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700 MHz wireless question

embellisher

embellisher

Holy Ghost filled Bass Player
Supporting Member
Apr 18, 2000
22,086
8,729
Heber Springs, Arkansas
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#1
My church has recently purchased several wireless microphones as well as a couple of wireless guitar systems.

I need to find out how to determine what frequencies are affected by the 700MHz spectrum sale.

One of our guitar units is VHF. I am pretty sure that unit will be fine. Amazingly enough, it works pretty well for a VHF wireless. Good range, decent sound, no dropouts. My guitarist is using this one.

I am using a Shure UT14 Guitarist unit. I am almost positive this is in the 700MHz range. This wireless works great and sounds great.

I need to find out what happens when these frequencies begin to be used in my area. Do the 700MHz devices stop working, or what?

Any info on this would be greatly appreciated.

Thanks!
 
#3
Hi.

One problem with "restricted" bands is that if someone experiences interference on a band that they have the "exclusive rights" to use, they try to hunt the interfering devices down. If (/when) they find the illegal transmitter, the party responsible for the use of that device is dealt with according to the local telecommunications laws. My VHF unit falls directly into that category. Won't even say what bands I use ;).

The more common problem is that the reciever unit picks up interference from the other users of that said band, and that either raises the noise/static level or just picks up the stronger, whatever, signal.

The first scenario is rare as the transmitter output levels are usually less than 1W so the effective operation (interfering) range is really limited. Usually up to 50 meter radius if any fidelity is required.

You just have to wait and see, the determening factor will be the usage of that said band and how crowded it is.

Regards
Sam
 
#4
There was an interesting article on it at sweetwater.com. Basically it's not a big emergency right now but should be in the next few months. And according to them, only Shure and Sennheiser units are affected, and Shure has an upgrade program that'll save you a little money on a new wireless that doesn't work in the 700 range. Wish I could find the link but I'm exhausted and cranky and about to go to bed :crying:
 
#6
JimmyM said:
There was an interesting article on it at sweetwater.com. Basically it's not a big emergency right now but should be in the next few months. And according to them, only Shure and Sennheiser units are affected, and Shure has an upgrade program that'll save you a little money on a new wireless that doesn't work in the 700 range. Wish I could find the link but I'm exhausted and cranky and about to go to bed :crying:
Click to expand...

Here is the link to the article the Mitch Gallagher wrote on the topic:
http://www.sweetwater.com/feature/wireless/white-spaces.php

I am aware of rebate programs by both Shure and Sennheiser. Regardless of the brand, the frequency issue remains the same. If you have wireless between 698 and 806MHz, and it is not a Shure or Sennheiser product, don't think you are immune. The new FCC regulations apply to any and all brands of wireless microphone for use by the general public.

Dan
 

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