Trouble tuning PBS High Def channels Boston

Reception, channel detection, network issues, CableCARD setup, etc.
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bpedrant
Posts: 3
Joined: Tue Oct 22, 2019 8:13 pm

Trouble tuning PBS High Def channels Boston

Post by bpedrant » Tue Oct 22, 2019 8:19 pm

Hello all,

I have a
Model: HDHR4-2US
Firmware: 20190621

I am in Milford, MA with a good antenna in the attic.
I pick up about 54 channels when I run the channel scan.

The issue I have is Channels 2 and 44, both PBS. I get all the ".2" ".3" and ".4" channels, but not the ".1" high def channels.
All of the channels are 100% quality, strength about 80%

What can I do to get the .1s in the HDHomeRun?

I read somewhere that some channels are "too hot", is this a thing?

Thanks,
Brian

ebo
Posts: 548
Joined: Thu Jan 07, 2010 6:58 pm
Device ID: 1016F746, 101C8CF9, 1041F134, 10532394

Re: Trouble tuning PBS High Def channels Boston

Post by ebo » Tue Oct 22, 2019 10:01 pm

According to RabbitEars, 2.1 and 44.1 are on RF 5 (both 1080i) along with 24.1 (WFXZ, 480i) while 2.2, 2.3, 44.2, 44.3 and 44.4 (all 480i) are on RF 32, along with 15.1 (WBTS, NBC, 1080i) and 15.2 (Cozi, 480i). Many people would have trouble receiving RF 5 because they don't have an antenna designed for it. What kind of antenna do you have?

bpedrant
Posts: 3
Joined: Tue Oct 22, 2019 8:13 pm

Re: Trouble tuning PBS High Def channels Boston

Post by bpedrant » Wed Oct 23, 2019 2:24 pm

Hello,

I have a home made antenna, followed plans from some DIY post. some plywood, foil covered backer, 3" off of the wire array.
I can probably dig up the specs....

These channels used to come in very nice. Maybe they changes/upgraded at some point?
(I do get 4.1, 5.1, 7.1, 25.1 in nicely...)


Maybe I'm using the site wrong, but.....
I am in ZIP 01757, I do not see the info you posed (Thanks for the site, BTW!)

I am seeing "44‑1 (32) WGBX-TV PBS BOSTON"
And, I'm not seeing 2-2, 2-3, or any other 44.[2-4]... in the map.

Thanks,
Brian

jasonl
Silicondust
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Re: Trouble tuning PBS High Def channels Boston

Post by jasonl » Wed Oct 23, 2019 4:15 pm

So, what happened was WGBH took $161 million from the cellular industry in exchange for giving up their good UHF broadcast spot and moving to low VHF, knowing full well that this move would result in a significant portion of OTA viewers losing access to their channel. Low VHF is a terrible choice for digital TV, as there is a lot more noise to interfere with the signal and physics dictates that a much larger antenna be used to receive it. Most people no longer have antennas capable of receiving low VHF channels, as most markets eliminated it completely when analog TV was shut off. The channel move happened at the beginning of August, and WGBH pretty much immediately realized they had made a terrible mistake. They requested approval from the FCC to boost their transmit power to 5x what it was to see if that would help. It will improve things somewhat, but physics still matters more and the station will continue to be very difficult for most people to receive.

What you can try is to add some elements to your existing antenna that are long enough to pick up channel 5. Add one on each of the screw terminals where you have the balun connected, about 35" long each, sticking straight out to the sides. Make sure to check the numbers on all your stations before and after since it might have unintended consequences, but for the cost of a coat hanger it's worth a shot.

ebo
Posts: 548
Joined: Thu Jan 07, 2010 6:58 pm
Device ID: 1016F746, 101C8CF9, 1041F134, 10532394

Re: Trouble tuning PBS High Def channels Boston

Post by ebo » Thu Oct 24, 2019 12:01 pm

bpedrant wrote:
Wed Oct 23, 2019 2:24 pm
Maybe I'm using the site wrong, but.....
I am in ZIP 01757, I do not see the info you posed (Thanks for the site, BTW!)
I used the market listing for Boston which lists all of the stations in the market, both virtual and real channels. An arrow between real channels (example: 38 → 4) means the station will be changing channels during the repack. Click on any station to see its subchannels. Clicking on Technical Data gives you the transmitter's exact location, height and power, along with links to any FCC applications. WGBH is currently at 6.7 kW but has permission to try 34 kW.
bpedrant wrote:
Wed Oct 23, 2019 2:24 pm
These channels used to come in very nice. Maybe they changes/upgraded at some point?
Or downgraded, as jasonl explained.
bpedrant wrote:
Wed Oct 23, 2019 2:24 pm
(I do get 4.1, 5.1, 7.1, 25.1 in nicely...)
Those virtual channels are actually all on UHF. 4.1=20, 5.1=33, etc. WGBH is currently the only low VHF channel. WHDT-LD will be moving from 38 to 4 but it's very low power so you probably won't get it anyway.

bpedrant
Posts: 3
Joined: Tue Oct 22, 2019 8:13 pm

Re: Trouble tuning PBS High Def channels Boston

Post by bpedrant » Sun Oct 27, 2019 1:23 pm

I did what you suggested, added the 35" wires to the middle of the antenna.

I can now receive 44.1 and 2.1! :)
The quality is not stellar, but is in the %60 range. Good enough for MythTV to tune and record now.


Thank you for the help!

Bye,
Brian

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