SOTAMĀT SOTA / POTA Spotting 17+

Self-Spot off-grid via HF

Brian Mathews

Designed for iPad

    • 5.0 • 1 Rating
    • Free



For SOTA (Summits-On-The-Air) or POTA (Parks-On-The-Air) Amateur Radio operators to self-spot when you don't have internet, cellular, or satellite access (and more)!

SOTAMĀT (pronounced "sota-mate") is for licensed amateur radio operators (ham radio) who want to self-spot from remote areas where there is no cellular service, no internet, and who don't have access to a satellite communicator. If you enjoy Summits-On-The-Air (SOTA) or Parks-On-The-Air (POTA) this app is for you!

What you can do "offline":
• Post a Self-Spot (SOTA or POTA) via HF radio (no internet, cellular, or satellite required!)
• Post a Self-Alert (SOTA) via HF radio (useful for CW operators to 'tickle' RBNhole)
• Select and send predefined SMS messages to predefined recipients via HF radio
• See a reference of cloud services and SOTAMĀT 2-way commands
• See a reference of frequencies by mode

The app works by encoding your commands into a special message which is modulated using your iPhone or iPad for transmission over HF (using a built-in FT8 encoder, or use PSK31 or RTTY). Worldwide monitoring stations (skimmers) pick up your HF transmission and relay it to PSK Reporter, which forwards the message to the SOTAMĀT server for processing. SOTAMĀT then connects to the official SOTA or POTA or SMS services to carry out your instructions.

The amazing thing is that you don't need a computer (use your iPhone/iPad!) and you don't need special cables (use your phone's speaker directly into your HF radio's microphone input). The app not only computes the FT8 message, but also generates the FT8 audio.

The app also has a reference table of additional commands you can use when you are "online" (via SMS, eMail, or satellite):
• Post a Spot (SOTA/POTA)
• Post an Alert (SOTA)
• Get current spots (SOTA/POTA)
• Get information (callinfo, peak info, park info)
• ...and more!

See the web site for details.

What’s New

Version 1.1.0

New: login to your SOTAmat account on your iPhone and have one-click download of your SOTAmat configuration. No more need for “Configuration Blobs” (the old functionality still exists for people with rare use cases).

New (optional) feature: download the entire SOTA Peak and POTA Park databases so they are stored locally on your device for use offline. The SOTA/POTA Spot pages now display peak/park specific information such as recent activations, points, etc.

Improved: Several changes to the user interface.

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

App Privacy

The developer, Brian Mathews, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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