Do not order one anti-jamming unit for every machine just because the jobsite uses GNSS. First locate the satellite-reception problem. A construction site may have one fixed base station sending corrections to several moving machine receivers, or the machines may use a network correction service instead. The base, each machine’s GNSS input and the correction-delivery link are different purchase locations.
Base station, machine or correction link?
Trimble’s construction base-station guide describes a fixed base, moving rovers and a radio or network path carrying corrections between them. This is the system distinction used below, not evidence of ResiNav integration with Trimble equipment. Compare observations from the base and at least one affected machine at the same time before assigning a hardware quantity.
| Observed boundary | Where to start the purchase decision | What not to buy as the first remedy |
|---|---|---|
| The base receiver loses satellite tracking while multiple machines depend on its corrections. | Check the base antenna location and RF input. If interference at that input is established, evaluate one base-side mitigation path before counting machine-side units. | A fleet-wide set of machine units solely because several machines report the same downstream symptom. |
| The base remains healthy, corrections arrive, but one or a few machines lose satellite tracking in a work area. | Check the affected machines’ own antenna and receiver inputs. Evaluate mitigation on those machine-side paths if interference is the cause. | A base-side device for a problem confined to a moving receiver. |
| Satellite tracking remains available, but correction messages stop or become stale. | Review the radio, network, service and receiver correction settings. Trimble’s troubleshooting guide lists communication and configuration faults that can prevent a rover receiving base corrections. | An RF anti-jamming unit as a substitute for correction delivery. |
| A machine enters a tunnel, a deep cut or another place with inadequate sky view. | Review the site’s visibility and the machine-control system’s alternative positioning or fallback plan. | More antenna elements as a promise to restore blocked satellite signals. |
Count the affected reception paths, not the fleet nameplate
Consider an illustrative site with one base and six GNSS-equipped machines. If the evidence points only to the base satellite input, the first RF-mitigation candidate is a base-side path, not seven units. If the base and correction link are healthy but two machines have a repeatable reception problem, the initial candidate count follows those two machine paths. If the fault is only in correction delivery, this example calls for no anti-jamming units as the correction-link remedy. These are scoping examples, not a tested ResiNav installation, compatibility statement or final bill of materials.
A shared symptom does not prove a shared RF cause. Topcon’s base-station guide describes the fixed station’s correction role and the importance of a clear, stable site. If the site’s reference position or correction path is wrong, a device placed at a machine’s satellite input does not fix the reference data.
Keep the ResiNav shortlist inside its documented role
ResiNav’s published products can be screened for the satellite-reception path identified above. For example, the RN-009Pro-8CH-G1-WG-DT record lists BDS B1, GPS L1 and GLONASS G1, while the RN2501-AJS-4CH-DPA record lists BDS B1 and GPS L1. Those published signal lists help exclude a documented configuration that does not cover a stated signal requirement; an unlisted signal remains unconfirmed, not proven unsupported. Neither record establishes compatibility with a named construction receiver, base station, machine controller or correction service.
Use the product catalogue and public English datasheets for the exact model record. Keep the base or machine receiver, correction subscription, radio or network equipment, machine-control display and controller as separate order lines unless a supplier’s actual offer explicitly includes them. A ResiNav RF-path candidate is not a complete RTK or machine-control purchase.
Put the right quantity on the enquiry
State whether the proposed unit is for a fixed base input, an on-machine input or both; identify the number of each affected path. Attach the receiver’s required signals and the mounting and supply constraints for those paths. State separately who supplies corrections and how they reach the machines. This lets a quotation distinguish the candidate RF units and installation items from receiver, communications and control-system work, without treating an unverified path as an approved integration.
For the broader functional split, read what anti-jamming and RTK purchases each provide. For the machine’s actual grading, guidance or automatic-control function, use the heavy-equipment purchase guide. When the reception path and provisional quantity are known, discuss the relevant ResiNav configuration; no RF performance or machine compatibility is implied by the example above.
NEXT STEP
Turn available platform information into an engineering review.
Use the Technology centre to frame the discussion, review relevant application scenarios, then send the available platform and receiver details for confirmation.