Broadcasters on the 2.4Ghz Band?

Posted by Sam Churchill on

Sam Churchill, who regularly reports the sky is falling, has this warning about local broadcasters and their remote trucks:
After checking Everett E. Helm’s comprehensive list of broadcast frequencies at Portland’s Society of Broadcast Engineers website (a terrific newsletter BTW), it appears that KGW (2.4585 Ghz) and KPTV ( 2.4750 Ghz), operate in the middle of “our” unlicensed, 2.4000 GHz to 2.4835 GHz frequency band. Because video is sent, they are probably not using 802.11b at all but using different channel spacing and modulation within the band.

An ENG truck, may, in effect, wipe out any nearby 802.11b node.

This would not be good. With more local stations doing local news (channel 49 and 12) and more of it going live, this has created a frequency shortage. Broadcasters have to coordinate with each other during live remotes to prevent interference. I may be mistaken but I think broadcasters really don’t consider 802.11b Community LANs worthy of their consideration. They might fear Voicestream, Starbucks, and Sprint, however, and don’t want to be causing problems with in-home networks (although that seems unlikely).

I guess the answer is to ask Everett Helm and get his response. First I thought someone on this list could enlighten us first. Is this a problem? – Sam ———–

2458.5000 KGW PORTLAND Portland
Use: TVPU How Used: Primary ENG – News,
Receiver Location : KGW Transmitter – Skyline Blvd.

2475.0000 KPTV PORTLAND Portland, OR
Transmitter Location : Mobile
Receiver Location : KPTV Transmitter, SW Skyline Blvd., Portland, OR

Posted by Sam Churchill on Monday, March 25th, 2002 at 3:53 pm .

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