Digital TV Transition

On 10 June my TV claimed I could receive 19 over the air analog channels, and 20 over the air digital channels.
At around 9.00 PM on 12 June, my TV claimed I could receive 8 over the air analog channels, and 9 over the air digital channels.

Of the analog channels, one was a notice from dish network advising me to get a new smartt card to continue watching the channel. A second analog channel was one explaining how to isntall, and configure convertor boxes, digital TV, and your VCR and analog TV to the convertor box. Angel Network, Univision, and the like comprised the rest of the analog channels. (All of them are either low power, or repeater stations.)

So what happened to the other eleven digital stations? What happened to the analog stations that were not digital on the tenth, and are neither low power, nor repeaters stations.

Turns out that with digital broadcasting, the transmitters are also broadcasting at a lower power. Furthermore, once propagation effects kick in, coverage is much smaller than with analog transmission.

I got rid of cable a couple of months ago. (More precisely, I requested cable TV service to be terminated. The cable company claims that they did so. My bill from them --- which is for Internet service --- appears to confirm that position. However, I can still pick up roughly 70 cable channels, if I connect the TV to the wall outlet. I discovered this trying to figure out why my talking VCR wasn't working properly. It was still connected to the cable wall outlet. I had never connected it to a cable box.)