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MythTV is not a device. MythTV is not an Operating System. MythTV is software that runs under Linux or Macintosh. MythTV is not a device. MythTV is not an Operating System. MythTV is software that runs under Linux or Macintosh. Create a home theater PC ([[HTPC]]) or media center computer using the MythTV software. Related Resources:* [[MythTV Setup Series]] - specific aspects of MythTV configuration* [[Mythbuntu]] - a Ubuntu derivative focused upon MythTV (''mythbuntu has been retired'')note: ''mythtv runs as root database, to open execute "sudo mysql -p" and enter the sql server password.'' mysql> runcate table program; mysql> truncate table program; === signal and reception ===Before tweaking you need some baseline readings. Without these you won't know if the changes you're making are for the better or worse. Start with a channel scan to identify the frequency for each station you care about.If trying to adjust antenna it may be necessary to keep a signal strength indicator visible for the desired channel frequency. When changing channels the signal strength is sometimes but not consistently and briefly displayed. To keep a signal strength indicator visible on the screen for the current channel you will activate SIGNALMON function.The SIGNALMON function is activated by default via the key combination of* F7 on very old versions* Alt-F7 is the default for versions 0.21 and beyond* Alt-S* Ctrl-ATo configure the key combination for SIGNALMON goto Frontend SETUP -> EDIT KEYS -> TV Playback -> SIGNALMONYour key binding for SIGNALMON may be different. You can set your own key binding of preference.[[Category:SQL]]