Why would altering the doppler.sqf file not work with direct modification via Windows Notepad? The symptom is that the frequency is not recognized, although the line in the doppler.sqf file is apparently correct. Going over to the .tle file to check the spelling, spacing and so forth on the satellite name, the bright idea overcame me to find out what happens when I copy and paste the name (obviously the same to the EYE!!!) from the .tle file to the doppler.sqf file. Low and behold, it worked. Nothing in the rest of the line in the doppler.sqf file was altered. I surmise that even though the displayed characters are the same, somehow they are not. What is the formatting issue that I'm running into? This has happened before AND I have not, until today found out why. How do I fix this? I have spent a fair amount of headbanging here. This is just the latest episode. If I looked at the file in a hex editor, I am sure I would not know what to look for. Probably break more than I fix. Norm n3ykf