Channel 9 digital frequency

January 30, 2022
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KQED Television Transmission Information

KQED TV transmits on DT channel 30 (virtual ID: 9) from Sutro Tower in San Francisco.
The tower's geographical coordinates:
Latitude: 37.45.19 N (Decimal: 37.75556)
Longitude: 122.27.06 W (Decimal: -122.45139)
DT-9 Effective Radiated Power (ERP): 777kW
Frequency: 566-572 MHz.
Antenna height: 879' AMSL (above mean sea level).

KQED currently transmits 3 programming streams Over the Air from Sutro Tower:
DT9.1 - KQED HD (High Definition)
DT9.2 - KQED Plus (Standard Definition)
DT9.3 - KQED World (Standard Definition)

KQED TV is carried by cable companies in Northern California, including Comcast Cable, Astound Cable, Charter Cable, RCN Cable, San Bruno Cable, and SuddenLink. KQED TV is also carried on DirecTV, Dish Network and AT&T U-verse.

KQED TV is also rebroadcast by the following two translator TV stations. These translators pick up KQED-TV with an antenna, then translate KQED to another channel for local only reception. These translator stations are extremely low power and have a very short range, but do allow people in these immediate areas to receive KQED with an antenna. These translators are licensed to, operated, and maintained by the organizations listed below.

Area

Channel

Licensee

Ukiah

47

Television Improvement Assoc.

Yosemite

Yosemite Concession Services

To receive our digital programming Over The Air (OTA), one must live inside the hills surrounding the San Francisco Bay and either have an almost unobstructed view of Mt. Sutro (which may get you a picture with an indoor antenna) or an outside antenna. Unfortunately, even then, reception is not guaranteed. "Multipath" may cancel reception at a specific location.

KQED Inc. also operates two additional transmitters:

KQED Plus (call letters: KQEH), located on Monument Peak northeast of San Jose
Actual channel: 50 (Virtual ID: 54)
DT-54 Effective Radiated Power (ERP): 290kW
KQED currently transmits 5 programming streams Over the Air from Monument Peak, all in Standard Definition:
DT54.1 - KQED Plus
DT54.2 - KQED 9
DT54.3 - KQED Life
DT54.4 - KQED Kids
DT54.5 - V-Me

KQET, located on Fremont Peak northeast of Monterey
Actual channel: 25 (Virtual ID: 25)
DT-25 Effective Radiated Power (ERP): 81kW
KQED currently transmits 3 programming streams Over the Air from Fremont Peak:
DT25.1 - KQED HD (High Definition)
DT25.2 - KQED Plus (Standard Definition)
DT25.3 - V-me(Standard Definition)

KQED Plus' programming content is carried by several of the area's paid signal providers, but in a more limited geographical range. Some services may have the channel listed as KQEH, rather than KQED Plus. You need to verify with the provider you are considering as to whether you will receive KQED Plus or not.

KQED Life, KQED World, KQED Kids and V-me are carried only by Comcast Cable, and in some areas, Astound Cable.

Off Air Reception

Television signals do not go through hills. However, many different things manage to get the signals over and around hills so that you do not need to have a direct line-of-sight to our TV transmitter in order to receive its signal.

Weather conditions can affect how well the TV signal is propagated to you. If you live in a marginal or distant receiving location, changes in weather can change your reception. The signal can change with time of day and time of year. In the Bay Area, typical weather conditions in September, October, and November bring the worst reception.

Most viewers are not affected by weather changes. When a TV signal gets up to a certain minimum strength, an increase does not cause much perceptible change. As long as the signal stays above this minimum value, the viewer is not aware that the strength of the signal is changing.

Multipath

The off air TV signal is somewhat like light. It can be reflected by objects such as hillsides, buildings, automobiles, and by people. The TV receiving antenna picks up both a signal directly from the transmitter and simultaneously a number of reflected signals. These reflected signals may interfere with the direct signal. This condition is known as multipath reception. On analog TVs, it shows up as "ghosts."

Because the wavelengths of different TV stations are not the same, the multipath situation is different for each individual channel. The location of the antenna will also affect the amount of multipath interference. An area such as the San Francisco Financial district has a very strong KQED-TV signal present. However, all the reflections from buildings can make reception difficult.

A better quality antenna will minimize reception of unwanted reflected signals to reduce multipath interference.

Antennas

Outdoor Antennas
A good outdoor antenna will provide the best reception. "Consumer Reports" magazine periodically rates TV outdoor antennas. A copy should be available at your library.

A better resource available to people with internet access is the non-profit organization, AntennaWeb. They have a database based on zip code that rates reception areas by a color code. The consumer electronics industry, and specifically the antenna manufacturers, have agreed to use this color code on their products.

In general, you want a directional antenna which receives signals from one direction only. Do not use an omni-directional antenna which receives signals from all directions.

An outdoor antenna should be aimed for best reception. In most cases, best reception will occur with the antenna pointed at our KQED-TV transmitter on Mt. Sutro. In some cases, best reception will occur with the antenna pointed in a different direction. Experimentation is the key.

Outdoor antennas deteriorate with age. Metals corrode. Wind can flex the lead-in until metal breaks. An outdoor antenna should be inspected for damage annually.

Source: www.kqed.org
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