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Author Topic: Crazy RF event last night...insight appreciated.  (Read 1454 times)

John Daniluk (JD)

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Re: Crazy RF event last night...insight appreciated.
« Reply #20 on: May 09, 2018, 07:04:51 am »

Had a show where everything was clear...show was to start wireless failed.....venue switched on their wireless intercom system.    Had to hold show and  reassign our freq.


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Henry Cohen

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Re: Crazy RF event last night...insight appreciated.
« Reply #21 on: May 09, 2018, 01:07:37 pm »

It should be noted however that the RF power you utilize should be set accordingly for the distance between the mic and the receiver. The goal is to use the lowest amount of RF power possible for any given distance.

Along with coax, passive splitter and filter losses, and RF noise floor.


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If you were within 50' of the receiver, you could have been cooking the antenna's.

Only if they are active antennas, which should almost never be used.


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There is some math involved, but typically anything between 50' - 100' only needs about 10mw of RF power. After that, you can start cranking it up if you are noticing weak signals.

Again, one needs to also account for RF noise floor and losses due to coax, and inline passives.

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Henry Cohen

CP Communications    www.cpcomms.com
Radio Active Designs   www.radioactiverf.com

Henry Cohen

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Re: Crazy RF event last night...insight appreciated.
« Reply #22 on: May 09, 2018, 01:09:19 pm »

Had a show where everything was clear...show was to start wireless failed.....venue switched on their wireless intercom system.    Had to hold show and  reassign our freq.

Factoring in house (venue) RF operations is an integral part of RF coordination for the show.
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Henry Cohen

CP Communications    www.cpcomms.com
Radio Active Designs   www.radioactiverf.com

Don Boomer

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Re: Crazy RF event last night...insight appreciated.
« Reply #23 on: May 09, 2018, 08:22:30 pm »


Only if they are active antennas, which should almost never be used.


Thank you!  Itís amazing how many people think they are helping their systems when in fact they are making them worse.
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Don Boomer
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Tim McCulloch

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Re: Crazy RF event last night...insight appreciated.
« Reply #24 on: May 12, 2018, 02:00:41 am »

Thank you!  Itís amazing how many people think they are helping their systems when in fact they are making them worse.

Don, you've been in the audio trench, too, and have seen plenty of needless additional gain used at AF freqs.  Just saying that bad habit carry over seems inevitable...
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