Hundreds. You see those dishes had a moter and it had to find the satellites in the sky to intercept the tv station signals. We had to punch in cordnance codes for each band of channels. Sometimes I would pick up a band all the way from Japan and watched the Japanese channel. I picked up a few Mexican channels too.
The odd thing was there was a rare planetary alignment that knocked the signals out for a while.
Back in those days everyone in my family had a decent job when the coal mines where open and that dish was about 4,000 US dollars.