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Author Topic: rf interference  (Read 1136 times)

John Luty

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rf interference
« on: December 30, 2018, 07:29:17 pm »

I'm having a problem with rf interference with my AVG  wireless mics . What if anything can I do to stop it  ?
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Jerome Malsack

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Re: rf interference
« Reply #1 on: December 30, 2018, 07:35:07 pm »

It will depend on the location your at, The frequencies being used, and did you get height for line of site along with 1/4 wave spacing on the antenna receiving. 
1/4 wave rule says you will space the antenna to prevent problems.  Receiver one needs to have about 4 to 8 inchs separating it from receiver 2.  The antenna should be the 4 to 8 inchs for a UHF frequency.  VHF is 2 to 5 feet. 
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Ryan Trefethen

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Re: rf interference
« Reply #2 on: December 30, 2018, 07:35:19 pm »

Hi John,

We’d will need to know a bit more info before we can help.

1. AVG must be AKG brand microphone
2. Model
3. Frequency range
4. Description of the problem. If you don’t know technical jargon just a laymen description of what’s happening will suffice.
5. Your location in the world (City,State, Country)
6. Environment you are in (Church, warehouse, club, theater, etc.)

Ryan


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Ryan Trefethen

John Luty

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Re: rf interference
« Reply #3 on: December 30, 2018, 07:58:57 pm »

Hi John,

We’d will need to know a bit more info before we can help.

1. AVG must be AKG brand microphone
2. Model
3. Frequency range
4. Description of the problem. If you don’t know technical jargon just a laymen description of what’s happening will suffice.
5. Your location in the world (City,State, Country)
6. Environment you are in (Church, warehouse, club, theater, etc.)

Ryan


Sent from my iPhone using Tapatalk
yes AKG WMS40 MINI2 Dual Vocal Handheld Microphone Wireless System
both freg. bands537.5 539.3 ,537.9 540.4 so 4 mics total
the problem is occasional popping
I live in western new York state  pretty rural small town pop 13000
in a small neighborhood bar
thanks for taking the time to help
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Ryan Trefethen

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Re: rf interference
« Reply #4 on: December 30, 2018, 08:18:04 pm »

Those are fixed frequency models.

Does the popping happen on all 4 at the same time? 

Popping on all of them but at different times?

Ryan


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Ryan Trefethen

John Luty

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Re: rf interference
« Reply #5 on: December 30, 2018, 09:19:19 pm »

Those are fixed frequency models.

Does the popping happen on all 4 at the same time? 

Popping on all of them but at different times?

Ryan
Can't say with 100% certainty but I think it is all of them at different times but it could just be one I will try to pay attention when I use them tomorrow night

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John Sulek

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Re: rf interference
« Reply #6 on: December 30, 2018, 10:05:34 pm »



The zip code of the venue where this is happening would enable a check of your frequencies in Wireless Workbench or IAS software.
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John Luty

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Re: rf interference
« Reply #7 on: December 30, 2018, 10:08:22 pm »

The zip code of the venue where this is happening would enable a check of your frequencies in Wireless Workbench or IAS software.
14760
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John Sulek

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Re: rf interference
« Reply #8 on: December 31, 2018, 10:39:30 am »

14760

Looks good in IAS but without an actual scan from the venue, hard to know what is happening on site.
With all your mics powered off, do the receivers show no rf level?
Then turn each mic on by itself and make sure all the other receiver channels show no rf.

When the popping happens, are the mics deployed on the stage or grouped together side stage or at FOH?

Also check for a loose mic capsule, or loose contacts in a battery compartment. Not rf related but could cause a popping noise.
« Last Edit: December 31, 2018, 11:37:29 am by John Sulek »
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Jerome Malsack

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Re: rf interference
« Reply #9 on: December 31, 2018, 10:55:26 am »

The popping possibly could be static discharge.  If the pop is when changing hands and picking it up ? 
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