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The PTHSonde ground-station app on a laptop — a full SPC sounding-analysis workstation with the Skew-T and dashboard panels
SoftwareFree

Ground Station Software

The free PTHSonde ground-station app — a live Skew-T workstation with time-series telemetry, full SPC sounding analysis, a GPS map with GFS landing prediction, a balloon fill calculator, and link health.

FreeOpen source
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Windows app or run it in your browser — no account, no license.

Docs & downloads

Overview

The ground-station app turns the telemetry your receiver decodes into a full sounding-and-flight workstation. A live Skew-T and profiles build as packets arrive, one click renders a complete SPC severe-weather panel, and a GPS map with a GFS-driven landing predictor helps you plan the recovery. It runs as a Windows app or right in your browser.

Highlights

Why it's different

A live sounding as it flies

Skew-T, hodograph, and wind/θ/humidity profiles build in real time from your own telemetry, with the profile carried the whole ascent by the onboard pressure sensor.

Full severe-weather analysis

One click produces a complete SPC sounding panel — CAPE, shear, SRH, STP/SHIP composites, SARS analogs, and EF-probabilities.

Plan the flight and the recovery

A balloon fill calculator sizes your gas fill for a target ascent or burst, and a GFS landing predictor calls the landing spot and refines it live.

Free & open source

Runs as a Windows app or a browser-based dashboard — no account, no license. The source lives on GitHub.

A closer look

Inside the dashboard

Live Skew-T with hodograph and profiles
A live Skew-T. Temperature and dewpoint plot as packets arrive, beside a hodograph and wind, θ, and humidity profiles — the sounding builds in front of you as the sonde climbs.
The full Analysis dashboard — SHARPpy panel with live telemetry and severe-weather indices
The full Analysis view. One click processes the flight into a complete SHARPpy panel, flanked by live telemetry and a full column of severe-weather indices — CAPE, CIN, shear, SRH, STP/SHIP composites, SARS analogs, and EF-probability boxes.
The balloon fill calculator
The balloon fill calculator. Enter your payload and balloon, aim for a target ascent rate or burst altitude, and it returns the neck lift to fill to, the gas volume, and the full flight profile — then sends it straight to the landing predictor.
The live GPS map with the flight track
The live GPS map. The flight track draws in real time from the sonde's own fix, so you can follow the balloon up and across and drive to the landing spot.

Specifications

The numbers behind it

The app

PlatformWindows app or browser-based
InputUSB serial from the ground station (CSV telemetry)
Live viewsSkew-T, time series, map, system health
AnalysisFull SPC sounding panel per flight
PlanningBalloon fill calculator + GFS landing predictor
LicenseFree & open source

Complete the kit

Goes well with

Built to orderThe PTHSonde radiosonde payload with its exposed thermistor probe
Radiosonde system

PTHSonde

A complete, reusable radiosonde system — pressure, temperature, humidity, wind, and GPS, streamed to a desktop ground station with a full sounding analysis.

$135 eachView
Built to orderThe PTHSonde LoRa ground receiver with antenna
Ground segment

PTHSonde Ground Station

The receiving end of the PTHSonde link — a 915 MHz LoRa receiver that decodes telemetry in real time and streams it to the desktop app over USB.

$220 eachView
7 in stockCAD render of the PTH100 sensor breakout board
Sensor breakout

PTH100 Sensor Breakout

The PTHSonde's pressure, temperature, and humidity suite as a research-grade I²C breakout — Qwiic plug-and-play, 3.3–16 V input, flown on balloons, drones, and aircraft.

$69 eachView

Free download

Get the Ground Station Software

Free and open source — run the Windows app or the browser-based dashboard. No account, no license.

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