PAX

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

PAX

Frequencies	3.59 MHz,7.042 MHz,10.148 MHz,14.075 MHz,144.62 MHz
Frequency Range	3.59 MHz - 144.62 MHz
Mode	USB
Modulation	MFSK
ACF	—
Emission Designator	—
Bandwidth	500 Hz
Location	Worldwide
Short Description	PAX and PAX2 are developed by Patrick Lindecker F6CTE in 2005, and was derived from Olivia. It utilizes the AX.25 protocol that PACKET uses, and had a minimum SNR of -10dB. Can transmit APRS frames.
I/Q Raw Recording	—
Audio Sample

PAX and PAX2 are developed by Patrick Lindecker F6CTE in 2005, and was derived from Olivia. It utilizes the AX.25 protocol that PACKET uses, and had a minimum SNR of -10dB. Can transmit APRSAutomatic Packet Reporting System, an amateur radio-based system for real time tactical digital communications of information of immediate value in the local area frames.

PAX has a baudrate of 62.5 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. at 59 wpm and uses 8MFSK with 62.5 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). shift between tones in a bandwidth of 500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz)..

PAX2 is twice as fast as PAX and has a baudrate of 125 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. at 117 wpm and uses 8MFSK with 125 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). shift between tones in a bandwidth of 1000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz)..

Both PAX modes use 6-bit ASCII encoding alphabet. PAX is more robust compared to PACKET.

Samples

PAX	PAX2

Frequencies

PAX is used on 3.590 MHzMegaHertz (MHz) 10^6 Hz, 7.042 MHzMegaHertz (MHz) 10^6 Hz, 10.148 MHzMegaHertz (MHz) 10^6 Hz, 14.075 MHzMegaHertz (MHz) 10^6 Hz, 144.620 MHzMegaHertz (MHz) 10^6 Hz.

Decoding Software

Hobby Level Software

• MultiPSK.

Additional Links

• AC4M Digital Modes PAX
• G4UCJ Digital Modes
• MultiPSK PAX