I'm sorta ignorant about the technology behind wireless microphones, specifically the frequencies they operate at.

I have a commercial job I need to revamp, that currently employ 2 wireless microphones (that are working well) and I want to use a URC MX980/MRF350 combination for control, but I'm worried that the wireless mics might interfere.

I think they are Nady mics but I will get more info on these wireless mics and post back...but does anyone know enough about wireless mics to think there will be any issues? URC RF is 418 and 433.

Wireless mics used to operate mostly in the UHF band. Since the digital transition, most mics operate in the VHF band now. 418 and 433 are in between these frequencies have been set aside by the government for low powered, short transmission devices; such as remotes, garage door openers, etc...
I don't believe those frequencies are an option for any wireless mic systems (certainly not the big brands).

Only time I ever had a problem with wireless mikes was when the batteries were weak.

At that point they will do some very strange things (picking up CB radio signals, FM transmission, etc, etc.)...

I'd be astonished. Model number of the Nady will allow us to find the frequency to be absolutely sure.

Plan B is to replace mics, of course.

Actually, if these working mics have been in place for quite a while, Plan A is to replace them, as they probably do not work on the new frequencies and are thus illegal. Will anyone catch them if they don't replace them? Probably not.

In my experience, most wireless mics are UHF but upper frequencies have been banned, like upper 700 and 800 MHz. I Have units that operate in the 600 MHz range. Most of my peers use units that are the same or more common, a few blocks below mine.

ok I am a karaoke host and DJ so i use lots of wireless mics for that application. one USA company does a true digital mic that company sells a product that has no licence and suffers from no interference.it has has awesome reviews sounds fantastic. That is the line 6 range of digital mics..and no wireless internet , microwaves etc dont interfere with these either seriously do some research on them they are awesome..i have used the xdv70 and it sounds phenominal for the money

[Link: line6.com]

[Link: line6.com]

Here's an article that addresses what Ernie is alluding to.

[Link: cepro.com]

+1...The mics need to operate on frequencies that are FCC compliant
[Link: fcc.gov]

This phrasing never sounds comforting to me. It always sounds like someone just said "cheap crap" after saying "well, hell, we'll live with it." I work with a guy who was just awarded being the permanent sole supplier for microphones for events for a large (LARGE) auto dealership after some of the dealers' guys tried to save some money and bought a mic that was "good for the price" and totally blew chunks.


Pardon my repetition and sharpening of the point here, but every wireless mic that you have ever bought anywhere legitimate operated on FCC compliant frequencies (note the past tense there). The issue is that the FCC recently changed the frequencies, basically making every old wireless mic in the US into a piece of illegal trash.  It's up to the user to work out if they have to replace their mics to be legal; as a practical matter it's also up to them to decide if they care.  I think this rule change was an onerous thing to put upon small churches and other non-profits. Seems to me I just heard a piece of news about a government policy that more or less attacks churches, so I'm not surprised.

Ernie , I do not know ,the use of the mic , if its for speech, for singing for mic ing up something else.

when i say its phenomenal for the money i am comparing it to shure heil and Neumann mics not cheap crap. I did test this against a nady mic a UHF 10 and it blew it out of the water for vocalists as the capsules are interchangable yoiu can use the transmission and reception part but actually hacve the mic capsule from a higher spec mic ..

I have used these and i would not recommend anything that was crap.

being digital and on those frequencies its unlikely that any body or organisation in the world is going to say you cant use those... as they are doing with standard UHF VHF mics in various parts of the world not just the USA.

the proof of the pudding is in the eating..

so my advise is that if they fit the bill at least test them before making your final decision.