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Old 06-09-2011, 09:14 PM   #1 (permalink)
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Question KUSA (Denver channel 9) off the air?

Anybody know what's up with the OTA signal from KUSA, channel 9.1 in Denver? I just got an OTA antenna (Channelmaster 2016). I'm in south Longmont (about 30 miles away), and all the other signals from transmitters on Lookout Mtn. come in fine, but I'm getting zero signal strength on 9 and 9.1. According to Wikipedia, Denver's channel 7.1 has half the transmitted power of 9.1 and is also on Lookout, but 7.1 comes in strongly. Is KUSA off the air?

Dave Beal
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Old 06-10-2011, 06:35 PM   #2 (permalink)
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Hi Dave, Welcome to OTAtalk.

Well Ch.9 is the local NBC affiliate in your area, so I don’t think that they would go off air without a reason, it could be that the transmitter had a problem or its down for maintenance (doubtful as this would be done late at night) another possible problem would be tower maintenance or a problem on/with the tower causing the transmitter to go low power or be shut down all together.

I really wouldn’t know, the best thing to do would ask someone you know in your area if they have this channel or call the station.

As far as being half the power levels Winkipedia is wrong, here is what comes up on both channels.

KUSA-DT (Digital)
Channel: 9 (9.1)
Network: NBC
Maximum ERP: 45.000 kW
Coordinates: 39.730710 -105.232100
Distance: 30.9 miles Azimuth: 193 degrees Compass: 184 degrees


KMGH-TV (Digital)
Channel: 7 (7.1)
Network: ABC
Maximum ERP: 54.000 kW
Coordinates: 39.730821 -105.232211
Distance: 30.9 miles Azimuth: 193 degrees Compass: 184 degrees

As you can see its 54 kW on CH.7 and 45 kW for CH. 9, that’s a 9 kW difference and with the difference in transmit antenna gain there should only be a -1.5 dBm difference between ch 7 and ch 9 at your location as far as the received signal, (using a VHF hi band reference antenna) so it could be back to some sort of maintenance or a possible problem at the transmitter.

I would call them or ask them online at hXXp://www.9news.com.
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Old 06-12-2011, 01:33 AM   #3 (permalink)
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Thanks, Terry. I've been out of town since I posted my question. I'll try it again tomorrow and send them email if I still get no signal.

- Dave
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Old 06-12-2011, 06:01 PM   #4 (permalink)
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9.1 is coming in today with 70-80% signal strength, according to my TV. Not sure what was going on Thursday. I'm watching the Canadian Grand Prix OTA on Fox (31.1), with a much better quality signal than over cable. Comcast is history in this house.
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