Re: Could CBS 2 ever move to UHF
Posted by PhilJSmith on July 16, 2021, 3:44 pm, in reply to "Could CBS 2 ever move to UHF"
I saw a post on another forum that made sense -- perhaps the FCC should rethink this stance on lower-power for VHF-High and really-low-power for VHF-Low, so we can use whip antennas like cheap FM radios. FM stations like WDRV have 8,300 watts packed into 200 kHz of spectrum, but for "high power" WBBM-TV we spread a whole 8,000 watts across 6 MHz. If you multiply it out, that makes WDRV the equivalent of a 249,000 watt TV station -- looking the other direction, A 200 kHz slice of WBBM-TV's signal gets 266 watts. It's no wonder a radio with a whip antenna down in Kankakee can still get WDRV, but an albatross TV antenna has to be hoisted atop a 30' tower to get decent VHF TV reception down there. |
I know this is grossly simplifying things, there would be other factors like new interference to aircraft and public service communications, more intermod between multiple TV stations, even FM radio itself. But VHF has just become impractical the way it is for many potential TV viewers.