You realize that the "channel" displayed on the TV is a data element, and has nothing to do with the actual RF frequency the station is transmitting on in DTV, right?
Example: Here in Denver, CBS is moving permanently off of Channel 4 VHF Low, to a Channel 30's range UHF frequency, and not going back down. A VHF antenna won't work (properly) for their signal anymore. During the transition, ABC and NBC are also transmitting on UHF, but will switch back to their VHF High frequencies on cut-over day. The entire time, those stations will still be "channels 4, 7 and 9" on the DTV TV's... the TV scans and finds them on UHF, and they transmit that "I'm channel 4", and the TV obliges and maps the USER channel 4 to the channel assignments for the lazy dude sitting on the couch with the remote control. But the DTV receiver is really receiving up in UHF spectrum. There's nothing "wrong" with the medium, but perhaps your understanding of how it works... Nate WY0X -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of wd8chl Sent: Monday, February 23, 2009 7:11 AM To: [email protected] Subject: Re: [Repeater-Builder] Somewhat OT - How to make HDTV *really* work JOHN MACKEY wrote: > If the digital is on a very different frequency, then the frequency > change is a reason why digital reception may be problematic. For > example, if you are using a VHF antenna to try to receive > a UHF digital signal, that will be problematic. I should be able to use any normal TV antenna. If it works on analog Ch 7, for instance, it should work on digital ch 7. Period. If it doesn't, there is something inherently wrong with the medium. Again, RF is RF. The antenna doesn't care how it's modulated.
