The following script works with EyeTV 2.2.1 to speak the signal strength every 5 seconds. I'm posting this because the script I posted a few weeks ago was broken by the new release.
repeat
 tell application "System Events"
  if UI elements enabled then
   tell process "EyeTV"
-- make sure everything between "tell" and ""EyeTV Preferences"" is 
-- on one line when you copy and paste
    tell progress indicator 1 of UI element 1 of group 1 of tab group 1 of UI element 1 of UI element 4 of UI element 6 of window "EyeTV Preferences"
     set mySignal to get value
     set mySignal to mySignal * 100
     set mySignalInt to mySignal as integer
    end tell
   end tell
  else
   display alert "Enable GUI scripting in the AppleScript Utility"
  end if
 end tell
 say mySignalInt
 delay 5
end repeat
 
