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post #8761 of 8790 Old 05-28-2015, 05:48 PM
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KPTV seems to have decided to carry the East Coast Cozi feed. I like it.
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post #8762 of 8790 Old 05-31-2015, 12:23 AM
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Quote:
Originally Posted by TalkingRat View Post
While I was looking for updates on Cozi and Laff launch dates, I noticed that KPDX is getting a subchannel too -- Escape TV (49.2).
Right now KPDX is carrying two subchannels, RetroTV and KWVT. PSIP makes it hard to know what stations are carrying what channels these days.

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post #8763 of 8790 Old 05-31-2015, 11:56 AM
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Originally Posted by scowl View Post
Right now KPDX is carrying two subchannels, RetroTV and KWVT. PSIP makes it hard to know what stations are carrying what channels these days.
KWVT and Retro TV are carried on KWVT [Real Frequency 49, using virtual channels 17.1, 17.2, 27.1, 37.1], not KPDX [Real Frequency 30, virtual channel 49.1. Escape TV will presumably by virtual 49.2].

KWVT is too unreliable for me to pay attention, but I recall the mess its numbering system made of converter box mapping. It didn't help any that Retro TV virtual 27.1 was already assigned to real frequency 27 (KSLM) when KWVT tried to assign it to real frequency 49.
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post #8764 of 8790 Old 05-31-2015, 12:51 PM
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Quote:
Originally Posted by TalkingRat View Post
KWVT and Retro TV are carried on KWVT [Real Frequency 49, using virtual channels 17.1, 17.2, 27.1, 37.1], not KPDX [Real Frequency 30, virtual channel 49.1. Escape TV will presumably by virtual 49.2].
Oh, there's a station broadcasting a virtual channel that's the same as another channel's real frequency. No wonder I'm confused!

Did KPDX not move back to 49 after the analog shutdown?

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post #8765 of 8790 Old 05-31-2015, 01:14 PM
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No, KPDX moved from channel 48 to channel 30, which was KPTV's digital before the transition. KPTV itself moved back to 12.

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post #8766 of 8790 Old 10-14-2015, 02:42 PM
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Laff and Escape have launched.
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post #8767 of 8790 Old 10-21-2015, 11:14 PM
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Hi Guys,

I moved to Beaverton recently. I've got excellent signal on KOIN, KATU, and KGW, yet I sometimes see digital artifacts when watching TV shows. Sometimes, the bottom half of the screen goes green or grey for a fraction of second. Other times, there's a motion artifact (as happened about 9 minutes into The Goldbergs tonight). It doesn't happen all that often - probably once or twice a week on The Late Show with Steven Colbert, for example.

However, I previously lived in another market altogether and **never** saw artifacts. I was using an older HDHR3 there, and was more than 60 miles from the transmitter tower.

Are these kinds of issues typical on the Portland stations, or is there perhaps something wrong with my setup??

I've tried a 12db signal attenuator, on the theory that I might have a multi-path or overdeviation issue. It has dropped my signal strength from 100% to 95%-98% on most stations, but the artifacts don't really seem to have decreased.

Any comments, thoughts, or suggestions?
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post #8768 of 8790 Old 10-22-2015, 11:28 AM
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Your problem could be 1) strong multipath interference or 2) interference from another source. The two are difficult to tell apart without instruments. You report problems on KOIN (RF chan. 40), KATU (RF chan. 43) and KGW (RF chan. 8). KOIN and KATU are literally transmitted from the same antenna on Sylvan; KGW from its own antenna 3/4 mile to the north west. This probably means of multipath isn't the problem. However, if you are using an indoor antenna, if moving it (i.e. turning it or physically moving it from place to place) during the interference helps, then multipath might be the problem.

As for interference, it can be very difficult to find. Interference to both a high-VHF signal (ch. 8) and UHF signals (ch. 40 and ch. 43) is unusual. Your experiment with the 12 dB pad probably indicates that receiver overload is not the problem. Here are some experiments you might try. Tune from channel to channel when you are having problems and see if it occurs on all channels? Try another set. If possible to simultaneously watch another set tuned to the same channel and hopefully using the same antenna and see if the problem is in them both. If you are using an indoor antenna try moving it well away from the TV set in case it is the set's own EMI that is causing the problem.


