Adding radios to an existing VHF network

Keep the existing network details

Start with the full model numbers and frequency variants of the radios already in use. If available, keep a copy of their programming and details of any repeater or managed radio system.

A VHF label describes a broad band. The replacement must support the exact frequencies used by the network, including different transmit and receive frequencies where a repeater is used. A UHF-only radio cannot join that VHF radio channel directly.

Identify how the channels operate

For analogue FM, record channel width, CTCSS/DCS tones, selective calling and repeater access. For DMR, record the relevant colour code, time slot, talkgroups and call settings. NXDN, dPMR and P25 channels need equipment and programming for their own system.

A radio that supports analogue and digital can still be programmed for analogue channels only. Its list of capabilities does not tell us which mode your network uses. If you do not know, leave the answer unknown for expert review.

Select the features needed for the job

Confirm the number of radios, necessary channels, keypad or display preference, battery requirements and existing accessories you want to retain. A different model or brand may be suitable, but accessory fit must be checked separately.

Flag encryption, emergency signalling, trunking or managed network features before choosing alternatives. If equipment will enter a hazardous area, provide the site ATEX requirement and check the approved radio, battery and accessory configuration.

Compare available equipment

Help me choose records what is known about your network and produces an editable equipment proposal. You can refine the requirements and quantities before ordering. If you already know the exact equipment required, use the catalogue and basket.

• Help me choose
• Browse the catalogue
• Read about mixing radio brands