PACTOR II

General Information

Pactor-II mode is a proprietary standard developed by SCS GmbH & Co. KG, Hanau, Germany.       
It is an advancement of the Pactor-I mode.

Usage:

§ ARQ and data communication over HF.

Mode Details

 

Item

Value

Standard

Modulation

DBPSK,DQPSK,8-DPSK,16-DPSK

 

Number of channels

2

 

Channel spacing (Hz)

200

 

Bandwidth (Hz)

450

 

Symbol rate (Bd)

200

 

Coding

Convolutional FEC code

Demodulator Settings

Demodulator

Pactor II

 

Min. burst length (s)

0.300

 

Max. burst length (s)

3.400

 

Min. pause length (s)

0.035

 

Min. burst SNR (dB)

0

Features

Demodulation

yes

 

Recognition

yes

 

Decoding

yes

 

Automatic Polarity Adjustment

no

 

Combination with other modems (modem list)

yes

Tuning

The tuning frequency is the center of the signal

Table 159: PACTOR II

Figure 55: PACTOR II Spectrogram