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Saturday, November 2 2019

Arizona TV Station Update - October 2019

As always, questions, additions, comments and corrections welcome.

Programming Changes

  • KOLD-TV 13.x (32/13) Tucson (Gray Television Licensee LLC) has been announced as a charter affiliate of the new Circle TV diginet, set to launch in January. Circle TV is a joint venture between Opryland Entertainment Group and Gray Television, and plans to offer both linear television and an OTT (over-the-top) streaming service. The diginet will most likely appear on channel 13.3, which is currently vacant.
  • K14RK-D 38.x Phoenix (Spanish Independent Broadcast Network LLC) has dropped Car Credit TV from its lineup and brought Rev'n back. Channel 38.5 is now PAWS, AKA the squirrel channel, and channel 38.7 is once again Rev'n.

Continue reading...

Tuesday, October 1 2019

Arizona TV Station Update - September 2019

As always, questions, additions, comments and corrections welcome.

New Licenses

  • K20FO Sierra Vista (KVOA License LLC) requested and was granted a license to cover its displacement flash cut to digital. Technical specifications: Ch 28; TL 31° 28' 54" N, 109° 57' 35" W (Juniper Flats); ERP 15 kW directional (1° electrical beam tilt); 657 m.
  • K45LU-D 5.x Window Rock (The Navajo Nation) requested and was granted a license to cover its displacement construction permit. Technical specifications: Ch 33; TL 35° 40' 51" N, 109° 3' 11" W (Tribal Hill Dr. near Roswell Dr.); ERP 2.52 kW directional (1.75° electrical beam tilt); HAAT -42 m. (21 m. AGL).

Continue reading...

Thursday, September 5 2019

Arizona TV Station Update - August 2019

As always, questions, additions, comments and corrections welcome.

Programming Changes

  • KVOA 4.x (23) Tucson (KVOA License LLC) has been spotted testing two new subchannels, 4.4 and 4.5. Channel 4.4 has been announced as the Tucson affiliate of the DABL lifestyle network, which launches September 9. It is unknown whether channel 4.5 will actually debut, and if so, what programming it will carry. The new subchannels will also appear on its translators.
  • KPHO-TV 5.x (17) Phoenix (KPHO Broadcasting Corporation) has been announced as the Phoenix affiliate of the DABL lifestyle network that launches September 9. DABL is expected to air on channel 5.3 and will also appear on KPHO's translators.

Continue reading...

Monday, September 2 2019

Doug Lung Shout Out to RabbitEars Search Map

Doug Lung wrote an article on Phase 4 of the repack for TV Technology, and in doing so, highlighted the RabbitEars Search Map as a tool to use for resolving reception issues. Thanks, Doug!

Link is here: https://www.tvtechnology.com/repack...

Tuesday, August 13 2019

Away from Keyboard

This is a note that I will be out of town and away from my keyboard until the middle of next week. I may find a bit of time here and there to work on things, but spent yesterday on a plane and am now several time zones away from home. Don't be surprised if you don't hear from me for a while.

Tuesday, August 6 2019

Arizona TV Station Update - July 2019

The Arizona TV Station Update covers news about TV stations viewable in my home state of Arizona. I claim no rights to the format, so if anyone wishes to report news about other regions, please contact the webmaster.

As always, questions, additions, comments and corrections welcome.

New Licenses

  • KEJR-LD 40.x Phoenix (HC2 Station Group Inc.) has been granted a license to cover its displacement construction permit and to change towers within the South Mountain antenna farm. Technical specifications: Ch 32; TL 33° 19' 57" N, 112° 3' 59" W (South Mountain); ERP 15 kW directional (1° electrical beam tilt); HAAT 471 m.
  • KTVP-LD 23.x Phoenix (HC2 LPTV Holdings Inc.) has been granted a license to cover its displacement construction permit and to change towers within the South Mountain antenna farm. Technical specifications: Ch 23; TL 33° 19' 57" N, 112° 3' 59" W (South Mountain); ERP 15 kW directional (1° electrical beam tilt); HAAT 471 m.

Continue reading...

Sunday, July 21 2019

RabbitEars Search Map Enters Public Beta

I'm pleased to launch the RabbitEars Search Map into public beta. I mentioned in my previous site update that I wanted to do it, but it stuck in my head and I decided to buckle down, dedicate most of my evenings and weekends to it. It's paid off, and I think it will work out really well.

So here's where to go see it: https://www.rabbitears.info/searchm...

