Radio Systems
Complete two-way radio system planning, supplied from China
We select the radios, work out how many repeaters your site needs, and plan the full equipment configuration — then supply it, pre-programmed, with remote support through installation.
When a project needs planning rather than an order
If none of these apply, you do not need this page — the catalogue is enough.
One site, more than a handful of users
Once people spread across a site, handheld-to-handheld stops being enough and the repeater question arrives.
Buildings, floors or basements in the way
Concrete, steel and earth decide coverage. This is where a single repeater usually stops being enough.
More than one shift or crew
Talk groups have to be planned so a shift handover does not become a channel argument.
Several sites that must talk to each other
Linked repeaters or a dispatch position, depending on how often the sites need each other.
Hazardous areas on site
The terminal model changes, and with it the accessories and the approvals you need to hold.
An existing fleet you want to extend
Possible in many cases, but only after the current model, band, protocol and programming rights are confirmed.
What we need from you
You do not need all of it to start. Send what you have — anything missing is listed back to you, and nothing is assumed on your behalf.
About the site
- Site plan or sketch with distances
- Number of buildings, floors and any underground areas
- Terrain notes: hills, pits, tunnels, steel structures
- Where the control room or supervisor sits
About the users
- How many people carry a radio
- How many are on shift at the same time
- Roles that must talk separately (groups)
- Whether vehicles need a radio too
About existing equipment
- Current make, model and band
- Whether you hold the programming file
- Any repeater already installed
- Frequency licence details, if you have one
About the project
- Hazardous-area classification, if any
- Whether dispatch or recording is needed
- Destination country and delivery terms
- Target date and budget range, if fixed
How the planning is done
Six steps, in this order. The quantities come out of steps 1 to 5, which is why there is no self-service calculator on this page.
- 01
Read the site before the catalogue
Distances and obstructions come first. A site with 4 km of open ground and a site with 4 km of walls are not the same project.
- 02
Fix the talk-group structure
Groups follow roles and incidents, not headcount. Getting this wrong is expensive later because every radio has to be reprogrammed.
- 03
Decide handportable, mobile, or both
Vehicle-mounted radios exist because a handheld inside a cab is a bad experience. The split changes the quantity and the price.
- 04
Size the repeater count from coverage, not area
One repeater is usually enough for open ground within a few kilometres; buildings and tunnels need distributed coverage instead.
- 05
Select the band and confirm the licence path
UHF or VHF is a regulatory and terrain question before it is a technical one. We state which band we are quoting and why.
- 06
Build the BOM line by line
Radios, repeaters, duplexer, antenna, feeder, power, chargers, spares. Optional items are marked optional rather than bundled.
What you receive
What a system project actually delivers
Six deliverables, each with what you get and where our responsibility stops. Read the third column before you decide how much of this you need.
| Service | What you receive | Scope note |
|---|---|---|
| Requirement analysis | Headcount, roles, shifts, coverage area and the talk-group structure written down | We do not size a system from a headcount alone |
| Equipment quantity planning | Radio, repeater and accessory quantities with the reasoning behind each number | Quantities are stated as a proposal, adjustable after your review |
| System architecture | Connection diagram and site layout showing what talks to what, including which items are optional | Based on the data you send; not a substitute for an on-site RF survey |
| BOM and quotation | Model, quantity, configuration, accessories and itemised pricing | Pricing valid for the stated validity period only |
| Pre-configuration and testing | Programming to your frequency plan, talk groups, emergency behaviour, plus outgoing checks within the agreed scope | Programming depends on you supplying a usable frequency plan or licence details |
| Technical support | Remote commissioning guidance, configuration help and follow-up during rollout | Remote only — we do not travel to site for installation or acceptance |
Overseas field survey, physical installation and final acceptance are carried out by your local team or contractor. We support that work remotely and put the boundary in writing before the order, not after.
Reference configuration
How the numbers are derived — one worked example
A 40-user open-pit mine site. Shown so you can see the reasoning, not so you can copy the quantities.
Example only — not a quotation
Design assumptions
- Open-pit mine, 3.5 km across, no underground workings
- 40 radio users across two 12-hour shifts, 22 on shift at peak
- One control room that needs to call all groups at once
- No existing repeater on site; a UHF licence is held by the operator
- Vehicles stay on the pit rim road; no tunnel or basement coverage
Still to confirm
- Actual coverage verification still needs a site survey or a drive test after installation
- Repeater position depends on available power and backhaul at the pit rim
- Talk-group names and emergency behaviour must come from your operating procedure
- If any area is classified as hazardous, the handheld model changes and the quantity may not
| Line item | Qty | Why this quantity |
|---|---|---|
| Motorola DP4401e handheld | 36 | 32 duty + 4 spares (12.5%) |
| Motorola SLR 5500 repeater | 1 | single site, pit rim position |
| Duplexer + cabinet kit | 1 | one per repeater, single antenna |
| Omni antenna + 30 m feeder | 1 | height driven by pit depth |
| Motorola DM4401e vehicle radio | 4 | one per shift supervisor vehicle |
| Multi-unit charger | 4 | six-bay, one per crew room |
| Spare battery | 12 | one per three radios |
The 36 handhelds are 32 on-shift positions plus 12.5% spares. One repeater covers open ground at this radius; the same 40 users inside a multi-storey building would need a different answer entirely. Prices are deliberately absent — a real BOM is quoted against quantities, destination and terms, and a number here would be mistaken for an offer.
