SOTAcat — Wireless Rig Control for Field Ops

WiFi CAT control for Elecraft KX2/KX3/KH1. Your phone becomes your radio console.

Highlights

Chase contacts with click-to-pounce

Tap a spot, radio tunes. SOTA, POTA, WWFF—all in one list.

Control your rig and spot in all conditions

Full rig control, CW keyer, and self-spotting—even off-grid via FT8.

Get Started in 60 Seconds

1. Connect — Join WiFi SOTACAT_xxxx (password: 12345678)
2. Open — Browse to http://192.168.4.1 or http://sotacat.local
3. Verify — You should see the header bar with UTC time, battery %, and green connection dot

Android note: .local addresses may not work. Use 192.168.4.1 or see Networking guide.

In the Field

No Cell Service (Offline)

• RUN works fully: tune radio, send CW, toggle TX
• CHASE requires internet (empty when offline)
• Self-spot via SOTAmat FT8 synthesis (requires SOTAmat app — iOS · Android)

With Cell Service

• CHASE live spots with tap-to-tune
• SMS Spot / SMS QRT buttons
• Full click-to-pounce workflow

Page not responding? See Networking troubleshooting

Documentation

Users: Getting Started · UI Tour · Networking · Troubleshooting

Developers: Build · Architecture · Web UI

Hardware: Get a SOTAcat

Get a SOTAcat

• Buy pre-made: K5EM's Store
• Build your own: Hardware guide

Support

• Bug? GitHub Issues
• Suggestion? GitHub Discussions
• Help? #sotacat-sotamat on SOTA-NA Slack — how to join