It gives multiple means of choosing a location, the results have a handy link to a page that anonymizes the results, it's a ton faster than the existing search code, and there are nifty maps and diagrams to help understand what is going on in specific situations. Please feel free to provide as much feedback, good and bad, as possible. I want to know what I got right and what I got wrong. If I got things wrong, I can probably adjust them.

Beyond that, there are a few things I want to note about it.

First, if you have questions, please be sure to read the instructions. If they're not clear and/or don't answer your question, please let me know. I want them to hold the answers to all the questions people have, if possible.

Second, the terrain path profiles remain under construction. If at some point you look at it and it looks wrong or doesn't work, wait a few minutes and try again. I'm probably working on it. If it lasts a long time, let me know as I may not have noticed that I broke it, or you may have found a corner case that I need to investigate. But the key thing I'm still working on is trying to make it possible to either adjust the height of the display or, preferably, automate the resizing of the height. It's proving more difficult than I expected, and I decided not to hold the release of the whole tool over that one item.

Third, unlike other things on the site, the underlying database is a snapshot of the RabbitEars database as computed each morning. This was done to help speed things along; by dumping the database once into a simplified format, rather than having to parse all the LMS tables each time a search is run, the speed was drastically improved. Additionally, in the interest of consistency, these rows are stored along with the results for a study, so the information in the result link should remain consistent even if the database changes. The only exception is the repack data column; that is tied to live data because it may provide an insight into what's going on for someone who is confused about the current status of things.

Fourth... I feel like I'm forgetting something. I may update this post in the next few days if I think of more comments I wanted to make.

Finally, I'd like some people to check behind me on some of the math. I'm reasonably confident in it, but having additional eyes on it would make me feel a whole lot better. There are three things, specifically, that I am concerned about.

1) The formula for converting from dBuV/m to dBmV in the unit conversions. (The dBmV is then converted to either dBm or dBuV if necessary--those conversions are fine.) I derived the formula from two other formulas with common elements, but I'm not entirely certain I applied them correctly or even that my result makes sense. I don't do a lot of these types of conversions. My end result was:

20 * LOG10 ( ( POW ( 10, ( s.field / 20 ) ) / ( .021 * s.freq ) ) / 1000 )

Where s.field is the field strength in dBuV/m, and s.freq is the center frequency of the station in question. If someone has a different formula that is more correct, please let me know.

2) The formula for earth bulge as used in the terrain path profiles. I already changed it once.

( ( 1000 ) * ( 1 / ( 2 * 6370 ) ) * ( $dist * ( $terrain_len - $dist ) ) ) / ( 4 / 3 )

Where $dist is the distance from the beginning of the profile, and $terrain_len is the total length of the profile.

3) Also in the terrain path profile, I'm a bit concerned that I am oversimplifying the geometry. I'm just applying the earth bulge formula to the terrain path profile and that's it. Does anyone think it makes a significant difference whether or not I factor in the full geometry at the transmit and receive ends, or is this good enough?

Tuesday, July 9 2019

FCC Database Conversion and Site Usage Questions

While I moved most of the underlying FCC database-driven things on RabbitEars from CDBS to LMS about a year and a half ago, the CDBS facility table had remained in place rather than the new LMS facility table. That has now been remedied. It's not 100% finished, as particularly the Network Grid and the Statistics pages need a lot of work that I've yet to do. I'd say I'm more than 80% there, across the board, on the move to LMS. Some things definitely need some more polish, and if you come across something that doesn't work properly, please either comment here or e-mail me with a link to the page in question and a brief description of what's wrong. (I'm aware of the problem with the TSID page, just haven't done anything about it yet.)

I'm also working toward a new TVFool-like search function. I've shown a few people a new map-driven search page, and after some thought, I've decided to rewrite the actual search code as well, in an effort to speed it up. I don't know how long this will take, but I have the basic code design figured out, and it should help. I just need to implement it, which is of course the hard part.

On a semi-related note, are there people who use the Statistics page, or the various Advanced pages? I'm trying to figure out if there are things I can discontinue, as some of the maintenance is pretty hard on some of these things, and I don't really use them. So if nobody else does... (For the record, I am definitely keeping the Network Grid, just that it needs a complete overhaul as it is one of the slowest pages on the site. I want to do a complete overhaul and upgrade at once rather than upgrade it and then overhaul it.)

Thursday, July 4 2019

Arizona TV Station Update - June 2019

The Arizona TV Station Update covers news about TV stations viewable in my home state of Arizona. I claim no rights to the format, so if anyone wishes to report news about other regions, please contact the webmaster.

