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Used radios are worth buying when the band matches your licence, the battery is costed separately, the seal has not been broken by a previous repair, and the device is not programmed to someone else's assigned frequency. Each of those is checkable before money changes hands.
Used radios circulate for good reasons — fleets get replaced, projects end, organisations change technology. A well-chosen used device can be genuinely economical. A poorly chosen one is unusable, and sometimes unusable in ways that are not visible until after installation.
The checks below are ordered so that the ones that eliminate a purchase come first.
Check this before anything else, because nothing else matters if it is wrong.
Radios are manufactured for a band split — commonly 136–174 MHz for VHF, and something like 350–400 or 400–470 MHz for UHF. A radio built for one split cannot be tuned into another; the RF hardware is different.
If your organisation holds an assignment at 450 MHz and the radios on offer are 380 MHz devices, they are scrap for your purposes regardless of condition. Ask for the band split from the model designation or the label, and verify against your licence.
A used radio arrives programmed. Very often it is programmed to the previous owner's assigned frequencies.
Using it as delivered means transmitting on somebody else's assignment, which is unlawful and, when they notice, disruptive to both parties. The radio must be reprogrammed to your own licensed frequencies before use — which means you need programming software, a cable and someone who knows the channel plan.
Establish that before purchase. A bargain that cannot be reprogrammed because the software is unobtainable for that model is not a bargain.
The single most common disappointment. Lithium-ion packs lose capacity with cycles and calendar age, and the decline is invisible until the radio dies mid-shift.
Ask the pack's age and cycle history. If the seller cannot answer, assume replacement is required and add it to the price — for many models the battery is a substantial fraction of a used device's cost, which frequently changes the comparison against new.
Test what you can: a full charge followed by a realistic duty cycle over a shift tells you far more than a voltage reading.
The case tells you about the last drop, not about the last three years.
Look for: corrosion on the battery contacts and the accessory connector, a worn or sticky PTT button, damaged antenna threads, a cracked or delaminated display, wear on the belt clip mount, and any sign that the radio has been opened.
That last one matters more than it looks. IP rating depends on gaskets. A radio opened for repair and reassembled without proper attention to seals is no longer sealed, and the failure that follows arrives months later in the first wet or dusty week.
Connectors, battery form factors and charger contacts are proprietary and vary between model families from the same manufacturer.
Confirm that your existing speaker microphones, headsets, chargers and spare batteries fit — or budget for new ones. A cheap fleet of radios that needs a complete new accessory inventory is not cheap.
If the used radios are joining an existing system, matching the model is the safest outcome. Where they are a different model or a different brand, the questions from mixing brands apply: basic voice usually works if parameters match; encryption, data and management features generally do not.
Test on your own system before committing to a quantity. Two units on trial for a week is cheap insurance against fifty that cannot do what the fleet does.
Check the firmware version and whether updates are still issued for the model. A device that has left support cannot be patched, and its programming software may not run on current operating systems.
Ask where it would be repaired. Devices well past end of life have limited parts availability, and a fleet of them becomes unmaintainable at exactly the point where age makes maintenance necessary.
Ask for: the model and band designation, the original purchase or import documentation if available, service history, the current codeplug if the seller will provide it, and any certification documents where relevant.
For hazardous-area equipment this is not optional. An ATEX device without its certification documents, or one repaired outside an authorised process, is not a certified device whatever the label says — and using it in a classified zone is a compliance breach.
Reasonable: expanding an existing fleet with the same model, where the band matches and programming is straightforward. Spare devices held against failures. Temporary or short-term projects. Low-stakes indoor use with spares on the shelf.
Not reasonable: anything with a safety function, hazardous-area equipment without documentation, a first system for an organisation with no in-house capability, or a fleet large enough that the absence of warranty and service becomes a structural risk.
The arithmetic that decides it is not the purchase price. It is the purchase price plus a probable battery, plus programming, plus the expected failure rate over three years with no warranty behind it — set against a new device with a warranty, a known battery and a service route. Often the used option still wins. Often enough it does not, and the calculation is worth doing rather than assuming.
Buying a device whose band does not match your assigned frequency. Radios are built for a band split — a 400–470 MHz radio cannot be retuned to 350–400 MHz — and a device outside your assignment is unusable no matter how good its condition. Check the band before anything else.
Assume it needs replacing and cost it in. Lithium-ion capacity falls with cycles and age, and a pack that has been in daily service for three years will not hold a shift. If the seller cannot state the pack's age, treat the radio price as the radio only.
Because IP rating depends on gaskets that are disturbed when a radio is opened. A device previously repaired without proper reassembly may look intact and no longer be sealed, which in a wet or dusty environment means a failure that arrives months later and is blamed on the radio rather than on its history.
For low-stakes indoor use with a spare on the shelf, sometimes. For anything a shift depends on, the arithmetic rarely works: no warranty, an unknown battery, an unknown repair history and no service route mean the expected cost over three years is often higher than a new device.
The Hytera product range, TechnoRF engineering, installation, maintenance, technical service and business continuity planning — brought together into a system designed for how your operation actually works.
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