Good to hear you've got it sussed.

At risk of being pedantic, what frequencies are the two transmitters set to?

Comica's website says they operate on frequencies in the range 568 – 591 MHz. (Ch 30 to 33). Assuming you are UK you're going to get into hot water transmitting on those frequencies in the UK as they are reserved. You can transmit on Ch 70 licence free or Ch38 with a licence. Which will cost £80 for a year.

Whereabouts are you? If you want to borrow some Ch38 stuff I've got it to hand, and even better my licence would cover you using my stuff. I'm in West Gloucestershire UK, nearly Welsh Wales so if I can offer any assistance you're welcome

Copy of UK channel number allocations here

Ofcom. I think the worst they would do is confiscate the equipment in the event someone pointed the finger.

The microphones are in the band space of Group A TV channels. Group A is used in the Welsh Borders, Central Wales, Swansea, Herefordshire, Worcestershire, Stoke-on-Trent Area, London, East Berkshire, Hertfordshire, South Buckinghamshire, South Hampshire, East Devon, West Dorset , North Lake District, South West Scotland , Prestwick Area, Western Isles, Stornoway, Lewis, Isle of Skye and Shetland Islands.

Outside those areas it's unlikely anyone will notice or care. Inside those areas you could zap neighbours watching E4+1, E4 Extra, 5STAR, 5ACTION, Great Movies, ITV+1, STV+1, UTV+1 or Pick. But probably not if they've got a decent antenna on the roof.

I wouldn't use it even though this bad boy is mostly harmless because I'm a Radio Amateur and the bands are full of muck spewed out by rogue devices. Ofcom are hopeless unless a priority service is interfered with. But expect serious bother if aeronautical, maritime, military or any of the emergency services are disrupted!

Dave

Ofcom are becoming a lot more pro-active these days.

My other day-job involves using radio frequencies for television outside broadcasts, and this year I have twice met Ofcom with spectrum analysers patrolling sites and checking equipment. They are very nice folk – as long as you are licensed – and have been very helpful to me in finding interference from other users. I don't think Ofcom are hopeless, but they cannot monitor the whole UK all the time. A phone call might bring them looking.

The OP should apply for a licence, or return the equipment and demand a refund, since otherwise, the gear is seemingly illegal to be operated in the UK?

If you start interfering with my telly at home, (group A), I will have something to say about it !

CE asserts the item meets European standards.

FCC is the US Federal Communications Commission, and an FCC certificate means the item conforms to US emissions requirements. Industry Canada (IC) is like the FCC, and I think they issue certificates too.

Shock horror, the device isn't marked with a UKCA mark! UKCA marks aren't quite as rare as hen's teeth because I've seen one! (Only one. Are Brexiteers happy with that? Two and a half years after finally leaving the EU, we're still using CE marks. Write to your MP!)

Legal frequencies for radio microphones in the UK listed here. The channels used by Ian's microphones are listed in Orange, meaning they're available but are Short Term PMSE License Required – Date & Venue Specific. I guess Ofcom check the microphone frequencies don't interfere with TV in the area. So not illegal if you have a licence.

Channel 70, 1.9GHz and 2.4GHz don't require a licence. 1.9GHz is shared with DECT phones and 2.4GHz with Bluetooth and Wifi.

Dave

Think I'm confused too, if only because channels 8 and 11 aren't UHF, and that is part of the description. They're VHF. There is a licence free VHF frequency allocation (from memory it's 173.8 to 175 MHz which is within Ch7). I've got two separate stand alone lavalier systems on this frequency range you can have if that helps.

I'm wondering if the manufacturer isn't using the standard channel designations, but is using sub-channels within the main frequency allocation. There should be a table of operating frequencies as part of the user manual.

Failing that, I'm coming round to the "send it back to Amazon" school of thought.

Edit:  I need to check if the receivers for the two VHF systems I know I have are suitable for camera mounting

Edited By Simon Williams 3 on 22/08/2022 17:33:09

No such luck, except for the licence exempt frequencies as discussed already. IR2030 is the legalese of interfacing with equivalent (and hopefully non contradictory) requirements in the EEC.

There is no licence exemption on the basis of low power alone, only low power AND the use of specific frequencies.