TropoDX
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| Rating | Price | |||
|---|---|---|---|---|
| United Arab Emirates | <1%0 | — | AED 7.99 $2.18 | |
| Afghanistan | <1%0 | — | $1.99 | |
| Antigua And Barbuda | <1%0 | — | $1.99 | |
| Anguilla | <1%0 | — | $1.99 | |
| Albania | <1%0 | — | $1.99 | |
| Armenia | <1%0 | — | $1.99 | |
| Angola | <1%0 | — | $1.99 | |
| Argentina | <1%0 | — | $1.99 | |
| Austria | <1%0 | — | €1.99 $2.30 | |
| Australia | <1%0 | — | A$2.99 $2.12 |
Description
TropoDX is the ultimate real-time tropospheric propagation monitoring tool for amateur radio operators worldwide.
FEATURES:
Real-time Tropospheric Index (0-100 scale) based on atmospheric conditions
5-day propagation forecast with hourly updates
Regional propagation maps for Europe, North America (East/West), Asia, and Australia/Pacific
Push notifications for excellent DX conditions (Index 80+)
Advanced atmospheric parameters: K-Index, Refractivity, Temperature-Dew Point spread
Location-based weather data from anywhere in the world
Detailed DX distance estimates based on current conditions
Historical data tracking (last 48 readings)
Support for both Metric and Imperial units
Works on iPhone and iPad with landscape support
PERFECT FOR:
VHF DXers (2m, 6m bands)
UHF DXers (70cm band)
Contest operators
EME operators checking for optimal conditions
Anyone interested in VHF/UHF propagation
UNDERSTANDING THE INDEX:
0-40: Poor - Normal conditions, local contacts only
40-55: Fair - Slightly enhanced propagation
55-70: Good - DX possible, 200-500 km range
70-85: Very Good - Strong DX, 500-1000 km range
85-100: Excellent - Extreme conditions, 1000+ km possible!
The app calculates tropospheric conditions using atmospheric pressure, temperature, humidity, dew point, and refractivity to predict VHF/UHF radio wave propagation. When high-pressure systems create temperature inversions, radio signals can travel much farther than normal - and TropoDX helps you catch those moments!
DATA SOURCES:
Real-time weather data from OpenWeatherMap
Regional propagation maps from DX Info Centre
Scientific calculations based on radio refractivity formulas
Whether you're chasing grid squares, working DX contests, or just curious about propagation, TropoDX gives you the information you need to maximize your VHF/UHF operating.
73 and happy DXing!