And finally, the one that takes the most time and almost always fails, take note of what's active in your house when the problem occurs and try to identify an interference source. This can lead to really whaco results. Charlie Rhodes received a complaint of failure to receiver a high-VHF station when a LED light was turned on. I subsequently measured one brand of LED light that emitted large amounts of EMI over that TV band.


I am interested in your problem and have lots of time. If you would like to have a consultation at your residence please let me know. My name is Linley Gumm. You can Google my name for a reference. E-mail me at gumm at easystree dot net if interested.
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post #8769 of 8790 Old 10-23-2015, 02:19 PM
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Quote:
Originally Posted by LinleyG View Post
Your problem could be 1) strong multipath interference or 2) interference from another source. The two are difficult to tell apart without instruments. You report problems on KOIN (RF chan. 40), KATU (RF chan. 43) and KGW (RF chan. 8). KOIN and KATU are literally transmitted from the same antenna on Sylvan; KGW from its own antenna 3/4 mile to the north west. This probably means of multipath isn't the problem. However, if you are using an indoor antenna, if moving it (i.e. turning it or physically moving it from place to place) during the interference helps, then multipath might be the problem.

As for interference, it can be very difficult to find. Interference to both a high-VHF signal (ch. 8) and UHF signals (ch. 40 and ch. 43) is unusual. Your experiment with the 12 dB pad probably indicates that receiver overload is not the problem. Here are some experiments you might try. Tune from channel to channel when you are having problems and see if it occurs on all channels? Try another set. If possible to simultaneously watch another set tuned to the same channel and hopefully using the same antenna and see if the problem is in them both. If you are using an indoor antenna try moving it well away from the TV set in case it is the set's own EMI that is causing the problem.


And finally, the one that takes the most time and almost always fails, take note of what's active in your house when the problem occurs and try to identify an interference source. This can lead to really whaco results. Charlie Rhodes received a complaint of failure to receiver a high-VHF station when a LED light was turned on. I subsequently measured one brand of LED light that emitted large amounts of EMI over that TV band.


I am interested in your problem and have lots of time. If you would like to have a consultation at your residence please let me know. My name is Linley Gumm. You can Google my name for a reference. E-mail me at gumm at easystree dot net if interested.

Rereading this, I note that I should have said, "... a FREE (i.e. no charge ever) consultation ..."


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post #8770 of 8790 Old 10-23-2015, 11:43 PM
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Hi Linley,

Thanks for the very thorough response. Based upon what you wrote, I'm afraid that my original post was insufficiently specific, so I'm going to add a little bit more detail.

I'm using a Windows Media Center PC to record shows off of Live TV using a SiliconDust HDHomeRun Dual Tuner. It is hooked up to a directional antenna that I purchased from DennyAntennaService.com which is designed specifically to receive UHF and the portion of the VHF band that remains in use for TV after the digital transmission (called the EZ-HD antenna). The antenna is located in my attic and points in the general direction of the transmission towers to the Northeast, which are visible without obstruction from my house. The HDHomeRun tuners consistently report 100% signal and symbol strength. Even with the 12db attenuator, my signal strength is still roughly 95%.

I never, ever watch live TV. Occasionally, when I'm watching a pre-recorded show, I'll encounter an artifact of some kind, i.e. bottom half of screen goes gray or green for a brief moment, or a small part of the screen will do so, or I'll observe some motion artifacts (duplicate images) on a portion of the screen that's moving. Most shows record just fine, without any issues, but once in a while, maybe once every 5 shows or show, I'll see one of the above. I often do record more than one show at a time, and I've gone back and watched the others at the same moment and do not recall seeing an artifact at the same time in the other recording.

This may well just be par for the course with the broadcasters here in Oregon. For example, today, during the CBS Evening News, I saw a bit of green appear on a child's chin (right before she hugged a horse), and then immediately called a friend who lives in the area and records OTA using his Dish Network with the optional TV Tuner module. He checked his recording and observed the **very same artifact**. I also checked a recording made back in California (using a friend's WMC set-up similar to mine) and found no artifact. So, at least in this particular case, it appears to be a problem with the encoding done by the transmitter and not by anything particular about my set-up.

I've only posted here because I never, ever saw this kind of artifacting when I lived in California. However, there I was in the biggest TV Market in the nation (L.A.), and so I suspect that those stations spend a lot of money making sure that their equipment is perfect.