As always, questions, additions, comments and corrections welcome.

New Licenses

  • KEJR-LD 40.x Phoenix (HC2 Station Group Inc.) has requested a license to cover its displacement construction permit and to change towers within the South Mountain antenna farm. Technical specifications: Ch 32; TL 33° 19' 57" N, 112° 3' 59" W (South Mountain); ERP 15 kW directional (1° electrical beam tilt); HAAT 471 m.
  • KTVP-LD 23.x Phoenix (HC2 LPTV Holdings Inc.) has requested a license to cover its displacement construction permit and to change towers within the South Mountain antenna farm. Technical specifications: Ch 23; TL 33° 19' 57" N, 112° 3' 59" W (South Mountain); ERP 15 kW directional (1° electrical beam tilt); HAAT 471 m.

Continue reading...

Monday, June 10 2019

Arizona TV Station Update - May 2019

As always, questions, additions, comments and corrections welcome.

New Licenses

  • KFPB-LD 50.x (25) Globe (Globe LPTV LLC) has been granted a license to cover its displacement construction permit. Technical specifications: Ch 25; TL 33° 19' 57" N, 112° 4' 0" W (South Mountain); ERP 5.5 kW directional (2.5° electrical beam tilt); HAAT 480 m.

Continue reading...

Thursday, May 2 2019

Arizona TV Station Update - April 2019

As always, questions, additions, comments and corrections welcome.

New Licenses

  • KVPA-LD 42.x (34) Phoenix (KRCA License LLC, Debtor-in-Possession) requested and has been granted a license to cover its construction permit to vacate the 600 MHz band. Technical specifications: Ch 34; TL 33° 19' 57" N, 112° 4' 0" W (South Mtn.); ERP 15 kW directional (2° electrical beam tilt); HAAT 465 m.
  • K38GR-D 15.x Meadview (Mohave County Board of Supervisors) requested and has been granted a license to cover its construction permit to vacate the 600 MHz band. Technical specifications: Ch 21; TL 35° 51' 48" N, 114° 5' 48" W (Patterson Slope); ERP 1.05 kW directional; HAAT 218 m.

Continue reading...

Monday, April 8 2019

Arizona TV Station Update - March 2019

As always, questions, additions, comments and corrections welcome.

New Licenses

  • KASW 61.x (27) Phoenix (Nexstar Broadcasting Inc.) has been granted a license to cover its final post-repack facilities. Technical specifications: Ch 27; TL 33° 20' 1" N, 112° 3' 47" W (South Mtn.); ERP 445 kW directional (0.95° electrical beam tilt); HAAT 551 m.]
  • K39FY Zuni NM (Nexstar Broadcasting Inc.) has requested a license to cover its transition to digital on RF channel 26. Its new call sign will be K26OV-D. Technical specifications: Ch 26; TL 35° 6' 50" N, 108° 44' 8" W (E of Zuni Pueblo NM); ERP 0.83 kW directional; HAAT 94 m.

Continue reading...

Saturday, March 2 2019

Arizona TV Station Update - February 2019

As always, questions, additions, comments and corrections welcome.

With Repack Phase 2 well underway, things have become very quiet in Arizona and surrounding communities in California, Nevada, Utah and New Mexico.

Programming Changes

  • K36NE-D 43.x Las Vegas NV (HC2 Station Group Inc.) has once again added channels 43.2 and 43.3, but instead of Seventh-Day Adventist programming provided by the station's previous owner, these subchannels now offer infomercials and shopping. Channel 43.2 is now OnTV4U.

Continue reading...

Wednesday, February 6 2019

Arizona TV Station Update - January 2019

As always, questions, additions, comments and corrections welcome.

New Licenses Requested or Granted

  • KASW 61.x (27) Phoenix (Nexstar Broadcasting Inc.) has requested a license to cover its final post-repack facilities. Technical specifications: Ch 27; TL 33° 20' 1" N, 112° 3' 47" W (South Mtn.); ERP 445 kW directional (0.95° electrical beam tilt); HAAT 551 m.
  • KHRR 40.x (16) Tucson (NBC Telemundo License LLC) has been granted a license to cover its final post-repack facilities. Technical specifications: Ch 16; TL 32° 14' 56" N, 111° 6' 59" W (Tucson Mtns.); ERP 396 kW directional (0.75° electrical beam tilt); HAAT 622 m.

Continue reading...

