
I have several remote controls that require full IRF frequency extension. Unfortunately, this semi-finished design will not work with remotes with signals on the lower end of the 20K to 56K spectrum. Too bad, because I've had my own extender for over two decades, each of which covers the entire range without any problems. There was no description of the limited frequency range of these devices so I included it assuming they cover the basics. It's still half done.

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