[PVRCNC] DTV question

[Roberts, Will]

ATSC receivers use a protocol called PSIP (Program & System Information
Protocol) that does the conversion from the RF channel to the "Channel
4.x" type channel scheme. If you look up PSIP it has a lot of cool
information similar to the program guide info. that you get from digital
cable or satellite TV. For those of us using the government "welfare
coupon" cheap ATSC tuners, most of this isn't implemented.

 

73,

 

Will AA4NC

 

 

Date: Mon, 15 Jun 2009 13:36:04 -0400

From: Richard Boyd <richardlboyd at gmail.com>

Subject: Re: [PVRC] DTV Question

To: "Jim Horton (N3KTV)" <jhorton634 at earthlink.net>

Cc: pvrc at mailman.qth.net

Message-ID:

      <6c91e9e0906151036o79546a71uae6c85360bb70eb3 at mail.gmail.com>

Content-Type: text/plain; charset=ISO-8859-1

 

This is a totally non-technical perspective on it (typical of me) but
even

though I've "heard" formerly VHF channels are switching to UHF
frequencies

actually, or whatever, the DTV converter box does some "magic" and they

still show up, "at the user interface" as the same "channels" they used
to.

 

Since over the decades "channel 4" and their callsign, as an example,
have

been more or less synonymous, part of their "brand" if you will, I guess

they worked something out that happens in the converter box so they
still

appear "on the dial" where they used to, regardless of where they are
really

sending out signal in the spectrum.

 

So, having "heard what I heard" I was a little surprised to see that all
the

"good ole" channels were still on the same number on the box, at least
here.

 

73 - Rich  KE3Q