Originally Posted by rickypicky
How do you do a "QAM channel scan"?
I have a Sony SAT-HD300 and a HR10-250 (both DirecTV receivers, both have an OTA digital tuner). Can I use either of these? You mentioned a Samsung ATSC/QAM tuner in your QAM analysis thread at DSL reports. Can I use either of these instead?
I doubt if either DirecTV receiver have QAM capability. No reason for them to provide that. If your TV has a ATSC tuner, it may also do QAM. Most ATSC tuners also provide a clear QAM tuner capability. Hook up the Fios cable and do a digital QAM channel scan.
In my case, I have 2 Samsung STB ATSC/QAM tuners and a Sony HDD250 DVR which were brought for OTA reception. I've been using the newer Samsung DTB-H260F ATSC tuner to do scans of the Fios signal because it can go up to QAM 135. My scan turns up a huge number of QAM sub-channels, some 450 now, from the 55 QAM channels that are currently active, so it is rather large set to plow through. Some 80 of those sub-channels are music channels, so these are not all TV channels.
I can only watch the clear channels which are the locals and the music channels. BTW, most of the HD DC stations are mapped to their broadcast channel: 4-1, 5-1, 7-1, 7-2, and so on. All the national channels are encrypted so there is no picture for those. A cable card (or Fios box) is needed to get the encrypted channels (and a TV or box that can handle cable cards). If you want to do a scan, here is the latest breakdown I get here in northern VA, which appears to be the same elsewhere for the nationals while the locals are in the same 63 to 75+ block.
55-62: national SD channels
63-68: unencrypted local SD channels with Music Choice set on QAM 66
69-70: Not used
71-75: unencrypted local HD and SD channels
76-82: not used
83-94: national SD and HD channels (unencrypted Urge Radio channels on QAM 84)
95-102: not used
103-126: national SD and HD channels
It would be helpful if someone in the Mercer County, NJ area with the 14 HD locals were to do a QAM scan and report back here where the HD locals are and how many QAM channels they have total.