Thursday, January 10 2019

Arizona TV Station Update - December 2018

Wishing all a blessed and prosperous 2019!

As always, questions, additions, comments and corrections welcome.

New Licenses

  • KTAZ 39.x Phoenix (NBC Telemundo License LLC) has requested a license to cover its repack construction permit. Technical specifications: Ch 29; TL 33° 20' 3" N, 112° 3' 41" W (South Mountain); ERP 595 kW directional (1.2° electrical beam tilt); HAAT 545 m.
  • KHRR 40.x Tucson (NBC Telemundo License LLC) has requested a license to cover its repack construction permit. Technical specifications: Ch 16; TL 32° 14' 56" N, 111° 6' 59" W (Tucson Mountains); ERP 396 kW directional (0.75° electrical beam tilt); HAAT 622 m.

Continue reading...

Friday, December 7 2018

Leave of Absence

My father-in-law passed away on December 2. I've been away from my e-mail since November 30 and do not know when I will return to it. I'm still making occasional minimal website updates. His obituary is here, an acknowledgment from the Virginia YMCA is here, a link to a single on which he played guitar in his youth is here, and the eulogy I gave at his funeral is below.

Continue reading...

Thursday, December 6 2018

Arizona TV Station Update - November 2018

As always, questions, additions, comments and corrections welcome.

New Licenses

  • KUVE-DT 46.x (34) Green Valley (Univision Tucson LLC) has requested a license to cover its repack construction permit. Technical specifications: Ch 34; TL 32° 24' 54" N, 110° 42' 58" W (Mt. Bigelow); ERP 185 kW directional (1.8° electrical beam tilt); HAAT 1124 m.
  • KWBA-TV 58.x (21) Sierra Vista (Scripps Broadcasting Holdings LLC) requested and has been granted a license to cover its repack construction permit. Technical specifications: Ch 21; TL 31° 45' 32" N, 110° 48' 6" W (Cedar Flat); ERP 525 kW directional (0.75° electrical beam tilt); HAAT 332 m.

Continue reading...

Tuesday, November 6 2018

Arizona TV Station Update - October 2018

As always, questions, additions, comments and corrections welcome.

New Licenses

  • KPDF-CA 41.x (22) Phoenix (HC2 Station Group Inc.) requested and has been granted a license to cover its post-transition facilities. Technical specifications: Ch 22; TL 33° 20' 0" N, 112° 3' 47" W (South Mtn.); ERP 12.6 kW directional (1.75° electrical beam tilt); HAAT 460 m.
  • K31NF-D Verde Valley (The Camp Verde TV Club Inc.) requested and has been granted a license to cover its displacement construction permit. Technical specifications: Ch 31; TL 34° 41' 14" N, 112° 7' 3" W (Mingus Mtn.); ERP 2.26 kW directional (1.75° electrical beam tilt); HAAT 765 m.

Continue reading...

Wednesday, October 31 2018

Further Update on the Google Maps Situation

As you may have noticed, with the exception of the Live Bandscan which I didn't code, pretty much every map on the site is now off of Google Maps except for the main set of coverage maps designed for individual stations. Unfortunately, I have to reproject all 57,000+ (that's 25+ GB) Longley-Rice coverage maps for display in the new format. As such, I'm currently packing them up to download to a powerful local computer, where I intend to do the reprojection offline. I expect to start that reprojection later today, and anticipate it will take at least two days, probably more. When that is finished, I'll upload them back up to the server and make the move.

I considered reprojecting the maps on the server, but a test case took 29 seconds, during which the server was sluggish. When I ran it on the local computer, it took less than 10 seconds. Suffice it to say, I concluded the local computer was the superior option.

While packing and unpacking are in process, the server may be slow as the tar command is/will be hogging the hard drive. Additionally, I plan to make no new coverage maps (or move existing ones from permits to new licenses) while the reprojection is occurring, lest I have to make modifications to a handful of individual map files after the fact.

The good news in all of this is that I've been planning to make a backup of the maps for several months anyway.

EDIT (November 3, 2018 at 5:26PM ET): And, it's done. All the maps, except for the Live Bandscan, should now be off of Google Maps. If you come across a map that still uses Google Maps, please let me know so I can correct it.

Monday, October 8 2018

Arizona TV Station Update - September 2018

This is the 100th Arizona TV Station Update on RabbitEars!!

I am pleased to share these updates with the RabbitEars community, and especially grateful to Trip Ericson for allowing me the opportunity to post here.

As always, questions, additions, comments and corrections welcome.

Continue reading...

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