Service flow and response times
Two different clocks, stated separately so neither is mistaken for the other: the first reply is fast, the full configuration takes longer because it depends on your data.
- 01You
You send the site data
Form, drawing, or a WhatsApp message with photos.
- 02Within 1 business day
We confirm what is missing
A short list of the gaps that would change the design.
- 033-5 business days after data is complete
Configuration proposal
Architecture sketch, quantities and reasoning, plus the open questions.
- 04With the proposal, or after your revision
Itemised BOM and quotation
Model, quantity, configuration, accessories, terms and validity.
- 05After order confirmation
Programming and pre-shipment checks
Loaded to your frequency plan and checked within the agreed scope.
- 06Per agreed lead time
Shipment and remote commissioning
DDP or DAP as agreed, then remote guidance during installation.
What we do and what stays with you
The boundary is written down before the order, because it is the part buyers are unhappiest about discovering later.
Included — remote and supply side
- Remote requirement analysis and coverage reasoning based on the data you provide
- Equipment selection, quantity planning and an itemised BOM
- System architecture sketch showing what connects to what
- Programming to the frequency plan and talk groups you supply
- Outgoing functional checks within the agreed scope, before dispatch
- Remote support during installation, configuration and first use
Not included — stays local
- On-site RF survey, drive test or spectrum measurement
- Physical installation, cabling, antenna erection or tower work
- Frequency licensing on your behalf — the licence stays with you
- Final acceptance testing and sign-off, which remain with your team
- Guaranteed coverage figures before a survey has been done
- Compatibility promises before the existing fleet is identified
We are an independent supplier, not a manufacturer, and we do not claim factory authorisation. Coverage is confirmed by measurement on site; designs here are proposed from your data and state their assumptions.
Questions buyers ask before sending a project
Can a supplier in China help plan a complete two-way radio system?
Yes, for the planning and supply side: requirement analysis, equipment quantities, architecture, BOM, programming and remote support. What we cannot do remotely is survey your site or install the hardware. Those two steps stay with your local team, and we say so before quoting rather than after.
How many radios and repeaters does my facility need?
Radios follow the number of people on shift plus spares, and the number of talk groups. Repeaters follow coverage: distance between users and what stands between them. A facility of 40 users on open ground may need one repeater; the same 40 users across four floors of concrete may need distributed coverage instead. Send a plan and we will put numbers and reasoning against it.
What information do you need for a radio system quotation?
Site plan with rough distances, building and floor count, underground areas, headcount and peak shift size, roles that need separate groups, existing equipment with model and band, hazardous-area classification if any, destination country, and target date. Missing items are listed back to you rather than guessed.
Can you supply radios, repeaters, antennas and pre-configuration together?
Yes. A single BOM can cover handhelds, vehicle mobiles, repeaters, duplexers, antennas, feeders, power, chargers and spares, with programming included. You can also order any subset — buying only the radios is a normal way to work with us.
Will new radios work with the fleet we already have?
Often, but not automatically. It depends on the band, the air interface (analogue, DMR, P25), the feature set and whether you hold the programming rights for the existing units. We check those four things before committing to anything.
Can you guarantee coverage across the whole site?
No, and any supplier who does before seeing the site is guessing. We can give a defensible design based on your drawings and site data, and we state the assumptions it rests on. Final coverage is confirmed by measurement on site after installation.
Do you provide ATEX or IECEx equipment?
The catalogue includes models marketed by their manufacturers for hazardous areas, such as the DP4401Ex and MTP8550Ex families. Which approval a given unit actually holds should be confirmed against the manufacturer documentation for the exact variant before you buy — we state the model and let the certificate speak. In practice buyers search for an explosion-proof radio, an explosion proof walkie talkie, an ATEX certified handset or an IECEx certified unit — all four describe the same group of models, and the certificate for the exact variant is what decides whether a given unit may be used in a classified area.
What does a system project cost?
There is no meaningful per-site figure without quantities and destination. We quote an itemised BOM rather than a lump sum so you can see what each line contributes, and you can remove lines without renegotiating the whole package.
Request a system recommendation
Send what you have. Drawings and photos help; a complete form does not have to be perfect before it is useful.
