Olivia Digital Mode on HF - Community and Technical Information
Description
This resource is dedicated to the Olivia digital mode for amateur radio HF usage, providing information for chat and emergency communications. It introduces Olivia as a Multi-Frequency Shift Keying (MFSK) radioteletype digital mode designed for difficult propagation conditions on shortwave radio bands (3 MHz to 30 MHz). The site explains that Olivia signals can be decoded even when noise amplitude is over ten times that of the digital signal, making it suitable for transmitting ASCII characters over noisy channels with significant fading and propagation phasing. Common Olivia modes are expressed as X/Y (tones/bandwidth in Hz), with examples like 8/250, 16/500, and 32/1000. The site offers links to the Olivia on Groups.io, Facebook, and Discord communities, as well as the Olivia DX Club on ClubLog. It also provides information on the history of Olivia, developed by Pawel Jalocha in 2003, and discusses technical notes regarding Automatic Level Control (ALC) settings for Olivia operation. The site mentions suggested calling frequencies and details about QSO parties.