Originally Posted by vman41
Anybody else having trouble with channel 28 recently? It's like they are sending the wrong PSIP data or soemthing. One of my tuner displays it as 36-3 and the other can't get a stable lock.
Noticed that last night while checking what the Columbus DT's that were coming in where doing these days while I had my antenna aimed towards Columbus in order to watch the Bengals game on WCMH 4 -- instead of waiting for the "delayed" version from the Dayton/Cincy locals.
Last night anyway -- Zenith HDV420 wasn't showing PSIP remapping info from WTTE-DT 36(Fox 28) and was showing 36.3 as well. It was decoding A/V streams from WTTE-DT just fine, though. Didn't get a chance to check my other receivers.
I think the .3 for MPEG program # is happening from many/most stations these days because of the FCC's 1/05 requirement that the first stream be located at or above Hex30 address -- Beginning around that time, most stations began showing up with x.3 as their first MPEG2 program # on my DTC-100 with the PSIP turned off(the only STB I know of that lets you do this).
Originally Posted by phousley
I don't know what a PSIP is,
It's what stations use to send data such as virtual channel remapping infoOTA guide info/etc/etc. See here for more info :http://www.psip.org/
Update: From what I've been able to gather with different receivers+others reports when stations have had "PSIP issues" over the past few years :
For channel remapping PSIP function (example WTTE-DT Actually transmits on UHF channel 36, but Usually remaps to virtual channel 28.1) :
Some receivers "check" the PSIP info the station is sending each time you tune to it, and use that info ..
Some receivers use whatever remapping info that was being sent at the time of your last "auto channel scan", and keeps that info in it's own "virtual channel" table ...
I think Some D* receivers use the info from D*'s EPG in at least some way with channel remapping instead of what the station is sending ...
In some cases Some receivers may need a "rescan" when a station changes it's PSIP data, even if the station is sending "proper PSIP", in order to decode the streams anymore ...
"Different" things can happen with different receivers when a station changes it's PSIP, or is sending improperly configured PSIP info.