01
Network Drive Test
Mobile measurement
Logs signal power, quality and serving cell while you drive, geotags every reading, exports the log when you're back at your desk.
Cell Coverage Planner — runs in your browser
RF Coverage Planner & Field Tools for Telecom Engineers
Predict the coverage. Hand over the report.
Enter the site parameters, read the predicted coverage on the map, export a report with the assumptions and the numbers already laid out. Built by an RF engineer who got tired of a second truck roll because the first document came back.
Free plan · 5 sites per month · Report export on Pro, €15/mo
Coverage report — LU-0421
EXPORTED
Antenna height32 m
Azimuth / tilt120° / 4°
EIRP58.4 dBm
Band1800 MHz
ModelCOST-231 Hata
Cell radius, −105 dBm2.4 km
−120−70 dBm
±2 dB
Signal accuracy
850–1900
MHz bands covered
Android 5.0+
No root required
PDF + KML
Report export
The Android apps that go with it
Three field tools that came out of actual problems on site. Free, no root, no extra hardware, and they work offline where it matters.
02
Antenna Azimuth Checker
Antenna aiming
Points the phone at the antenna, reads the real azimuth off compass and GPS, checks it against the design file right there on the mast.
03
Cell Coverage Planner
On-site estimate
The planner on your phone for a quick estimate in the field. The browser version handles the report.
Frequently Asked Questions
Common questions about GSM Field Suite
What is GSM Field Suite?
GSM Field Suite is a web Coverage Planner that turns a site's radio parameters into a client-ready PDF coverage report, plus three free Android apps for GSM/RF field engineers: Network Drive Test for mobile signal logging, Antenna Azimuth Checker for antenna orientation verification, and Cell Coverage Planner for on-site coverage simulation.
Do these apps replace TEMS or other drive test tools?
Not for full-scale network audits, but for quick field checks, Network Drive Test replaces the need to carry a laptop and TEMS-class hardware for basic signal power, quality and serving cell logging.
Do I need any special equipment?
No. All three apps run on a standard Android phone using its built-in cellular radio, compass and GPS. No external dongles, no rooted device.
Which Android versions and frequency bands are supported?
Android 5.0 and above. Signal readings cover the 850–1900 MHz GSM bands with an accuracy of roughly ±2 dB.
Do the apps work without an internet connection?
Yes. Signal logging, azimuth checking and coverage estimation all work offline. An internet connection is only needed to download the app or export results afterward.
Are the apps free?
The three Android apps are free, with no subscription. The web Coverage Planner has a free plan (5 calculations per month) and a Pro plan at €15/month that unlocks PDF and KML report export. For custom adaptations or licensing for a team, contact us directly.
About the Developer
I've worked GSM networks for over 10 years, drive tests, antenna commissioning, coverage planning, the kind of fieldwork where you're standing under a mast with a laptop and a signal meter you didn't choose. These three apps replace gear I used to carry, or workflows I used to fake with a spreadsheet on site.
Each one exists because of one specific moment on the job:
- Network Drive Test: I got tired of TEMS-class tools that need a laptop in the trunk. This runs on the phone in my pocket.
- Antenna Azimuth Checker: I stopped trusting "the antenna looks about right" and started checking it against the design file, on the mast, with the phone I already had.
- Cell Coverage Planner: Before rolling a truck two hours out to a site, I wanted a rough coverage estimate first. This gives me that in a minute.
All three are native Android, no external hardware, work offline where it matters, and I still use them myself.
RF Toolbox
Free browser calculators for common field and planning tasks, no install required.
Link budget
Link Budget Calculator
Full RF link budget with free space path loss (FSPL), from transmitter power to receiver sensitivity.
Open toolAntennas
EIRP Calculator
Computes Effective Isotropic Radiated Power from TX power, cable loss and antenna gain.
Open toolSignal quality
RSRP/RSRQ/SINR Analyzer
Checks LTE/5G signal quality from RSRP, RSRQ and SINR values against standard thresholds.
Open toolPlan before the site visit
Coverage planning guides
Practical references for turning antenna parameters into a map, a field route and a report.
Prediction workflow
RF Coverage Prediction Software
From site inputs to a client-ready coverage report.
Read guideLTE planning
LTE Coverage Planning Tool
Prepare sectors and validation points before the visit.
Read guideAntenna planning
Antenna Tilt Coverage Calculator
Estimate how a tilt change reshapes a sector footprint.
Read guideLatest RF Guides
Practical field notes for GSM measurements, antennas and coverage planning.
Antennas
Mechanical vs Electrical Antenna Tilt: Technical Comparison and Field Guide
Learn the operational and electromagnetic differences between mechanical and electrical antenna tilt, how pattern distortion impacts cell coverage, and how to execute systematic field audits.
Read guideCoverage planning
Antenna Height and GSM Coverage: A Planning Guide
Antenna height is one of the most critical physical variables in GSM network planning. Learn how effective radiation height impacts propagation models, down-tilt geometries, overshooting cells, and overall C/I performance.
Read guideDrive testing
Good RSRP, Bad Throughput: What to Check First
Strong signal power can coexist with poor data performance. Start with quality, then separate radio, scheduler, MIMO and transport causes.
Read guideContact
A question, a custom need, pricing?
Write to me directly to talk it through, whether it's a demo, a license, or an adaptation to your network.