Rate this app:

More details

Add your tips

Hints and Tips:

Glitches:

Codes:

Guide:

Easter Eggs:

Prueba Prueba Prueba

Advice for new users:

Add your questions or answers

Q: How to get the best score?

Q: What is your favourite trick in this game/app?

Q: What is your strategy?

Rattlegram - SMS via audio! Gameplay, Trailers and Related Videos

Watch RattleGram SMS Over Radio App video.

Watch Send Text Messages with Walkie Talkie Radios using Rattlegram (FRS, GMRS, HAM) #shorts video.

Watch How To Send Digital Text Messages Over GMRS Or Ham Radio - Texting Digital Messages On GMRS Radios! video.

Watch Rattlegram Ham Radio Text Messenger video.

Watch SMS via audio APK avec un UV-5R et Rattlegram video.

Watch Radio Comms: Rattlegram on FRS/GMRS video.

Watch Rattlegram video.

Watch Field testing #Rattlegram Repeater installed at home video.

Watch You need to download Rattlegram to decode this message… video.

Watch #Rattlegram Test Signal video.

About the application:

COFDMTV is based on COFDM (coded orthogonal frequency-division multiplexing) technology: - 160 ms long OFDM symbols - 6.25 Hz per sub-carrier - 1/8 guard interval - differentially encoded PSK (phase-shift keying) modulation - systematic polar codes for forward error correction Currently Modes 14, 15 and 16 are supported: Using either SPC(2048, 1392), SPC(2048, 1056) or SPC(2048, 712) with CRC32C aided SCL decoding and differential QPSK modulation for the payload. Only a bandwidth of 1600 Hz is required and the transmission of either 85, 128 or 170 bytes take about one second with the leading noise and fancy header disabled.