A construction project in the area of the television broadcast transmission towers on South Mountain in Phoenix will cause intermittent signal issues for some 3TV (KTVK) and CBS 5 (KPHO) viewers until January 2019.

The signal power for both 3TV (KTVK) and CBS 5 (KPHO) will be periodically lowered substantially for the safety of the construction workers.

This is mandated by law.

[3TV / CBS 5 ENGINEERING TROUBLE LINE: 602-207-3652]

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The signal power will be lowered from 9 a.m. to 5 p.m. and will affect some viewers who receive 3TV/CBS 5 over the air (OTA) with an antenna.

This does not affect anyone receiving 3TV/CBS 5 via satellite, cable or internet streaming.

Primetime television hours will be broadcast at full power.

Thank you for your patience regarding this matter.

>2018 FCC OTA SPECTRUM REPACK<

What is “The spectrum?”

The spectrum is the amount of available RF frequencies shared by radio, television and the cellular phone industry. Think of it like a pie -- it is a set range of usable frequencies of which radio/tv/cellular must all share. Each industry has its own range to which they are assigned within the overall spectrum. Recently the FCC has decided to re-allocate frequency ranges that currently belong to TV (UHF channels 38 and higher) to be repurposed for use by the cellular phone industry. Thus the term "repack" -- this is the process whereby TV stations using UHF channels greater than 38 must be "re-packed" into the spectrum to available TV channel numbers between 2 and 37. This nationwide federally mandated project began its maintenance phases in April 2017 and is expected to continue through at least July of 2020.

How does this affect 3TV and CBS 5?
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At South Mountain, 3TV (RF 24) and CBS 5 (RF 17) are not directly affected and thus 3 and 5 do not themselves need to be "re-packed." The reason 3 and 5 in PHX will be affected by this overall repack project is due to the size of the antenna farm at South Mountain AND the amount of Radio and TV stations with towers adjacent to or shared by 3TV and CBS 5. For the safety of crews working to repack other south mountain stations, both 3TV and CBS 5 transmitters will need to go to reduced power or off the air entirely at times during these work windows.

PHASE 6 | Sept. 1 - Oct. 18

During this phase, towers adjacent to or shared with KPHO CBS 5 will be undergoing this repack-related work. This means that upon the request of the repacking stations during the Monday-Friday 9-5 work windows CBS 5 will need to go to reduced power or off the air entirely. Some work may also be performed on weekends, causing the same program disruptions.

PHASE 7 | Oct. 19 – Jan. 17, 2019
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During this phase, towers adjacent to or shared with BOTH KPHO CBS 5 AND KTVK 3TV will be undergoing repack related work. This means that upon the request of the repacking stations during the Monday-Friday 9-5 work windows 3TV and CBS 5 will need to go to reduced power or off the air entirely.

Who is affected?

ONLY OTA (over the air) viewers -- viewers using cable, satellite or streaming will be UNAFFECTED. Reduced power modes will mostly affect people in rural areas OR people whose OTA (over the air) reception is from indoor TV antennas. When the signal is off the air entirely -- OTA viewers using South Mountain will be off the air. South Mountain OTA also feeds translators (aka repeaters or boosters) in other parts of central and northern Arizona, so viewers in those areas may see black screens during the full-on 3TV or CBS 5 outages at South Mountain.

FOR ADDITIONAL information on the greater scope of these FCC projects you can go to nab.org/repacking or to fcc.gov.

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Copyright 2018 KPHO/KTVK (KPHO Broadcasting Corporation). All rights reserved.