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PostPosted: Sat Mar 17, 2007 5:38 pm 
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Joined: Sun Mar 19, 2006 10:42 am
Posts: 89
Hi everyone,

I have a pair of HD5500 working well with OTA HD signals that I receive from the US (NBC, CBS, 2xPBS, FOX). However, there are a couple of channels that I can't tune that are broadcast locally (CBC and SRC in Montreal). When I perform a scan in mythsetup, I get a signal lock, then it tells me that there are "no tables". Running a scan in ssh with a couple of -v's shows that there are "filter timeouts". I also increased the filter timeout with the -5 option to no avail.

Not really sure where to go from here however, after adding the channel, myth shows the "L___" and tells me it can't lock.

I don't think that this is a signal strength issue since I am in Montreal close to these broadcast points (relative to the US channels that I pick up).

Any thoughts / guidance would be very much appreciated. I am running R5E50.

tks!


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PostPosted: Sat Mar 17, 2007 7:50 pm 
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Joined: Fri Oct 20, 2006 12:04 pm
Posts: 905
Location: LA, CA
I have the same issue with one channel. Won't Lock consistantly. I have not been able to resolve with an outdoor antenna. I can get a 99% signal but no Lock.

Do you sometimes get lowercase letters within the ( )s? This Docmight help.


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PostPosted: Sun Mar 18, 2007 6:25 am 
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Joined: Sun Mar 19, 2006 10:42 am
Posts: 89
Thanks for the link ... Now that you mention it, yes, my "L" is lowercase ... however, this is all that I ever get (none of the other letters). Is the channel that you have problems with located close to you? Are you downtown with lots of buildings? I have read that with 8VSB, reflections and scatter can be very problematic and that a low powered directional antenna may be necessary.

This is what I get when I scan for the problematic local channels:

scan -vvvvv -5 cbcrc-ATSC
scanning cbcrc-ATSC
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
>>> tune to: 503028615:8VSB
>>> tuning status == 0x1f
add_filter:1377: add filter pid 0x1ffb
start_filter:1317: start filter pid 0x1ffb table_id 0xc8
update_poll_fds:1297: poll fd 4
add_filter:1377: add filter pid 0x0000
start_filter:1317: start filter pid 0x0000 table_id 0x00
update_poll_fds:1297: poll fd 5
update_poll_fds:1297: poll fd 4
WARNING: filter timeout pid 0x0000
remove_filter:1385: remove filter pid 0x0000
stop_filter:1363: stop filter pid 0x0000
update_poll_fds:1297: poll fd 4
WARNING: filter timeout pid 0x1ffb
remove_filter:1385: remove filter pid 0x1ffb
stop_filter:1363: stop filter pid 0x1ffb
dumping lists (0 services)
Done.

or using dtvscan:

dtvscan -dvb 0 -fm -c 19:21 -o cbcrc.dtvscan
dtvscan ver 1.0.4 - by Jack Kelliher (c) 2002,2005,2006
Opened FE:/dev/dvb/adapter0/frontend0 3
Opened DMX:/dev/dvb/adapter0/demux0 4
Opened DVR:/dev/dvb/adapter0/dvr0 5
channel = 19 VSB_8
Signal: 7103
look for sync
Unable to recieve valid packets
no pid or atsc tables found
channel = 20 VSB_8
channel = 21 VSB_8

Thanks!


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