Rattlegram 4+

SMS via audio‪!‬

aicodix GmbH

    • Free

Screenshots

Description

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 needed and the transmission of either 85, 128 or 170 bytes take about one second with the leading noise and fancy header disabled.

What’s New

Version 1.8

* Improved robustness
* Improved signal encoding
* Prevent sleep while app is running
* Added delay for Parrot Mode
* Added debouncing for Parrot Mode
* Added new options to the Danger Zone:
- Toggle to favor Bluetooth audio if available
- Toggle to output audio to default speaker
- Print audio sample rates
- Button to restart audio engine if stuck

App Privacy

The developer, aicodix GmbH, 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 Not Collected

The developer does not collect any data from this app.

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

You Might Also Like

SharkRF Link
Social Networking
HamSphere 5.0
Social Networking
Groups.io App
Social Networking
Morse Chat: Chat in Morse Code
Social Networking
Motorola Talkabout
Social Networking
UP-Messenger
Social Networking