Olivia

Olivia
Frequencies	3 MHz,30 MHz
Frequency Range	3 MHz - 30 MHz
Mode	USB
Modulation	MFSK
ACF	—
Emission Designator	—
Bandwidth	500 Hz,125 Hz,250 Hz,1000 Hz,2 kHz
Location	Worldwide
Short Description	OLIVIA is an amateur digital teletype mode designed by Pawel Jalocha SP9VRC in 2005. Its goal was to be effective even in poor propagation conditions.
I/Q Raw Recording	—
Audio Sample

OLIVIA based Modes: Olivia - Contestia - RTTYM - PAX - VOICE

OLIVIA is an amateur digital teletype mode designed by Pawel Jalocha SP9VRC in 2005. Its goal was to be effective even in poor propagation conditions. It can also decode well under other noise, QSB, QRM, flutter caused by polar path propagation and even auroral conditions. Olivia uses 7-bit ASCII alphabet. There are a handful of amateur digital modes that are derived from Olivia, including RTTYM and PAX.

Olivia is occasionally utilized during the Shortwave Radiogram transmissions, which run every weekend on WRMI and WINB (USA). See the SW Radiogram website for the schedule.

Olivia Submodes[edit]

125, 250, 500, 1000, and 2000 are the available bandwidths. 2, 4, 8, 16, 32, 64, 128, and 256 are the available tones. There are a total of 40 possible submodes.

Olivia's submodes are determined by bandwidth and number of tones. This is represented with the "OLIVIA X/Y" or "OLIVIA X-Y" format, where X = # of tones and Y = Bandwidth in HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).. E.g.: OLIVIA 8-250 means 8 tones with 250 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). bandwidth.

The standard Olivia submodes (tone/bandwidth) are 4/125, 8/250, 16/500, 32/1000, and 64/2000.

The most commonly used submodes in order of use are 16/500, 8/500, 32/1000, 8/250, and 16/1000. Most Olivia usage is using one of the 7 following submodes: 32/1000, 16/1000, 16/500, 8/500, 8/250, 4/250, and 4/125.

Possible Submodes
blue = Standard
green = Non-Standard Common Modes
2/125	4/125	8/125	16/125	32/125	64/125	128/125	256/125
2/250	4/250	8/250	16/250	32/250	64/250	128/250	256/250
2/500	4/500	8/500	16/500	32/500	64/500	128/500	256/500
2/1000	4/1000	8/1000	16/1000	32/1000	64/1000	128/1000	256/1000
2/2000	4/2000	8/2000	16/2000	32/2000	64/2000	128/2000	256/2000