Schools have a communication problem that's easy to underestimate. Most of the day it's routine — a message to the office, a question about a bus. But the reason schools buy radios is the other scenario, the one where seconds matter and cell phones aren't fast enough.
This guide covers which Motorola radios suit K-12 schools, what they cost, and what to think about beyond coverage.
Quick answer
- Small school, tight budget: Motorola CLS Series — from $197
- Most schools: Motorola CURVE — $299, no FCC license required
- Larger buildings, long days: Motorola DTR700 — $472, 17-hour battery, no license
- Multiple buildings or bus coordination: Motorola TLK Series — cellular, no range limit
Why license-free radios suit schools
Most business radios require an FCC Part 90 license — an application, a ten-year term, and a renewal someone has to remember. For a school district with limited administrative capacity, that's another compliance item that can lapse quietly.
The CURVE and DTR700 run on the 900 MHz ISM band and need no license at all. No application, no renewal, nothing to track. For many schools that alone decides it.
They're also digital, which means conversations aren't picked up by anyone scanning common frequencies nearby — relevant when staff are discussing students.
Comparing the options
| Model | Coverage | Channels | Technology | Battery | FCC license | Price |
|---|---|---|---|---|---|---|
| CLS Series | 200,000 sq ft | 1–4 | Analog | 12 hrs | Required | $197–$219 |
| CURVE | 300,000 sq ft | 10 | Digital 900 MHz | 14 hrs | None | $299 |
| DTR700 | 350,000 sq ft | 50 | Digital 900 MHz | 17 hrs | None | $472 |
| CP100d | 350,000 sq ft | 16–160 | Analog or Digital | 14 hrs | Required | $277–$545 |
| TLK Series | Nationwide (cellular) | Talkgroups | LTE / Wi-Fi | Varies | None | $240–$400 |
Coverage figures are manufacturer maximums. Concrete block construction, fire doors and stairwells reduce real-world range.
Which one, and why
CLS Series — the budget option
The CLS Series is light, simple and inexpensive. The CLS1110 is single-channel; the CLS1410 gives four, which matters if you want office, custodial and administration separated.
Choose it if: budget is the deciding factor and the building is modest. Note: it does need an FCC license, unlike the CURVE.
CURVE — the one most schools should buy
The CURVE covers 300,000 sq ft, runs 14 hours, offers 10 channels, and needs no license. At $299 it's modestly more than the CLS and removes an administrative burden entirely.
Choose it if: you want good coverage with the least ongoing hassle. This suits most single-building schools.
DTR700 — bigger buildings, longer days
The DTR700 adds coverage, 50 channels and a 17-hour battery that comfortably covers an extended day with after-school activities and evening events.
Choose it if: your building is large, or radios are in use from early arrival through evening events.
TLK Series — across buildings and buses
Conventional radios have a range limit. If you're coordinating between buildings on a campus, or with buses once they've left, TLK radios run over cellular instead — no range limit, no license.
The TLK150 is the in-vehicle model for buses.
Choose it if: your need extends past one building. Note: requires a subscription.
How many radios, and who carries one?
Typically:
- Principal and assistant principal
- Main office / front desk
- School resource officer or security
- Custodial lead
- Nurse
- Cafeteria and recess supervision
- Athletics or after-school lead
- Bus or arrival/dismissal coordinator
That's usually 8–12 for a single-building school, plus spares. Consider whether every classroom teacher needs one — most schools find they don't, provided supervision staff and administration are covered.
Channels: keep routine traffic off the emergency channel
The important one. If custodial, cafeteria and office all share a channel with administration, the channel is busy exactly when you need it clear.
Plan at minimum:
- Administration / emergency
- Custodial & maintenance
- Supervision — cafeteria, recess, arrival and dismissal
- Athletics / after-school
The CLS1110 has one channel and the CLS1410 four. The CURVE offers 10 and the DTR700 50 — worth the headroom.
Accessories
- Surveillance earpieces — keeps radio traffic out of classrooms and away from students
- Remote speaker microphones — for custodial and outdoor supervision
- Belt clips and holsters — radios get dropped during an active day
- Multi-unit chargers — one station in the office, charged overnight, collected each morning
Frequently asked questions
What is the best two-way radio for a school?
For most single-building schools, the Motorola CURVE at $299 — 300,000 sq ft of coverage, 10 channels, a 14-hour battery, and no FCC license required. Larger buildings or longer days suit the DTR700 at $472 with its 17-hour battery.
Do schools need an FCC license for two-way radios?
Not necessarily. UHF radios like the CLS Series and CP100d do require an FCC Part 90 license. But 900 MHz radios such as the CURVE and DTR700 need no individual license at all, which is why many schools choose them.
How many two-way radios does a school need?
A single-building school typically needs 8–12 — administration, front office, security, custodial, nurse, cafeteria and recess supervision, athletics, and arrival/dismissal — plus two spares. Most schools find classroom teachers don't need individual radios if supervision staff are covered.
Can staff use radios discreetly around students?
Yes, with a surveillance earpiece. Audio goes directly to the wearer's ear, so radio traffic isn't broadcast into classrooms or corridors. Most schools treat earpieces as standard rather than optional.
Can two-way radios reach school buses?
Not conventional ones — they have a fixed range and buses leave it quickly. TLK radios communicate over cellular networks instead, so there's no range limit. The TLK150 is the in-vehicle model designed for exactly this.
Need a recommendation for your school?
Tell us your building size, how many staff need radios, and whether you're coordinating buses or multiple buildings — we'll recommend a setup and quote it.
Get a recommendation or call (312) 492-4645.
