Wireless microphones
UHF vs 2.4 GHz Wireless Microphones
Quick answer
A 2.4 GHz system is not a cheaper UHF system, it is a different risk profile. UHF works in 470 to 608 MHz with 300 feet of range and needs coordination; 2.4 GHz needs none but reaches about 100 feet and shares the band with every access point in your building.
Shure BLX24/SM58 Wireless Microphone System - 14-Hour Battery Life, 300 ft Range, UHF
$389.00 Specs and sizingAnalog UHF in the 470 to 608 MHz working band, 300 feet of range, up to twelve compatible systems per band and 14 hours on two AA cells.
Best for: Worship vocals and a roaming handheld in a 100 to 500 seat room
Check price on Amazon
Audio-Technica ATW-1102 Wireless Handheld Microphone System
$349.95 Specs and sizingA 2.4 GHz digital system with automatic frequency selection and three levels of diversity, with no licence question and nothing in the television band.
Best for: Churches that want nothing to do with the 600 MHz repack
Check price on AmazonThe honest framing is not cheap against expensive. It is which failure you would rather own. UHF gives you range, capacity and the ability to run a dozen channels, in spectrum that a television broadcaster owns and that the federal government has already auctioned once. The 2.4 GHz band gives you no coordination work and no legal exposure, in spectrum that your own building fills with Wi-Fi.
Every church should know exactly which bands are legal before spending anything, especially on secondhand gear. The table below is the United States position after the 600 MHz repack, and it is the single most valuable thing on this page. Then size the channel count you actually need on the wireless channel calculator.
Side by side
| Model | Price | Frequency band | Transmitter type | Microphone type | Rated range | Battery life | Polar pattern |
|---|---|---|---|---|---|---|---|
| Shure BLX24/SM58 Wireless Microphone System - 14-Hour Battery Life, 300 ft Range, UHF | $389.00 | UHF | Handheld | Dynamic | 300 ft | 14 hours | Cardioid |
| Audio-Technica ATW-1102 Wireless Handheld Microphone System | $349.95 | 2.4 GHz digital | Handheld | Dynamic | 100 ft | 7 hours | - |
Which bands are legal for church wireless in the United States
This is the table to check before buying anything, and the only one that matters when somebody offers you a used system at a good price.
Only 470 to 608 MHz is genuinely open UHF spectrum for church wireless microphones, and operating in 617 to 652 MHz or 663 to 698 MHz is illegal in the United States.
| Band | Status for a church | What it means |
|---|---|---|
| 470 to 608 MHz | Legal, the main working band | Shared with television on a secondary basis. Scan and coordinate every time |
| 608 to 614 MHz | Prohibited | Television channel 37, reserved for radio astronomy and medical telemetry |
| 614 to 616 MHz | Legal at 20 mW or less | The duplex gap. Very little room and very low power |
| 617 to 652 MHz | Illegal to operate | Sold to mobile carriers in the 600 MHz auction |
| 663 to 698 MHz | Illegal to operate | The other half of the same auction |
| 698 to 806 MHz | Prohibited since 2010 | The 700 MHz band, cleared long before the repack |
| 902 to 928 MHz | Unlicensed and legal | Shares with cordless phones and telemetry |
| 1,920 to 1,930 MHz | Unlicensed and legal | The DECT band |
| 2.4 GHz | Unlicensed and legal | Shares with every Wi-Fi access point and Bluetooth device in the building |
| 5.8 GHz | Unlicensed and legal | Less crowded than 2.4 GHz, and shorter range |
This is the United States position. Confirm that any system tunes inside 470 to 608 MHz before buying it, new or used. A transmitter that only tunes above 616 MHz cannot legally be operated here and has no resale value either.
Choose UHF for range, channel count and a building you do not control
UHF is the right answer whenever the microphone has to travel. Three hundred feet of published range covers a pastor walking to the back of the sanctuary, a handheld carried into the foyer, and an outdoor service in the car park. It also penetrates walls, bodies and a metal-framed platform set far better than 2.4 GHz does, which is why the signal survives somebody turning their back to the receiver.
Capacity is the second argument. A BLX system fits up to twelve compatible channels in a band and a digital system such as SLXD fits considerably more. If your church needs a preaching microphone, a roaming handheld, four vocals and a choir feed, UHF is the only band that holds them comfortably.
The cost is coordination, and it never goes away. Somebody must scan, assign, write down and re-check frequencies, and must ask visiting acts what they are bringing. Operating on a secondary basis also means a broadcaster has priority over you by law. That is the deal.
Choose 2.4 GHz when nobody will own the coordination job
The 2.4 GHz band is unlicensed, which means it cannot be auctioned away and there is no licence question at any church power level. The ATW-1102 at $349.95 and the headworn ATW-1101/H at $399.95 select their own frequencies and re-select when they hit interference, so the entire coordination task disappears.
That is a real answer to a real church problem. A system a volunteer cannot misconfigure, in a band nobody can take away, is often better in practice than a superior system nobody sets up correctly. The small footprint of these receivers also suits portable churches setting up in a school hall where the spectrum is different every week.
The condition is absolute: somebody must control the building Wi-Fi. If the church network sits on wide 2.4 GHz channels, or the youth room has its own router, or there are access points on the platform, those are competing with the microphones. Move the church network to 5 GHz for everything that matters and keep access points away from the stage. Range past about 100 feet is simply not available, so do not plan an overflow room feed on this band.
Sources
- FCC rules on wireless microphone operation, 47 CFR Parts 15 and 74
- Shure published BLX series specifications
- Audio-Technica published System 10 specifications
Frequently asked questions
Is 2.4 GHz wireless lower quality than UHF?
No. The 2.4 GHz systems churches buy are digital, so the audio path is 24 bit and free of the companding artefacts that analog UHF can produce. The compromises are range, which is about 100 feet rather than 300, and the fact that the band is shared with Wi-Fi. Quality is not the trade being made here.
How many 2.4 GHz microphone channels can I run at once?
Far fewer than UHF, and the number depends entirely on how busy your Wi-Fi is. Manufacturers publish figures in the region of eight systems for a clean environment, and a church with several access points on 2.4 GHz will manage fewer. If you need more than about four wireless channels, plan on UHF instead.
Do we need an FCC licence for church wireless microphones?
Most churches do not. Operation under 50 mW in the UHF band is permitted without an individual licence, and the unlicensed bands never require one. Larger operations using more than a set number of channels can hold a Part 74 licence, which brings priority protection. Our licensing page explains who qualifies and why it is rarely worth it for a single church.
What happened in the 600 MHz repack and does it still matter?
Spectrum from 617 to 698 MHz was auctioned to mobile carriers, and wireless microphones operating there had to stop. Churches that had bought equipment in that range lost it. It still matters because that gear is now circulating on the used market at tempting prices and cannot legally be operated in the United States.
Can I run UHF and 2.4 GHz systems in the same church?
Yes, and it is often the smartest plan. Put the preaching microphone and the roaming handheld on UHF where range matters, and put worship vocals that never leave the platform on 2.4 GHz. That uses each band where it is strong and cuts the UHF coordination work roughly in half.
Researched, not professional advice. This page is compiled from published manufacturer specifications, operator manuals, FCC rules, published standards and owner-review consensus, not hands-on testing. Sound system design, rigging loudspeakers overhead, and any electrical work are jobs for a qualified professional: have flown loudspeakers and their attachment points signed off by a structural engineer or a certified rigger, and have all wiring done by a licensed electrician to your local code. Wireless microphone rules change, so confirm the current FCC position before buying. As an Amazon Associate we earn from qualifying purchases.