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Author Topic: Need Help / Suggestions For IEM RF Issues  (Read 32422 times)

Terry Martin

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Re: Need Help / Suggestions For IEM RF Issues
« Reply #100 on: May 03, 2018, 04:12:33 PM »

I DO just want someone to tell me how to make it work, noise free!  :-). .. just kidding, kind of.

The sad thing is that when I started using wireless IEMs 8-10 years ago, I barely knew how to turn the units on.  I took no effort to coordinate nor worry about noise.  ...and we had no issues. 

Move forward to about 1.5 years ago, I swapped out my A&H Mix Wiz to an X32 and started having noise issues immediatel.  (Almost) an overnight change in quality of performance.  (Maybe 2 weeks time, really)

I focused so much on the X32 as it was the only change point.  Moved it in the rack away from other gear, put it in the rack where the mix wiz lived, took it completely out of the rack, I replaced 2 IEM units (in diff freq band) with new units, and bought a new combiner - none of these solved the issue.  Move forward to today, and I’m using RF Explorer and Wireless Workbench (which I’d never thought I’d need).  I’ve come a long way in a short amount of time, certainly I’m no expert.  I posted my process above - am I missing any critical steps?

I appreciate ALL of you guys chiming in - I’ve learned something from each of your posts.  I feel like I’m letting my band down when their getting noise/zaps.  Some of it is low level - but some has been bad enough to be slightly painful.  And it comes out of no where it seems. 

You're not wrong, but...  :)  [and this message isn't really for you, Andy, as i'm not going to say anything you don't already know]

I do agree that Helicals are wonderful [and have come down to a reasonable level cost wise as well].  But there are times when a wider angle works to your advantage.  And there are times when an omni works to your advantage. 

The important thing is to know what you're trying to accomplish and then have a strong enough working knowledge of the tools available to you to make a proper decision regarding which tool you should deploy and when.  I think the most pervasive problem i see with people trying to deploy RF is their desire for someone to tell them the ONE solution that will just ALWAYS work, rather than taking the time to understand all the variables so that they can get the best results in every situation.



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Terry Martin

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Re: Need Help / Suggestions For IEM RF Issues
« Reply #101 on: May 03, 2018, 04:25:17 PM »

So 6mhz is the magic number to ID TV stations?

Quote from: Jordan Wolf link=topic=162475.msg1542628#msg1542628

I say manually check off the TV stations that are showing up in the scan. The FCC database isn’t always up-to-date, and with the spectrum repack, stations are moving to new freqs. very quickly, which won’t be reflected in the database immediately.

When a 6MHz chunk of spectrum is taken up, check it off and exclude it from the coordination.





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John Sulek

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Re: Need Help / Suggestions For IEM RF Issues
« Reply #102 on: May 03, 2018, 06:55:04 PM »

So 6mhz is the magic number to ID TV stations?



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Anything 6Mhz wide and square wavish is a DTV station. Try not to put your frequencies right next to it if it's close by (stronger signal on your rf explorer).
 
Here's an example. The yellow areas are DTV stations with the recognizable shape.
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Ike Zimbel

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Re: Need Help / Suggestions For IEM RF Issues
« Reply #103 on: May 03, 2018, 10:14:54 PM »

You're not wrong, but...  :)  [and this message isn't really for you, Andy, as i'm not going to say anything you don't already know]

I do agree that Helicals are wonderful [and have come down to a reasonable level cost wise as well].  But there are times when a wider angle works to your advantage.  And there are times when an omni works to your advantage. 

The important thing is to know what you're trying to accomplish and then have a strong enough working knowledge of the tools available to you to make a proper decision regarding which tool you should deploy and when.  I think the most pervasive problem i see with people trying to deploy RF is their desire for someone to tell them the ONE solution that will just ALWAYS work, rather than taking the time to understand all the variables so that they can get the best results in every situation.
This!
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~Ike Zimbel~
Wireless frequency coordination specialist and educator.
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Radio Active Designs
Pro Audio equipment repair and upgrades.
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Re: Need Help / Suggestions For IEM RF Issues
« Reply #103 on: May 03, 2018, 10:14:54 PM »


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