🐸 Ribbit Message Codec (WASM)

Complete message encoding/decoding system for amateur radio data transmission.
Watch data flow: Human-Readable → Binary → Bytes → Hex → Transmission → Hex → Binary → Human-Readable

⏳ Loading WASM Module...

Select Message Mode

💬 Chat Mode (UTF-8) Flexible, any UTF-8 characters 🏆 Contest Mode (Bitpacked) Efficient, 40-60% smaller, timestamps

📤 Step 1: Encoding

Encode Human-Readable Data → Binary

Callsign & Location

Ham Radio Callsign (up to 8 chars)

Gridsquare (6 chars: AA00aa)

Chat Mode Fields

Full Name

Phone (optional)

Contest Mode Fields

First Name (up to 15 letters)

Last Name (up to 15 letters)

Emergency Message (Part of Message ID)

Message ID (80 bits) = Callsign + Timestamp + Emergency

NTP Time Sync

GPS Location Active

Timestamp (UTC) - For ACK/QSO Confirmation

Current UTC Time

Year/Month (10 bits)

0000000000

Months since Jan 2026

Day (5 bits)

00000

0-30 (0-based)

Hour (5 bits)

00000

0-23 UTC

Minute (6 bits)

000000

0-59

Second (5 bits)

00000

2-sec resolution

Combined Timestamp (31 bits)

0000000000000000000000000000000

Message

Message Content

⬇ TRANSMISSION ⬇

📥 Step 2: Decoding

Decode Binary → Human-Readable Data

Input Encoded Data

Hexadecimal Bytes (space-separated)

🐸 Ribbit Message Codec (WASM)

Select Message Mode

Encode Human-Readable Data → Binary

Callsign & Location

Chat Mode Fields

Contest Mode Fields

Timestamp (UTC) - For ACK/QSO Confirmation

Message

✅ Encoded Message

Mode

Size

Timestamp Breakdown (31 bits)

Binary Representation (bits)

Hexadecimal (bytes)

Byte Array

📊 Mode Comparison

Decode Binary → Human-Readable Data

Input Encoded Data

Reconstructed Bitstream

✅ Decoded Values