I have a Samsung Plasma but I am also searching for the code for antenna and have not found it. I think I get what you’re doing is a macro for the source by going to a certain source and then utilizing the source button to bring you to the antenna source. The only problem I can see is that on mine the HDMI is just before the antenna source and it flips past HDMI if there is no signal.

I really can’t believe Samsung did this because I hate the source button and the only code missing on my TV is the antenna source code, go figure.

TV is a fpt5884.

Remote is a URC MX-700 sold by B&K.

John