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Author Topic: RF Scans - dramatic example of Venue shielding  (Read 2920 times)

Pete Erskine

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RF Scans - dramatic example of Venue shielding
« on: April 03, 2016, 12:39:53 pm »

These scans are from Andrew Outlaw at the Gaylord National Resort and Convention Center in several of their venues.

Download scans at http://www.bestaudio.com/scans-usa
Read about contributing your own scans:  http://www.bestaudio.com/spectrum-scans/
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« Last Edit: April 03, 2016, 12:49:05 pm by Pete Erskine »
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Keith Broughton

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Re: RF Scans - dramatic example of Venue shielding
« Reply #1 on: April 03, 2016, 01:23:12 pm »

When you mention "venue shielding" do you mean the RF reduction due to the basic building or a venue that has a Farday cage as part of the construction?
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Pete Erskine

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Re: RF Scans - dramatic example of Venue shielding
« Reply #2 on: April 03, 2016, 01:33:56 pm »

When you mention "venue shielding" do you mean the RF reduction due to the basic building or a venue that has a Farday cage as part of the construction?

Usually basic building but hopefully construction of new venues will take note....
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Mac Kerr

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Re: RF Scans - dramatic example of Venue shielding
« Reply #3 on: April 03, 2016, 01:36:18 pm »

When you mention "venue shielding" do you mean the RF reduction due to the basic building or a venue that has a Farday cage as part of the construction?

Very few venues actually have intentional Faraday shielding, certainly not a low bid job like a convention center. The building can provide significant RF shielding with multiple concrete walls between your mics and the outside world. With Pete's scans, the real surprise is the exhibit hall, which as a large glass wall at one end.

I do work regularly in a building that does have intentional shielding, and there is essentially no outside RF in the auditorium. As well, no inside RF gets outside (the reason for the cage).

Mac
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Keith Broughton

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Re: RF Scans - dramatic example of Venue shielding
« Reply #4 on: April 03, 2016, 01:56:01 pm »

Very few venues actually have intentional Faraday shielding, certainly not a low bid job like a convention center. The building can provide significant RF shielding with multiple concrete walls between your mics and the outside world. With Pete's scans, the real surprise is the exhibit hall, which as a large glass wall at one end.

I do work regularly in a building that does have intentional shielding, and there is essentially no outside RF in the auditorium. As well, no inside RF gets outside (the reason for the cage).

Mac
I would imagine cell phone repeaters would be necessary then.
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Mac Kerr

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Re: RF Scans - dramatic example of Venue shielding
« Reply #5 on: April 03, 2016, 03:02:02 pm »

I would imagine cell phone repeaters would be necessary then.

To have good service, yes. That particular auditorium does have in building cell repeaters. Most hotels and convention centers probably not, you just have crappy service in the venue.

Ma
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John Sulek

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Re: RF Scans - dramatic example of Venue shielding
« Reply #6 on: April 03, 2016, 04:43:15 pm »

When you mention "venue shielding" do you mean the RF reduction due to the basic building or a venue that has a Farday cage as part of the construction?

There is the lead dome at HOB Chicago. You would not know you're in downtown Chicago from looking at an analyzer.
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Ike Zimbel

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Re: RF Scans - dramatic example of Venue shielding
« Reply #7 on: April 03, 2016, 05:00:46 pm »

There is the lead dome at HOB Chicago. You would not know you're in downtown Chicago from looking at an analyzer.

...and the Vancouver, BC, Convention Center West is shielded. I will try and post some inside / outside scans in a bit. This building was built as the host broadcast center for the Vancouver Olympics, so it wasn't a "low bid" job. Beautiful venue, actually.
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Ike
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Kevin Maxwell

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Re: RF Scans - dramatic example of Venue shielding
« Reply #8 on: April 03, 2016, 05:19:04 pm »

I was working in a TV studio many years ago that was just down the block from the World Trade Center towers. Even though the room had an attempt at shielding it was very hard to get even a few working channels of wireless mics in that room.
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Re: RF Scans - dramatic example of Venue shielding
« Reply #8 on: April 03, 2016, 05:19:04 pm »


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