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    How often do you re-scan for channels?


    This is a discussion on How often do you re-scan for channels? within the Converter Boxes and ATSC Tuners forums, part of the Over-the-Air (Antenna TV) category.

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    1. #1
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      Over the last few weeks I've noticed some reception problems on various channels, ie they don't show up, so i started wondering how often any one re-scans for channels. In a perfect world I would think almost never would be the answer but just curious with the actual world. I'm very hesitant to rescan as it clears my favorites list AND brings back the channels I setup to not show up.

    2. #2
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      Rescanning is however often you will like to see if any New digital tv channels are on. New digital Tv channels and digital sub channels can begin transmitting at any time with advance notice or No advance notice. And thats the way it is. Digital Broadcast Television is still new and adjustments and changes are happening. And thats the way it is. The old days of one analog channel being on forever are gone. Attwii
      Last edited by Aerial; 04-04-2012 at 03:13 PM.

    3. #3
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      I only re-scan for channels if there is a need. For example, recently some of the former low-power NTSC channels finally went ATSC. I guess I really didn't need them, but I re-scanned just to have them in the list. It is extremely rare that I would watch a religious channel or Home Shopping Network, but I still like having them in anyway.

    4. #4
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      CaptSteve,

      I rescan my Sony Bravia twice per month because I am close to Canada and they are still making adjustments to their "Digital Transition" including power outputs. Before the transition, two analog VHF channels 'made the trip' to Seattle, but so far, no digital channels.

      My Sony allows me to 'Add' digital channels whereas my Haier portable 'scans for digital channels' and any that were received prior to a new scan are lost. Its very annoying because I use three different antenna systems which requires me to rescan every time I change antennas. So, there's the best and the worst based on tuner designs.

      Jim
      Last edited by Fringe Reception; 04-06-2012 at 03:06 PM.

    5. #5

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      Rarely. Sometimes I'll do if I hear about a new channel and it's not showing up.

    6. #6
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      Quote Originally Posted by Aerial View Post
      Rescanning is however often you will like to see if any New digital tv channels are on.
      huh?

      I rescan about once a month here in LA. You never know when a new subchannel is going to be added here.

    7. #7
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      Lately I've been scanning for new channels almost every morning just to see if anything's coming in via skip.

      So far nadda thing.
      Avatar is the cover art from The Ghost Busters DVD

    8. #8
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      I only re-scan with certain converter boxes maybe once a month. My livingroom and bedroom (digital) TV sets lack the "scan add" feature, and a complete re-scan resets my channels. It's important here because I live between two sets of translators that broadcast duplicate channels - so I have to go through all my channels and eliminate the duplicates. It can become an hour long process for each of those TV sets.

      So I scan on one converter box monthly, and if there is something new worth adding I will re-scan the others. Since I do move around the valley doing installs, I have also found new channels while out and about.

    9. #9
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      My DTVpal DVR autoscans and adds channels automaticly. If a new channel comes up, it adds it within a day or two. Then I can rescan my other TVs and tuners.

    10. #10
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      Quote Originally Posted by dkreichen1968 View Post
      My DTVpal DVR autoscans and adds channels automaticly. If a new channel comes up, it adds it within a day or two. Then I can rescan my other TVs and tuners.
      Yes, my DTVpal converter box does that too, and sometimes I know it's time to rescan other tuners because of that. I love that little box, although I use it now mostly for its program guide and as a tuner for the DVD recorder now (I split the output to both the TV and DVD recorder). Everytime it has one of its little hissy fits and locks up, I worry it's finally met its maker. But it has always come back so far.

    11. #11
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      For now, I have every channel I need for both my Haier portable TV & the USB TV tuner stick for my laptop. So those don't get scanned often.

      For my Magnavox dtv box, I only have to scan if a new RF channel, or a station changes RF channels. Otherwise, subchannels aren't counted as separate channels, & get added & removed by the station, & the dtv box adds & removes them automatically. When WCIU Chicago had their subchannel list as 26.1 - 26.4 & 26.6 (no 26.5 at the time), then also had 23.1 & 48.1 tied to RF 27, my DTV box would only pick up the subchannels if I scanned. Otherwise, when I entered 27.1, it would try to go to 23.X for all subchannels. It wouldn't let me go to 26.X when I entered ther RF channel. All other stations (as long as the virtual channel wasn't the same as the RF channel), I could enter the RF channel, & it would go that virtual channel. WCIU has since gone to virtual channels 26.1 - 26.5, & 23.1 is now part of WWME-LD on RF 39 (the virtual channel for WWME-LD used to be 23.2, since 23.1 used to be on RF 27), & 48.1 was initially eliminated, but brought back once WMEU-LD signed on with their digital signal on RF 32.