So, at the outset, I'm just wondering if you guys here ever see such artifacts on the broadcasts, and if so, how often??

However, in response to your offer, I'd definitely open to having a fellow ham come by and see what he can see. I'll PM you.

P.S. I'm pretty sure that I've seen a car with your call sign driving around town. Everytime we do, my wife asks me if I know you.

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Rereading this, I note that I should have said, "... a FREE (i.e. no charge ever) consultation ..."


Linley
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post #8771 of 8790 Old 10-24-2015, 12:25 AM
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FYI- You left off the t at the end of easystreet dot net. It took me a while to figure that out!

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My name is Linley Gumm. You can Google my name for a reference. E-mail me at gumm at easystree dot net if interested.
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post #8772 of 8790 Old 10-29-2015, 03:24 PM
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Ever Tuned to These Stations?

On the FCC's list of stations that eligible to sell their air rights in the upcoming re-pack auction are five low power class-A stations owned by WatchTV. They are KORS (ch. 16), KOXI (ch. 20), KORK (ch. 35) KKEI (ch. 38) and KOXO (ch. 41). Their current license shows them to be transmitting from KGW's site in Sylvan. After careful measurements in Aloha and Vancouver WA over the past few weeks, these stations apparently are silent at the present time. In fact, non of the misc. data I have taken over the past few years shows them ever having been on the air. However, in years past, they had at least a temporary operating license for a site about 10 miles east and north of Vancouver so they might not have been observable from my house in Aloha back then. My question is if anyone has noted any or all of these signals on the air over the past four or five years?


Thanks.
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post #8773 of 8790 Old 02-24-2016, 04:27 PM
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what happened to 41.2 and 42.3? When did they go off the air. I realize they were dupes of 22.1 and 22.3,.

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post #8774 of 8790 Old 03-21-2016, 06:19 PM
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Fans of old standard definition shows should be happy that KOIN added getTV and Decades.

I hope this means KOIN got a new encoder because their HD channel was constantly pixelating at full ATSC bandwidth.

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post #8775 of 8790 Old 05-05-2016, 07:29 AM
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Do station engineers check their PSIP's? Maybe not. A Las Vegas low power station uses call letters KPVT, however their 2.2 sub-channel is identified as "KPTV". Has Portland annexed Las Vegas?

Will the last subscriber leaving Dish Network please turn off the satellite.
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post #8776 of 8790 Old 09-05-2016, 08:46 AM
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It's been a long time since I've visited this thread. Is anyone experiencing issues with KGW 8.1? Terrible signal that began around or right before the Olympics. I'm in the Cooper Mtn Beaverton area and have line of sight towards the tower array on the hills. I'm getting clean channels except for KGW.

Did they change something or drop their equipment? My TV shows signal of 60-70%.
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post #8777 of 8790 Old 09-06-2016, 07:10 AM
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Originally Posted by blunty View Post
It's been a long time since I've visited this thread. Is anyone experiencing issues with KGW 8.1? Terrible signal that began around or right before the Olympics. I'm in the Cooper Mtn Beaverton area and have line of sight towards the tower array on the hills. I'm getting clean channels except for KGW.

Did they change something or drop their equipment? My TV shows signal of 60-70%.
I've noticed the same thing. I'm line of site from Camas, WA and reception is in the 60 - 70% as well. Everything else is still very good.
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post #8778 of 8790 Old 09-06-2016, 08:56 PM
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I just tuned to 2.1, 6.1 and 8.1 and all channels seem to me to present equally sharp images. I rarely use my OTA setting so I can't tell you if anything has changed recently. I am line of sight to all the towers from high on Bull Mtn. in Tigard using an old silver sensor antenna hidden behind the cabinet my 52" Sony XBR sits on. I didn't move the antenna out from behind the cabinet as the PQ was more than satisfactory.
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post #8779 of 8790 Old 09-21-2016, 08:24 AM
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I just tuned to 2.1, 6.1 and 8.1 and all channels seem to me to present equally sharp images. I rarely use my OTA setting so I can't tell you if anything has changed recently. I am line of sight to all the towers from high on Bull Mtn. in Tigard using an old silver sensor antenna hidden behind the cabinet my 52" Sony XBR sits on. I didn't move the antenna out from behind the cabinet as the PQ was more than satisfactory.
Ha, the good ole Silver Sensor antenna. I have the same on top of the cabinet next to the tv.

