ATSC 3.0: Phoenix - Jan 2021

ATSC 3.0 Forum
Bluehawk
Posts: 180
Joined: Wed Jul 08, 2015 1:37 pm
Device ID: 1031AB0B 103436F7 1054A790 1054B12E 1072B2F3 1317A118 1323884C 1080C753

Re: ATSC 3.0: Phoenix - Jan 2021

Post by Bluehawk »

Receiving: 105.1, 110.1, 112.1, 133.1, 135.1, 145.1 and 161.1. All good on Windows 10 PC , Nvidia Shield and 2020 Google Chromecast TV
.

In Glendale area north of GCC.

So glad we have well informed people in this forum, that keep us "just user" types aware of what is going on.

ComputerBlue
Posts: 5
Joined: Sat Apr 10, 2021 6:59 pm

Re: ATSC 3.0: Phoenix - Jan 2021

Post by ComputerBlue »

I tried a LTE filter, the 2020 design from SiliconDust, and I'm still getting terrible signal strength and SNR just on RF35. All the other UHF frequencies also transmitted from South Mountain are great. I've also tried different antennas and moving them around. Do you think my tuner could be faulty?

kyl416
Posts: 191
Joined: Wed Sep 17, 2014 12:09 pm
Device ID: 1080DB11
Location: Tobyhanna, PA
x 31
Contact:

Re: ATSC 3.0: Phoenix - Jan 2021

Post by kyl416 »

RF 35 is a Class A signal that's limited to 15 kW, and lower on the tower, so it's not as strong as the other Phoenix stations. (i.e. RFs 15 and 33 from the same tower are 450+ kW)

Can you post a link to a RabbitEars report for the location of your antenna?

ComputerBlue
Posts: 5
Joined: Sat Apr 10, 2021 6:59 pm

Re: ATSC 3.0: Phoenix - Jan 2021

Post by ComputerBlue »

Thanka, Kyl.

https://www.rabbitears.info/searchmap.p ... _id=249986

Looks like it should be good although my antenna is not as high as entered. Minimum height was 13 ft. I normally use rabbit ears with UHF loop just sitting on the TV stand,

jasonl
Expert
Posts: 15558
Joined: Sun Oct 28, 2007 9:23 pm
x 38

Re: ATSC 3.0: Phoenix - Jan 2021

Post by jasonl »

The signal margin is ~24dB below the worst full-power UHF channel, which is a ton. You're close enough to the towers that you could hike up there in an hour or two, so there's still a lot of signal. You live in Ahwatukee which means there's about a 99% chance your house has stucco siding, and the chicken wire in it absolutely kills radio, TV, and cell phone signals. If you can get your antenna in a place where it can look through a window to the towers, that should be enough, as long as the window doesn't have metallic tint or a metal bug screen on it.

bobchase
Posts: 39
Joined: Sun Nov 22, 2020 12:25 pm
Device ID: 10810736
x 9

Re: ATSC 3.0: Phoenix - Jan 2021

Post by bobchase »

With a tiny outside antenna in Ahwatukee RF35 has a better SNR than KPHO and KPPX. It is also within 1 dB of the other full power stations. I see the same thing at the station. The key, as @jasonl said, is to get an antenna either into the attic or outside.

ComputerBlue
Posts: 5
Joined: Sat Apr 10, 2021 6:59 pm

Re: ATSC 3.0: Phoenix - Jan 2021

Post by ComputerBlue »

Thanks for the info/analysis Jason. You are right, stucco covered chicken wire. I was not aware RF35 was a much lower power transmitter before you and Kyl told me. But I figured I was so close I should easily pick up anything.
I noticed the SNR on tuner 1 is normally slightly above 50 and tuner 0 it is slightly below. So I can watch on tuner 1 but not 0. I assume it's just natural manufacturing variance and there is nothing wrong with the device. Just marginal signal with current antenna location.
The good news is someday the big 4 networks will all move to stronger transmitters for ATSC3 I would assume.

Post Reply