ATSC 3.0: Phoenix - Jan 2021

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Bluehawk
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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
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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
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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
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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
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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
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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
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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.

signcarver
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Re: ATSC 3.0: Phoenix - Jan 2021

Post by signcarver »

after not having an issue for several weeks (since 3/17) with 27, today it is back to that <10% SNR (around 8dB). Strength appears to have gone up a bit as well so I may try to attenuate since it was already very hot but was working fine.

any update on pbs?

bobchase
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Re: ATSC 3.0: Phoenix - Jan 2021

Post by bobchase »

signcarver wrote: Fri May 14, 2021 1:16 pm after not having an issue for several weeks (since 3/17) with 27, today it is back to that <10% SNR (around 8dB). Strength appears to have gone up a bit as well so I may try to attenuate since it was already very hot but was working fine.

any update on pbs?
How about now. Any different?

signcarver
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Re: ATSC 3.0: Phoenix - Jan 2021

Post by signcarver »

27 comes in perfectly now. With 96% SNR (I took my dev unit off line as I was trying various points on the property to maybe move the antenna to so don't have dB).

By the way I did find one place on the property that appeared to get everything without any amplification but it is right next to the heat pump and am a little concerned about possible noise from it, it will also be a hard sell to convince someone in the house that I can feed a cable from there.

Edit: Hooked my dev unit back up... strength is -33dBm and quality is 29dB on 27 now. Earlier strength reported around -25dBm with 5-8dB quality.

bobchase
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Re: ATSC 3.0: Phoenix - Jan 2021

Post by bobchase »

Thanks for the feedback. I'll get the issue permanently resolved as soon as I can. Until then, your the adopted transmitter synchronization alarm system.

Bluehawk
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Re: ATSC 3.0: Phoenix - Jan 2021

Post by Bluehawk »

Receiving: 105.1, 108.4, 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

xmguy
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Re: ATSC 3.0: Phoenix - Jan 2021

Post by xmguy »

I read on Rabbit Ears that KPNX NBC on 3.0 in Phoenix is encrypted. Is this true? If so what does it mean for HDHR4K users? I ask, because I'm concerned this may become a trend that all stations will follow to get more money.

signcarver
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Re: ATSC 3.0: Phoenix - Jan 2021

Post by signcarver »

I don't believe It has been encrypted since about October/November time frame... it was encrypted during much of the ks.

xmguy
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Re: ATSC 3.0: Phoenix - Jan 2021

Post by xmguy »

signcarver wrote: Tue May 25, 2021 12:49 pm I don't believe It has been encrypted since about October/November time frame... it was encrypted during much of the ks.
I can’t seem to find any info on how folks receive said station. I guess it might be an Evoca market?

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