PACTOR III

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PACTOR Series: PACTOR I - PACTOR II - PACTOR III - PACTOR IV 
PACTOR III
PACTORIIIthumb.jpg
Frequencies 3 MHzMegaHertz (MHz) 10^6 Hz3,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3,000 kHzKiloHertz (kHz) 10^3 Hz
,30 MHzMegaHertz (MHz) 10^6 Hz30,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
30,000 kHzKiloHertz (kHz) 10^3 Hz
3,000 kHzKiloHertz (kHz) 10^3 Hz
MHzMegaHertz (MHz) 10^6 Hz
30,000 kHzKiloHertz (kHz) 10^3 Hz
30 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range MHzMegaHertz (MHz) 10^6 Hz3,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3,000 kHzKiloHertz (kHz) 10^3 Hz
- 30 MHzMegaHertz (MHz) 10^6 Hz30,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
30,000 kHzKiloHertz (kHz) 10^3 Hz
Mode USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables)
Modulation PSKPhase-Shift Keying
ACFAutoCorrelation Function
Bandwidth 400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.4 kHzKiloHertz (kHz) 10^3 Hz
4.0e-4 MHzMegaHertz (MHz) 10^6 Hz
,2400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).2.4 kHzKiloHertz (kHz) 10^3 Hz
0.0024 MHzMegaHertz (MHz) 10^6 Hz
0.4 kHzKiloHertz (kHz) 10^3 Hz
4.0e-4 MHzMegaHertz (MHz) 10^6 Hz
2.4 kHzKiloHertz (kHz) 10^3 Hz
0.0024 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description PACTOR III introduces 6 speed levels that provide higher throughput and improved robustness compared to PACTOR I and II. PACTOR III is on average 3.5 times faster than PACTOR II. With optimal conditions, PACTOR III becomes over 5 times faster.
I/Q Raw Recording
Audio Sample
PACTOR III introduces 6 speed levels that provide higher throughput and improved robustness compared to PACTOR I and II. PACTOR III is on average 3.5 times faster than PACTOR II. With optimal conditions, PACTOR III becomes over 5 times faster.

PACTOR III has a maximum bandwidth of 2400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).. This is a proprietary standard developed by SCS GmbH & Co. KG, Hanau, Germany.


Pactor III has 6 speed modes, made up of 2, 6, 14, 16, and 18 tone modulations, with each tone spaced 120Hz apart.


During a standard transmission connection between two operators, PACTOR III Modems will transmit a PACTOR I SELCALL to determine the optimal mode and speed to establish between the two operators.

Tablee.png

Noted Users[edit]

PACTOR is used by many groups, including Sailmail for mariners to send and receive emails. It is also used by Ham Radio operators, Governmental and Diplomatic agencies, and even NGO's.

Winlink utilizes PACTOR I-IV for it's data transmission modes.

Parts of the former Globe Wireless HFHigh Frequency (3-30 MHz) network is now used by Swisscom, including its own Bern Radio in Switzerland. [1] [2] Swisscom solely uses PACTOR III with huffman compression for data transfer. [3]

Audio Sample[edit]

Sample 1:


Sample 2:

PACTOR III Modes
Level 1 (2-Tone) Level 2 (6-Tone) Level 3/4 (14-Tone)
PIII 2tone.jpg
PIII 6tone.jpg
PIII 14tone.jpg

Level 5 (16-Tone) Level 6 (18-Tone)
PIII 16tone.jpg
PIII 18tone.jpg

Frequencies[edit]

Decoding Software[edit]

Hobby Level Software


Professional Equipment/Software

Additional Links[edit]

Additional Images[edit]