Radio Licensing in Türkiye: What Licensed Professional Radio Means

Radio spectrum is a public resource, allocated rather than owned, and every country administers it. In Türkiye that authority is the BTK. For an organisation buying a radio system, this has practical consequences that arrive early and are easier to plan for than to discover.

A licence is a frequency assignment. The BTK allocates specific frequencies to a named organisation for named locations and defined equipment. Three things follow from that, and only from that.

Exclusivity in the area. Your assigned frequency is not simultaneously assigned to someone else nearby. On an unlicensed or shared band you have no such protection: whoever else is using the frequency is using it, and the only remedy is to talk over each other.

Repeaters. Extending coverage with a repeater requires a coordinated frequency pair — one to receive, one to transmit — with defined separation. That coordination is the licence. Without it there is no lawful repeater, and without a repeater there is no wide-area coverage.

Useful power. Licence-free bands cap output at levels intended to keep them local. Professional equipment at 4 to 5 watts on a handset, or 25 to 50 on a vehicle mobile, operates under an assignment.

Everything an organisation typically wants from radio — coverage across a site, separate talkgroups, conversations that stay inside the company — depends on one of those three.

PMR446 devices are legitimate and useful within their limits: low power, integral antenna, no repeater, a shared band open to anyone. A shop floor, a small restaurant, a two-person workshop, a market stall — these are the cases where licence-free is not a compromise but the correct answer.

The ceiling arrives fast and it arrives structurally, not gradually. You cannot fix a coverage problem on a licence-free system by adding a repeater or a better antenna, because those are precisely what the exemption excludes. When the operation outgrows the band the only path is a licensed system, and every device bought so far may be unusable on it.

That is the decision worth making deliberately: not "how many radios", but "will this operation still fit inside licence-free limits in three years".

The pattern that costs projects time is always the same. Equipment is ordered, delivered and sits in a store room while the assignment is coordinated, because licensing was treated as paperwork rather than as a lead item.

Coordination has to establish that a requested frequency does not conflict with existing assignments in the same geography. In dense industrial areas and large cities that takes longer, and the outcome is not guaranteed to be the frequency first requested. A duplexer tuned before the assignment is confirmed may have to be retuned; handsets programmed in advance may have to be reprogrammed.

The sequence that works: define the requirement, apply, receive the assignment, then tune and programme. In a tender, name the party responsible for licensing explicitly — this is one of the most common gaps in radio specifications, and it produces a delivered system that legally cannot be switched on.

DMR's two-slot TDMA carries two conversations in the 12.5 kHz that analogue spends on one. For a licensing process that means a given capacity requires half the spectrum — an operation needing two simultaneous conversations applies for one pair instead of two.

Where spectrum is congested, that is not a minor efficiency. It can be the difference between an assignment being available and not.

Digital also supplies what an assignment cannot: encryption, so a licensed frequency is private as well as exclusive; user identification, so the system knows who transmitted; and remote disable of a lost handset, which matters more when the device is a credential to your network.

Some organisations run professional-band equipment without an assignment, usually without realising it — equipment bought second-hand and already programmed, or a supplier who never raised the subject.

The legal exposure is real: unauthorised transmission is an offence and equipment is subject to seizure. The operational exposure is more likely to bite first. An informal frequency is not yours. When it is properly assigned to another organisation and they commission their system, yours becomes unusable overnight, with no notice and no path to complaint. Diagnosing that from the inside is miserable, because everything about your equipment still tests correct.

This is also the main reason to be careful with used equipment: a working radio programmed to somebody else's assigned frequency is not a bargain, it is a liability.

The assignment process wants a described system, not a shopping list:

• Locations — sites by address, and whether coverage is required beyond their boundaries.
• Equipment classes and counts — handsets, vehicle mobiles, fixed base stations, repeaters.
• Power levels and antenna details for fixed installations, including height.
• Whether a repeater is involved, which determines pair versus single channel.
• Technology — analogue or digital, and the channel bandwidth.

Most of this comes out of the coverage design, which is another reason the survey belongs before the purchase rather than after it.

Licence-free radio is correct for small, static, local operations and has a hard ceiling. Licensed radio is what makes coverage, capacity and privacy possible, and its cost is a coordination process that takes real time.

Plan the licence as a project dependency with a date, assign it to a named party in the contract, and do not tune hardware or programme fleets against a frequency that has not been granted. Everything else about a radio project can be recovered from; a system that cannot lawfully transmit cannot.