Free Telecom Tools
30+ calculators, reference tables, diagnostic tools and learning resources for RF engineers, field technicians and telecom students. All formulas sourced from 3GPP, ITU-R or IEEE. No sign up required.
RF Handbook HiCellTek 2026
The complete technical reference for RF and field engineers. 37 pages A4: 3GPP measurements, propagation models, MCS tables, link budget, antennas, L3 protocols, Qualcomm DIAG, HiCellTek 12+ modules. Every formula sourced from its exact 3GPP TS, ITU-R or IEEE section. Zero invented value.
Get the RF Handbook HiCellTek 2026
37 pages A4: spectrum, measurements, propagation, MCS, antennas, L3 protocols, DIAG. All formulas 3GPP/ITU-R sourced. Free PDF, sent instantly.
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๐กRadio Mobile (2G / 3G / 4G / 5G)
EARFCN / NR-ARFCN Calculator
Convert EARFCN and NR-ARFCN to frequencies and LTE/5G bands instantly.
Open tool →NR-ARFCN Calculator
Dedicated 5G NR-ARFCN conversion with GSCN and band mapping (TS 38.104).
Open tool →RSRP / RSRQ / SINR Calculator
Evaluate 4G/5G signal quality in real time with interactive thresholds.
Open tool →SINR โ MCS โ Throughput
Map SINR to CQI, MCS and theoretical throughput (TS 38.214, TS 38.306).
Open tool →5G Band Checker
Verify 5G NR band compatibility for your device by country and operator.
Open tool →NR Throughput Calculator
Compute 5G NR peak throughput with MIMO layers, numerology and bandwidth.
Open tool →NR Cell Identity Decoder
Split 36-bit NCI into gNB ID and local Cell ID with configurable prefix length.
Open tool →๐RF Toolkit (propagation, link budget, antenna)
Path Loss (FSPL / Hata / COST-231)
Radio propagation models : free space, Okumura-Hata, COST-231 extended.
Open tool →NR Link Budget
End-to-end link budget TX โ RX with system margin and fade margin.
Open tool →dB / dBm / mW / EIRP Converter
Bidirectional conversions across every RF unit (dBi, dBm, EIRP, ERP).
Open tool →Fresnel Zone Calculator
Radius and clearance for point-to-point links (ITU-R P.530).
Open tool →Antenna Calculator
Gain, effective aperture, beamwidth, wavelength.
Open tool →VSWR / Return Loss
Impedance matching, mismatch loss, reflection coefficient.
Open tool →Coax Cable Loss
Attenuation for LMR-400/600, Heliax LDF, RG-58 by frequency.
Open tool →Noise Floor + Sensitivity
Thermal noise kTB, noise figure, minimum Rx sensitivity.
Open tool →SNR / Eb/N0 Converter
Convert SNR โ Eb/N0, Shannon capacity, modulation thresholds.
Open tool →๐ฌDiagnostic Tools
L3 Protocol Decoder
Decode RRC and NAS messages online for 2G, 4G LTE and 5G NR.
Open tool →QMDL to Excel Converter
Transform your QMDL diagnostic logs into actionable Excel spreadsheets.
Open tool →Activate Qualcomm DIAG Mode
Per-brand guide : Samsung, Xiaomi, Pixel, OnePlus, Oppo, Vivo, Sonyโฆ
Open tool →IMEI Check (Model / Brand)
Identify the device, brand, chipset and supported bands from an IMEI or TAC.
Open tool →TAC Lookup
Retrieve manufacturer, model and spec data from the 8-digit TAC code.
Open tool →IMEI Blacklist Check
Check if an IMEI is blacklisted (lost or stolen). GSMA + CEIR database.
Open tool →IMEI Calculator (Luhn)
Compute the Luhn check digit and validate IMEI TAC/SNR/CD structure.
Open tool →IMEI / MEID Converter
Convert between IMEI, MEID and pseudo-ESN for legacy networks.
Open tool →VoLTE Checker
Verify VoLTE support for your device and operator, including VoNR fallback.
Open tool →Network Compatibility Checker
Check 2G/3G/4G/5G band support between device and operator worldwide.
Open tool →๐3GPP Reference Tables
QCI / 5QI Table
Complete reference for QCI (4G) and 5QI (5G NR) service classes.
Open tool →5G NR Thresholds (TS 38.133)
SS-RSRP, SS-RSRQ, SS-SINR, CSI-* tables with interactive converter.
Open tool →MCS TBS Code Rate
MCS / CQI mapping, TBS and code rate across LTE and NR.
Open tool →NR Bands Table
Complete 5G NR band list with frequencies, duplex mode and bandwidth.
Open tool →LTE UE Category Table
LTE UE categories 1 to 22 with DL/UL throughput and MIMO layers.
Open tool →LTE QCI / QoS Table
LTE QCI table with QoS parameters, GBR vs non-GBR, delay and loss.
Open tool →3GPP RSRP Threshold Mapping
Operator-grade RSRP thresholds aligned with 3GPP TS 36.133 and TS 38.133.
Open tool →๐ผBusiness Tools
๐Learning and Training
Telecom Quiz
Test your network knowledge with leveled technical questions.
Open tool →Telecom Challenge
Take on timed technical challenges and compare your scores.
Open tool →Knowledge Base
Articles, guides and tutorials on 2G to 5G mobile networks.
Open tool →Student Hub
Educational resources for telecommunications students.
Open tool →๐งญGuides and Assistance
Why use our tools?
100% Free
No hidden costs. Use all web tools without limits.
Built by Field Engineers
Developed by telecom engineers with real operator-side expertise.
3GPP / ITU-R Sourced
Every formula linked to a specific 3GPP or ITU-R document. No invented values.
No Sign Up
Instant access. No account required for online tools.
Frequently Asked Questions
Are HiCellTek tools really free?
Yes. All online tools (EARFCN calculator, 5G band checker, QMDL converter, QCI/5QI table, quiz, IMEI checker, path loss, link budget, etc.) are completely free with no sign up required. Some advanced features in the HiCellTek Android app require a subscription.
Do I need to create an account to use the tools?
No. The web tools work directly in your browser with no registration or installation. Results are computed locally when possible, so your data never leaves your device.
Who are these telecom tools for?
RF and field engineers, network optimization specialists, regulatory QoS teams, telecom students and technical sales teams working on 2G, 3G, 4G LTE, 5G NR and private 5G networks.
Do the tools work on mobile devices?
Yes. All web tools are responsive and work on smartphones, tablets and desktops. For real-time drive tests, RF monitoring and Layer 3 decoding, the HiCellTek Android app offers native chipset-level access on supported Qualcomm devices.
What is the difference between the online tools and the HiCellTek app?
The online tools are browser-based calculators and references. The HiCellTek Android app is a professional network diagnostics suite that accesses the Qualcomm chipset for Layer 3 decoding (RRC/NAS), RF monitoring, real-time drive testing, QMDL capture and VoLTE QoE measurement.
Are the calculators aligned with 3GPP specifications?
Yes. Every formula in the RF and radio calculators is sourced from a specific 3GPP, ITU-R or IEEE document (TS 38.214, TS 38.104, TS 38.133, TS 36.213, ITU-R P.530, etc.). No invented values. The RF Quick Reference PDF lists every source.
Take it further with HiCellTek Free
Download the free app on Google Play and access real-time network monitoring, Layer 3 decoding and drive test on your Android smartphone.