS select the <color #ed1c24>x86</color> version (vc_redist.x86.exe) even if you have a 64bit PC!
 ===== Setup =====
@@ Line 59: / Line 59: @@
 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, RX Sync and RX Signal will be green.
+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.
+The received, yellow 100 Hz peak should lie reasonably on the red 100 Hz line.