[mythtv-users] Rescanned OTA channels and Lost most of them

[Barry Martin]

Hi Allen!


> Thanks for the help. I deleted all channels and rescanned again. I lost
> one multiplex of 3 channels but other channels came through.
> Interestingly this was one of the channels where the frequecies were not
> changed and was retained the last time I did the scanning. Perhaps the
> signal was weak and it did not pick up while scanning.

I have also had to do several rescans as stations complete their repacks 
here in the Davenport (IA) market.  What I've found is just letting 
MythTV do the scan is easiest.  I haven't done the 'delete moved 
channels' step because I didn't know about it until afterwards.  What I 
get after the scan is a listing (in Editor) for the original/old channel 
plus "1", "2", "3", etc., as the 'channel numbers' for the updated 
stations.  Manually delete the old, edit the update, we're good to 
watch.  Probably easier to delete the old first -- if there's another 
rescan will do that.

As for missing channels on the scan, quite possible.  Wind gusts, etc., 
can cause that.  The tuner may be partially at fault: I've had nearly 
perfect recordings even on the windiest days with my Hauppauge 1609.  So 
would presume if the signal drops out during recording then it could 
also be too low during a scan and not detected. (Have had 'regular' TVs 
miss stations too.)

Re; missing listings, my only experience is with SchedulesDirect.  It 
may appear the listing for the updated station is empty but try to scan 
over in the Guide to look at a later time.  SD seems to post data in 
blocks. so if you scan a little after 9 a.m. you might not have data 
until noon (three hour block).  After that it is filled in.  (Manually 
record if the data block is empty!).


> All my scheduled recordings are in order and it seems to record
> correctly. But when I go to 'Watch Live TV' , it flashes for a second
> but does not show live TV. I wonder if it is trying to tine to the last
> channel that I watched which was deleted.

You are probably correct.  Towards the bottom on the configuration 
screen where one selects the button to start scanning is a setting for 
which channel to start with when selecting Live TV.  (I think it changes 
with each successful Live TV session.)  Update that setting to an old 
(not recently repacked) station.  You should be able to then Up_arrow or 
Down_arrow through the stations.  (My tuner wants the underscore versus 
'dot' as the separator -- not convenient to manually enter in a hurry!)

Hope this gave some insight!

Barry