I have a lo band vhf station on channel 6 near me. I use an outside antenna. I understand the uhf channels above 70 have been sold off tophone companies. Since this has nothing to do with lo band vhf, what happens on Feb 17? Transmitter shuts off, or they start broadcasting a different waveform on the same frequency? In the latter case, the existing vhf antenna can be used. I understand the local vhf channels have digital uhf channels also that are read by the converter box, so a directional uhf antenna might pull these in, but do I need to rent a spectrum analyzer to see whats on loband vhf on Feb 17?