PMR446 radio FAQs

PMR446 is a short-range radio service in the 446 MHz band. Handheld radios communicate directly on a shared channel, so they do not need a mobile network or internet connection. The radios must be compatible and set to the same channel and, if used, the same CTCSS/DCS code. UK use is licence-exempt only when the equipment and operation meet Ofcom's conditions.

You do not need an individual radio licence when using equipment that meets the UK PMR446 requirements and operating it within those conditions. A radio that can tune to 446 MHz is not automatically compliant. Check Ofcom's PMR446 guidance and the exact model documentation.

Usually, compatible analogue PMR446 sets can communicate when they use the same channel and compatible squelch settings. If one radio uses a CTCSS or DCS code, the other must match it or have the code turned off. Digital radios also need a compatible digital mode and settings. Analogue and digital voice are not directly interchangeable.

Yes, CB radio remains a UK service and some people use it for hobby and practical communications. Activity varies by place and time. CB uses different frequencies and equipment from PMR446, so the two types of radio cannot talk directly. Ofcom's CB radio guidance explains the UK conditions.

Channel choice is local and changes over time. Some UK users arrange informal calls on channels such as 6 or 8, but neither is nationally reserved by Ofcom. Listen first, follow a local group's published plan and move if the channel is busy. The PMRMap channel guide lists analogue frequencies.

On the UK analogue plan, Channel 6 is 446.06875 MHz and Channel 8 is 446.09375 MHz. These are ordinary shared channels, not private or protected frequencies. See the full 16-channel chart.

There is no nationally designated Ofcom Sunday net or reserved Channel 8 schedule. Local groups may arrange their own Sunday or evening calls. Check the local nets directory, confirm details with the organiser and listen before joining.

A channel selects the radio frequency. CTCSS and DCS are optional receiver filters that can keep other calls from opening your speaker. They do not create a separate frequency, encrypt speech or stop other users hearing you.

Try a safe open position, reduce the number of walls or hills between radios, hold the handset upright and keep its built-in antenna clear. Check the battery and make sure both sets use the same channel and code. Do not add an antenna, boost the power or use a repeater to extend a PMR446 link.

There is no single guaranteed distance. Buildings, terrain, radio position, interference and equipment all affect the result. Manufacturer maximum figures are ideal-case claims, not promises for your area. Test from the places where you plan to use the radios. See how PMR446 range works.

Open ground with a clearer path to the other radio often helps. A window or upper floor can help indoors, while hills, metal structures, thick walls and a car body can reduce reception. Choose a safe place; never climb onto a roof or use a radio in a way that distracts a driver.

Monitor or open squelch can play weaker or noisy signals through the speaker. It changes reception, not transmit power. Hearing a distant signal does not guarantee a two-way contact or make higher power, an external antenna or a repeater legal under PMR446.

No. PMR446 is shared radio and compatible receivers in range may hear a transmission. CTCSS/DCS codes are filters, not encryption. Avoid sharing passwords, addresses, access codes or sensitive personal details over the air.

A compliant handheld may be used while stationary, but the metal body of a vehicle can weaken the signal. Do not handle or operate a radio in a way that distracts a driver. PMR446 equipment must remain hand-portable; it is not a vehicle-mounted base radio service.

Search for a town or area on the PMRMap radio map, then check listed channels, groups and net times. Listings are community-submitted and may not reflect live activity. Use a broad locality rather than sharing a home address.

Invite interested people, agree a channel after listening locally, choose a check-in time and write down a back-up plan. Keep calls short and explain that radio traffic is open to others. See how to start a neighbourhood network.

A local group can agree to pass simple messages if both radios are powered, tuned alike and within range. But PMR446 is not monitored by emergency services, range is not guaranteed and other people can hear calls. In immediate danger, contact 999 or 112 where possible and follow official instructions.

A battery-powered handheld can work without mains power, mobile data or Wi-Fi, as long as the battery is charged and the other radio is also available and in range. Agree a channel and check-in time before a cut; do not rely on the radio as your only emergency plan.

Only if the radio supports charging from a compatible USB supply. Some models charge directly by USB; others need a cradle or separate charger. Check the manual, voltage and cable before connecting a power bank. A USB port may not be a charging input on every radio.

Some models support standard AA cells, while others need a specific rechargeable pack. Follow the manual and do not mix cell types, chemistries or old and new batteries unless the manufacturer allows it.

Analogue and digital PMR446 use the same broad service band but encode voice differently. Analogue radios generally cannot understand a digital voice transmission. Digital sets must use compatible modes and channel settings. The equipment must still comply with the UK PMR446 rules.

No. DMR is a digital radio standard, not proof that a radio meets PMR446 licence-exempt conditions. A programmable professional radio may have different power, antenna or operating characteristics. Check the exact model's UK compliance and Ofcom's current IR 2030 before transmitting.

No. They can filter what your speaker plays, but they do not encrypt a transmission or stop other users hearing it. Anyone with a suitable receiver on the channel may hear you.

Check that both radios use the same channel, that transmit is not locked out by a busy-channel feature, and that each has a charged battery. Compare CTCSS/DCS settings and the radio modes. Move to a safe open position and try a brief test again.

You may be near the edge of reception, behind an obstruction, hearing interference or using mismatched radio settings. Move to a clearer location, hold the radio upright, check the battery and listen on a clear channel. No adjustment can guarantee reception everywhere.