I played around with pointing the antenna direction and rescanned the channels after posting my OP and the signal seems to have settled down and working better.
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post #8780 of 8790 Old 01-10-2017, 12:17 AM
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Hi, guys....Beaverton resident here exploring cutting the cord. Any suggestions for an antenna appropriate for picking OTA where I am located (near Hall and Cresmoor Drive)? I do have an old Direct TV post out back that is about 3 feet tall off the ground that I could mount an outdoor antenna on (if such a thing exists) or an old Dish Network TV mount on the northeast side of the condo I am at. Perhaps an indoor antenna would be better? Appreciate any tips or suggestions. Something less than$200, preferably $100, please.
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post #8781 of 8790 Old 01-10-2017, 12:56 PM
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Start here https://www.antennaweb.org/ and it will recommend antenna for you. You should be able to find one for $100.

I have mine in my attic.

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post #8782 of 8790 Old 01-10-2017, 04:57 PM
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OPB Plus will go HD on Monday, January 23, 2017. Not confirmed, but I'm thinking that means 10.1 and 10.2 will be 720p. OPB Kids also starts January 23, on 10.3. OPB Radio moves to 10.4.

OPB "find a channel" page has conflicting info about the changes. I wrote to them a couple weeks ago, with no response. The obvious typo in the date (2016) hasn't been corrected. The text (and schedule download) show 10.2 in HD, but the channel chart still shows OPB Plus (SD) and OPB Kids (HD). I also asked about future plans for Dolby 5.1. OPB 2/0/.0 is an issue, as the music tends to drown out dialog, and switching between music track and blended music/dialog makes my Tivo lose the Dolby signal, which adds to the audio issues.

OPB suggests you rescan if you can't find the new stations then. I don't expect issues, but if that happens, I'll double scan (first without antenna to wipe the mapping, then again with antenna connected).
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post #8783 of 8790 Old 01-13-2017, 05:57 PM
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Start here https://www.antennaweb.org/ and it will recommend antenna for you. You should be able to find one for $100.

I have mine in my attic.
RE: Beaverton Antenna


If you can see the tips of the TV towers from your yard, probably almost any indoor antenna should work. You are about 5 miles from all of Portland's DTV transmitters so you should avoid any amplified antenna (an amplifier is unneeded and could overload and cause picture loss). Unlike analog TV, with DTV more signal is not better. All you need is enough signal to reliably get the receiver above threshold to make a perfect, noiseless picture.. The only reason you should need an outside antenna is if you are below a line of sight to the towers or if there is some source of nearby interference.. Then, an outside antenna might be useful to reduce multipath or to get an uncontaminated signal.


The Winegard FL-5000 flat panel antenna is a good one to try ($30). There is a $25 RCA flat panel antenna at the Beaverton Best buy that is probably quite similar (but I haven't looked at it). If an outdoor antenna is needed, almost any will probably work.


I am always interested in reception situations. I have several indoor antennas laying around if you would like to try something before you buy. Contact me at gumm at easystreet dot net if interested.


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post #8784 of 8790 Old 01-23-2017, 11:37 AM
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OPB changed lineup at 7 am. No re-scan needed for my devices.

A surprise to me, OPB 10.1 and OPB+ 10.2 are 1080i. PBS Kids 10.3 and OPB Radio 10.4 are 480i. Bitrate is a different story. Tivo shows OBP at 3,151,902 bits, while OPB+ is at 2,103,326, virtually the same as the two 480i channels. Tivo made the channel changes, but the programming hasn't been fixed yet. It's wait-and-see, but so far, 10.2 does not appear to be 10.1's equal.
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post #8785 of 8790 Old 01-24-2017, 08:04 PM
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OPB changed lineup at 7 am. No re-scan needed for my devices.
Unlike the other OPB stations, PBS Kids doesn't seem to have an option for 4:3 aspect ratio. I guess I will try to contact them and let them know.
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post #8786 of 8790 Old 01-25-2017, 01:53 AM
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Unlike the other OPB stations, PBS Kids doesn't seem to have an option for 4:3 aspect ratio. I guess I will try to contact them and let them know.
I can change aspect on PBS Kids, on both TV and Tivo. Are you viewing OTA, or on cable? Based on communications from OPB, I'm wondering if cable's getting HD, and OPB is SD.

