Some webcams run at 32000, a cheaper wireless mic may well use compressed streaming as well. Even if it does not, it will suffer interference from other wireless products including wireless mouse, cell phones, microwave links, other wireless mics, etc. These products are made for gaming (one mic in the area at a time) not serious audio production. Wired mics are not expensive. Even the cheapest multi-input audio device may be more than you want to pay but worth it in my opinion.
Sorry not necessarily the case for the UHF frequency range, but your point is good. Cell phone transmissions are still an issue, particularly GSM technology, but wireless mice, microwave links etc. tend to be far enough outside of the frequency range to not be an issue.
Now given that this is UHF, it does bring up a good question that I had assumed, but realized I shouldnāt assume.
@graylion Have you done any RF coordination to ensure that:
- You are not using the frequency of an active TV broadcast in your area
- That the frequencies you are using for your wireless mics are not causing an intermod issue
If you donāt know either of these, I would honestly suggest you run from these mics. UHF broadcasts are capable if you know what you are doing, but you are going to start scratching the surface of a technical world here. And one of the first things in the US is that you are a Part15 unlicensed user (Supposedly, assuming these mics are even licensed as Part15 devices) and must accept any interference and get out of the way of any licensed broadcast.
SeabladeFunnily enough I am not in the USA. Terrestrial analog TV has been switched off and GSM is not an issue in my area.
In digital audio context it could mean that when a sample is needed there is either no valid data, or previously valid data is replayed, with the result being anything from slight ātickā noise to very loud popping. The experimental feature you are using with Ardour ALSA backend uses appropriate re-sampling software to get all of the data back into a single clock domain, but it adds latency and takes extra processing power. For a few voices probably not a big deal, but not something recommended in general for music recording use.
That could possibly be different microphones interfering with each other. There has to be some way to set the transmit frequency, I see from the picture on the sales link you posted that there seems to be a button or some mechanism on the transmitter to set frequency. I donāt see the equivalent way to set the frequency on the receiver. Presumably there is some way, but any radio device will have a limited ability to reject channels that are close to the channel (frequency) in use. Spreading the frequencies used for each microphone farther apart could possibly help if that is indeed the problem.
all microphones are operating on different frequencies, yes, we made sure of that 
But Iāll have a look at the frequency spread. We also made sure not to use neighbouring ones.
Oh lso probably important. This is not happening consistently. I thought it might be distance between transmitter and receiver, but we also had bad issues when we were really close.
Even though you arenāt in the US, that means you could be even more restricted in what you can do, depending on where you are. Sadly I canāt assist you with legal issues in your area, but you still need to confirm there are not existing co-frequency transmissions in the UHF band, which there are in many places in the world. Also Intermod can be a problem still just between your own mics, even if they arenāt on the same frequency, so beware of 3rd order at least. This also doesnāt look at things like desense, if a transmitter is to close to a receiver, etc.
Seablade
This is Ireland, nobody gets officious about anything. I looked up the frequency plan after your post, the frequencies are reserved for GSM - which is history around here. And nobody drives around with a frequency scanner to check whether somebody misbehaves.
I just had a further read, 863 to 865 is reserved for these purposes and low wattage wireless mics are licence free.
Desense bears looking into. I had them all directly in the same hub.
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