RF Field Services

External RF Interference Hunting

Elevated RTWP, degraded uplink, dropped calls with no fault found on the site. We sweep the band, correlate across affected sectors, take bearings in the field and locate the emitter — then prove the fix with post-mitigation measurements.

When to call us

The site sweeps clean. The uplink is still degraded.

External interference is the problem that stays open. The site sweeps clean, the antenna line passes, the alarms clear — and the uplink is still degraded. It stays open because finding the source means leaving the site and working the RF environment around it, which is a different discipline from site maintenance.

That is the work GCorp’s specialist interference teams are built for. Our teams carry portable spectrum analyzers and directional antennas, work from multiple vantage points, and treat every investigation as a measurement exercise that has to stand up in a report.

Investigation method

Multi-site and multi-sector RTWP correlation and trending
Uplink spectrum sweeps across the affected band and adjacent spectrum
Signal characterization — bandwidth, duty cycle, modulation behavior
Direction finding with directional antennas from multiple vantage points
Triangulation to a physical source, with coordinates and mapping
On-site identification and owner engagement where the source is accessible
Mitigation support: shutdown, filtering, relocation or replacement
Post-mitigation validation sweeps against the pre-work baseline

Field localization

From network data to a located source.

01 Baseline and scope

We start from your data: RTWP trends, alarm history, affected sectors and the timeline. Before anyone mobilizes we establish which sites are affected, when the interference is present, and what the network is already telling us.

02 Spectrum characterization

On site, we sweep the uplink band and capture the interferer's signature — center frequency, bandwidth, duty cycle and behavior over time. A signal that appears only during business hours is a different search from one that runs continuously.

03 Direction finding

Using directional antennas from the site and from surrounding vantage points, we take bearings on the strongest consistent return. One good bearing is a guess; several bearings that intersect are a location.

04 Source location and identification

We triangulate to a physical location, close on it at street level, and identify the emitting device — commonly a faulty repeater, an unlicensed booster, a failed amplifier or damaged customer equipment.

05 Mitigation

Where the source is accessible and the owner cooperative, we resolve it on the spot. Where it is not, we hand you a documented case with everything needed for escalation, including regulatory referral where that is the right path.

06 Validation and closeout

We re-run the sweeps and compare RTWP against the pre-work baseline, so the improvement is measured rather than asserted, and package the evidence into a closeout report.

Evidence delivered

A closeout your engineers can file.

Each investigation ends with the measurements behind the finding and the fix.

Pre- and post-mitigation spectrum plots
RTWP trend comparison across affected sites
Field bearings with vantage points and headings
Source location with coordinates and mapping
Photographs of the emitting device where accessible
Written findings, actions taken and recommendations
Escalation package where the source could not be resolved directly

Corrective path

Connect with GCorp

1-469-473-0934 info@gcorp-inc.com1415 Legacy Drive, Suite 220, Frisco, TX

Contact GCorp