Past experience in emailing OPB is that it's answered by non-technical people. My original email asked what resolution they would be using, and the reply (after the fact) didn't provide resolution, just "HD" vs. "SD". They said everything but OPB Radio is HD. I replied that PBS Kids is broadcasting 480i, and they said it's HD and if I see it in SD, it's my equipment. Just before the changes, someone on a PDX radio forum said he called OPB and was told PBS Kids would be HD, but OPB+ would be SD for now, and HD later. Mixed messages. I trust that it isn't my equipment coming up with one wrong reading, but if anybody's getting different resolutions for 10.3 OTA, please speak up.
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post #8787 of 8790 Old 01-25-2017, 07:30 AM
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I can change aspect on PBS Kids, on both TV and Tivo. Are you viewing OTA, or on cable? Based on communications from OPB, I'm wondering if cable's getting HD, and OPB is SD.

Past experience in emailing OPB is that it's answered by non-technical people. My original email asked what resolution they would be using, and the reply (after the fact) didn't provide resolution, just "HD" vs. "SD". They said everything but OPB Radio is HD. I replied that PBS Kids is broadcasting 480i, and they said it's HD and if I see it in SD, it's my equipment. Just before the changes, someone on a PDX radio forum said he called OPB and was told PBS Kids would be HD, but OPB+ would be SD for now, and HD later. Mixed messages. I trust that it isn't my equipment coming up with one wrong reading, but if anybody's getting different resolutions for 10.3 OTA, please speak up.
I'm viewing OTA with an OTA DVR as a tuner. PBS Kids is the first channel in this market where none of the aspect options will make a circle look like a circle rather than a tall oval. For all other channels I can make something work, like "zoom" or something. I emailed OPB and they called me within minutes to talk about it. I gave the rep what info and could, which they said they would pass on to the engineers. If it's a limitation of my setup, it has never been an issue on any other channel, so I hope they take a look at it on their end.
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post #8788 of 8790 Old 01-25-2017, 06:15 PM
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The radio forum has a couple posts confirming OTA is 480i for PBS Kids. But it does look like it's designed to be displayed in full screen format, where the circles (E/I and PBS Kids logos, for example) are circles. I have 10.3 and 10.4 aspect set on "wide" for my TV. Swintronix, I hope you find a way to be able to use aspect. Have you tried changing it on the TV side? Even when I use a Tivo tuner, it can make a difference how my TV aspect is set.
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post #8789 of 8790 Old 01-26-2017, 12:24 AM
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Quote:
Originally Posted by LinleyG View Post
RE: Beaverton Antenna


If you can see the tips of the TV towers from your yard, probably almost any indoor antenna should work. You are about 5 miles from all of Portland's DTV transmitters so you should avoid any amplified antenna (an amplifier is unneeded and could overload and cause picture loss). Unlike analog TV, with DTV more signal is not better. All you need is enough signal to reliably get the receiver above threshold to make a perfect, noiseless picture.. The only reason you should need an outside antenna is if you are below a line of sight to the towers or if there is some source of nearby interference.. Then, an outside antenna might be useful to reduce multipath or to get an uncontaminated signal.


The Winegard FL-5000 flat panel antenna is a good one to try ($30). There is a $25 RCA flat panel antenna at the Beaverton Best buy that is probably quite similar (but I haven't looked at it). If an outdoor antenna is needed, almost any will probably work.


I am always interested in reception situations. I have several indoor antennas laying around if you would like to try something before you buy. Contact me at gumm at easystreet dot net if interested.


Linley
Wow, thank you so much for the insight and offer. I'll email you this weekend.
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Quote:
Originally Posted by swintronix View Post
I'm viewing OTA with an OTA DVR as a tuner. PBS Kids is the first channel in this market where none of the aspect options will make a circle look like a circle rather than a tall oval. For all other channels I can make something work, like "zoom" or something. I emailed OPB and they called me within minutes to talk about it. I gave the rep what info and could, which they said they would pass on to the engineers. If it's a limitation of my setup, it has never been an issue on any other channel, so I hope they take a look at it on their end.
Is it working for you now? Guessing it is, because as of this morning, it's stuck on 4:3. Tivo zoom no longer works. TV aspect changes it a wee bit, it still has to be on wide to unsquish the circles, but there's no way to lose the wide black bands. No more crisp clean widescreen view.
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