Back around Thanksgiving I helped our church identify and install a new video streaming setup... and became the de-facto operator of the system. Part of this also apparently included taking over the sound system as well.

It's actually quite a nice setup, the main board is a Mackie DL1608 that we can control either by computer and there are a number of wireless and wired microphones. It's with the latter that I've found a problem.

While remoted into the system I discovered that 4 of the longest wire-runs are somehow picking up a local radio station. I am able to mute them as they aren't currently used but need to figure out a way to get them back in service. The runs are roughly 90 - 100 feet each and I don't know what kind of wiring was used for them.

Does anyone have any suggestions or ideas on filtering out the signal?

Thanks!
Hatton

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Re: Church Sound Board Picking up Radio
By: Hatton to All on Sun Feb 28 2021 06:39 pm

Back around Thanksgiving I helped our church identify and install a new video streaming setup... and became the de-facto operator of the system. Part of this also apparently included taking over the sound system as well.

It's actually quite a nice setup, the main board is a Mackie DL1608 that we can control either by computer and there are a number of wireless and wired microphones. It's with the latter that I've found a problem.

While remoted into the system I discovered that 4 of the longest wire-runs are somehow picking up a local radio station. I am able to mute them as they aren't currently used but need to figure out a way to get them back in service. The runs are roughly 90 - 100 feet each and I don't know what kind of wiring was used for them.

Does anyone have any suggestions or ideas on filtering out the signal?

You're using balanced XLR mic cables? https://www.prosoundweb.com/in-the-studio-preventing-hum-and-rfi/
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Hatton wrote to All <=-

Back around Thanksgiving I helped our church identify and install a new video streaming setup... and became the de-facto operator of the
system. Part of this also apparently included taking over the sound system as well.

It's actually quite a nice setup, the main board is a Mackie DL1608
that we can control either by computer and there are a number of
wireless and wired microphones. It's with the latter that I've found a problem.

While remoted into the system I discovered that 4 of the longest
wire-runs are somehow picking up a local radio station. I am able to
mute them as they aren't currently used but need to figure out a way to get them back in service. The runs are roughly 90 - 100 feet each and I don't know what kind of wiring was used for them.

Does anyone have any suggestions or ideas on filtering out the signal?

Interesting!

In HAM Radio, sometimes wires will pick up a hum, and a ferrite band
will usually fix it. It's the same thing you use to 'filter' a phone line
that is used for DSL modems, so you might have one around to try...

I googled it - also called a Ferrite Choke - here's a link to what I'm referring to...

https://www.amazon.com/VSKEY-Anti-Interference-Telephones-Equipment-Appliances/dp/B078XKHLKG/ref=asc_df_B078XKHLKG/?tag=hyprod-20&linkCode=df0&hvadid=312039478953&hvpos=&hvnetw=g&hvrand=4902472137321900813&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9013482&hvtargid=pla-567906389220&psc=1






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Re: Church Sound Board Picking up Radio
By: Hatton to All on Sun Feb 28 2021 18:39:01


Hatton> Does anyone have any suggestions or ideas on filtering out the signal?

making sure the ground/shield on the cables is right is the first thought i have... if it isn't, all kinds of signals can bleed in...


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Hatton> Does anyone have any suggestions or ideas on filtering out the signal?

Thanks for all the responses!

DM / Rampage: I know the runs are XLR cables but am unsure beyond that; I'll have to do some more research. Definitely worth digging up a floor plate and pulling the plug off the board to check.

Jimmy: I believe I have a pack of ferrites laying around, I'll see bring those when I take the screwdriver!

Thanks again!

Hatton

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Re: Church Sound Board Picking up Radio
By: Hatton to Rampage on Mon Mar 01 2021 15:28:13

I'm having a similar problem with the PC Speakers hooked to my BBS Server. It's a faint background sound (just enough to be annoying) And I have no control over the volume of it. I can turn the speaker volume up and down and the volume of the music never changes.
-+-

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Sound Source ]|[ - telnet: furmenservices.net:2323



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HATTON wrote to RAMPAGE <=-

Hatton> Does anyone have any suggestions or ideas on filtering out the signal?

Thanks for all the responses!

DM / Rampage: I know the runs are XLR cables but am unsure beyond that; I'll have to do some more research. Definitely worth digging up a
floor plate and pulling the plug off the board to check.

Jimmy: I believe I have a pack of ferrites laying around, I'll see
bring those when I take the screwdriver!

Let us know how it goes! Now we're all invested. :-)




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Re: Church Sound Board Pickin
By: JIMMY ANDERSON to HATTON on Tue Mar 02 2021 10:55 am

Hatton> Does anyone have any suggestions or ideas on filtering out
the signal?

DM / Rampage: I know the runs are XLR cables but am unsure beyond
that; I'll have to do some more research. Definitely worth digging
up a floor plate and pulling the plug off the board to check.

Let us know how it goes! Now we're all invested. :-)

Picking this thread back up as I was finally able to get into the building and do some testing.

Note, this is just for the "worst offender" line. I believe I've isolated the issue to somewhere in the line between the microphone and the XLR jack. I finally got to where the jack is and unplugged the mic and there is no excess audio.

Looking at the line, it's super thin and there's a section where the rubber/sheath is gone so the ground wire looks exposed. It was also coiled up and zip-tied. Spreading the cable out made no change so now I'm going to need to go back and test with the ferite.

At least I don't have to go chase the wire from the box to the board... at least I hope I don't.

Hatton

... Advertising is the rattling of a stick inside a swill bucket.

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■ Synchronet ■ Three Corners and Beyond! http://3corners.us

Back around Thanksgiving I helped our church identify and install a new video streaming setup... and became the de-facto operator of the system. Part of this also apparently included taking over the sound system as well.

It's actually quite a nice setup, the main board is a Mackie DL1608 that we can control either by computer and there are a number of wireless and wired microphones. It's with the latter that I've found a problem.

While remoted into the system I discovered that 4 of the longest wire-runs are somehow picking up a local radio station. I am able to mute them as they aren't currently used but need to figure out a way to get them back in service. The runs are roughly 90 - 100 feet each and I don't know what kind of wiring was used for them.

Does anyone have any suggestions or ideas on filtering out the signal?

Thanks!
Hatton

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� Synchronet � Three Corners and Beyond! http://3corners.us

I remember using my sister’s record player in the basement of our house in the olden days and got radio playing through it. Radio frequencies always interfering with something else.

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