      So now, I never have to do a full scan since WCIU made their virtual channels much simpler (only using virtual channels 26.1 - 26.5). I haven't decided on a TV, but whatever TV I get, will have to have a tuner that'll let me scan by RF channel, just so I never have to do a full scan everytime. I know I'll never get another Haier TV again since it requires a rescan everytime a new channel is added, or you have to change antenna positions (or change to a different antenna in a different direction).

    12. #12
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      Quote Originally Posted by dave73 View Post
      ... I know I'll never get another Haier TV again since it requires a rescan everytime a new channel is added, or you have to change antenna positions (or change to a different antenna in a different direction).
      Its frustrating, eh? One positive point for Haier portables is they do complete new scans very quickly. I bought my second one on Craigslist, knowing about the rescan issue but I can't complain too much (for thirty bucks).

      Jim : )

    13. #13
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      Quote Originally Posted by Fringe Reception View Post
      Its frustrating, eh? One positive point for Haier portables is they do complete new scans very quickly. I bought my second one on Craigslist, knowing about the rescan issue but I can't complain too much (for thirty bucks).

      Jim : )
      Mine was a refurbished model I got at Biglots for $40. It does scan fast, whether it scans for both digital & analog simultaneously, or just digital. I'm surprised mine doesn't pick up WLFM-LP on analog RF 6, but yet, I get WOCH-CA on analog RF 41 (when hooked into my outdoor antennas). WLFM-LP is rather strong for an analog station in my area (my NTSC RCA TV picks it up with no problems). While I've posted my TV Fool report before, I'll post it again: TV Fool chart.

      My big concern now will be with WUVI-LD on RF 20. The station is licensed to West Lafayette, IN, but the FCC allowed this station to relocate the station from Demotte, IN (in the Chicago DMA) to Merrillville, IN (still in the Chicago DMA), & will make it difficult to get WPVN-CD once it relocates to the Trump Tower in Downtown Chicago. I personally hope WUVI-LD doesn't make to the air, as it'll get picked up in the opposite direction of my UHF antenna pointed at Chicago, & won't be able to get anything on RF 20. TV Fool shows coverage for both stations over northern Lake County Indiana. WUVI-LD was only granted 500 watts, but will probably be enough to create havoc. I hope once WPVN-CD relocates to Chicago, that Polnet gets enough complaints about WUVI-LD (when it does go on the air in Merrillville), that it gets forced off the air (WPVN-CD has protection from interference). TSReader Lite picks up a signal from WCHU-LD on RF 33, but it gets interference that I can't get it to decode the station, & why I don't get it at all on the TV, or on my DTV box.

    14. #14
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      When I got home last night I noticed CBS (and the Masters) was nowhere to be found. Rescanned and there it was. I noticed this happened to Fox last week but it reappeared later. I assumed it was since Fox is the farthest station and it had just dropped out.

    15. #15
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      Originally Posted by dave73

      ... I know I'll never get another Haier TV again since it requires a rescan everytime a new channel is added, or you have to change antenna positions (or change to a different antenna in a different direction).
      I have an 7" RCA portable, and I'll never buy another one. It doesn't have a signal meter, but even worse, it doesn't have a hard on/off switch. It only goes into standby mode when you turn it off! So, if you charge it and put it away for the next power outage / emergency, your batteries are dead when you need it the most. I could charge it from my car battery, but of course it didn't come with a car cable - I had to make one.

      My biggest beef with all the portables I've seen is that they have built-in custom rechargeable batteries. It would be much better if the ran off standard replaceable (rechargeable) AA / AAA batteries. I can't even disconnect the batteries to prevent discharge in these things without removing lots of little screws and opening the case.
      Last edited by MrPogi; 04-09-2012 at 04:25 AM.

    16. #16
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      The only time I do is when one of my Favorites doesn't show up, and that's infrequently. I too have a unit which notifies when a new channel comes on line, but beyond confirming that, I just don't. My main peeve is that the Channel which is supposed to be sending out date/time doesn't. It's a real hassle when we have a power interruption... and that's pretty frequently around here.

      PS: HAY !, we have a "Thanks" tabulation...that's cool !
      Last edited by SWHouston; 04-09-2012 at 08:49 PM.

    17. #17
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      Never i am frustrated never get new channels just loose, channels in the scans and also image quality is sometimes awful, if watch a soccer match see the players motions slow and if watch movies the same bad motion speed just annoying to the eyes see images with hiccups.

      And this is with my rooftop antenna and regular digital set top box with a colleague at work his phone had DTV Turner for one second signal so tried of watch TV but just got freezed images and hiccups inside of a supermarket. That is for get an idea of how bad is our system



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    18. #18
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      Never, over here all modern TVs will automatically add new subchannels from our 5 transmitters on each site (they are detected when changing to any of that broadcaster's channels), A new network would be big news so we'd hear about it well in advance.

     

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