Start with the operating requirement
A quoted radio range cannot replace a survey of the actual road shape, obstructions and installed antenna positions. Begin with the site, intended operation and authority requirements. Record assumptions beside the requested configuration so the supplier, integrator and installer are reviewing the same system. The article is a buyer's planning resource; final design, compliance and operating decisions remain project specific.
Information to define before quotation
| Field | What to record | Why it matters |
|---|---|---|
| Site geometry | Signal positions, separation, bends, gradient and side roads | Defines the real communication path |
| Obstructions | Vehicles, barriers, buildings, vegetation and terrain | Identifies changing and fixed blockage |
| Equipment position | Antenna height, orientation and cable arrangement | Makes the test repeatable |
| Radio environment | Observed interference and channel plan | Records local conditions |
| Verification | Link quality, events, loss and recovery at each position | Provides deployable evidence |
Use a controlled review sequence
- Site geometry: Signal positions, separation, bends, gradient and side roads Defines the real communication path
- Obstructions: Vehicles, barriers, buildings, vegetation and terrain Identifies changing and fixed blockage
- Equipment position: Antenna height, orientation and cable arrangement Makes the test repeatable
- Radio environment: Observed interference and channel plan Records local conditions
- Verification: Link quality, events, loss and recovery at each position Provides deployable evidence
Give every important item an owner and a document reference. Where a value comes from a drawing, tender, authority instruction or product datasheet, identify that source and revision. Mark unresolved items rather than filling gaps with a catalogue assumption.
Build acceptance around observable evidence
Translate the approved requirements into checks that an independent witness can repeat. State the test setup, equipment identity, initial condition, expected result, measured or observed result and any deviation. Keep photographs, data exports and signed records with the relevant model, firmware or drawing revision.
A passing result for one configuration does not automatically cover a different voltage, optical assembly, interface, battery, mounting arrangement or software release. Define which differences require a document review, sample approval or repeated test.
Common specification mistakes
- Testing units side by side and assuming the site will match
- Recording distance without antenna height and obstructions
- Checking connection but not loss and recovery behavior
These errors usually appear when a quotation is based on a short product name instead of a system description. A clear schedule and acceptance record reduce rework during sample approval, production and commissioning.
Prepare the supplier enquiry
Send the project location, intended use, quantity, destination, applicable tender or standard, required interfaces, operating conditions and requested documents. Ask the supplier to identify confirmed items, options and exceptions in writing. For GAOQIAO catalogue options, start from the relevant product category and request the current drawing and data for the exact offered model.
Frequently asked questions
Can the supplier guarantee range from a catalogue value?
A catalogue value needs stated conditions. Confirm performance at the actual site and installed positions.
When should the survey be repeated?
Repeat it after material changes to road layout, equipment position, antenna, firmware or the radio environment.
What should the site record include?
Use a marked plan, photos, equipment identities, positions, test conditions, results and unresolved limitations.