SITOR (SImplex Teletype Over Radio) is a system for transmitting text messages. It was developed in the 1960s by Koninklijke TNT Post as an improvement over radioteletype (RTTY). Although it uses the same frequency-shift keying (FSK) modulation used by regular RTTY, SITOR uses error detection , redundancy, and/or retransmission to improve ...

2021年11月25日 · SITOR-A is one of two modes of SITOR, which stands for Simplex Teletype Over Radio. Based on CCIR Comité Consultatif International pour la Radio (Predecessor of the ITU-R) 476-4. It was formerly used to transmit maritime short messages, however the maritime industry is gradually moving away from using this mode in favor of PACTOR.

2021年11月24日 · SITOR-B is one of two modes of SITOR (Simplex Teletype Over Radio). NAVTEX and AMTOR-FEC Forward Error Correction /AMTOR-B uses the SITOR-B protocol. Based on CCIR Comité Consultatif International pour la Radio (Predecessor of the ITU-R) 625

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Basic form of SITOR, also kown as SITOR-ARQ, using detection based on ARQ. In the CCIR Recommendation 476-3 it is defined as mode A. It uses its own specific alpha­bet which is described below. Each character is defined by 7 bits, consisting of four 1s and three 0s. This means it has a MARK/SPACE ratio of 4:3.

2016年1月19日 · Now to Sitor B (Simplex Teletype Over Radio Mode B), another non-voice mode we can use to decode WLO transmissions. Sitor B sounds a lot like RTTY to the human ear, but requires different decoding software.

2022年7月15日 · The NAVTEX message format is layered on top of SITOR (SImplex Teletype Over Radio) mode B. Since SITOR-B uses basic forward error correction (FEC), NAVTEX messages are somewhat robust to interference and in weak signal situations. CCIR476 Character Encoding. CCIR476 is a 7-bit character encoding similar to 5-bit Baudot code.

SITOR (SImplex Teletype Over Radio) is a system for transmitting text messages. Although it uses the same frequency-shift keying (FSK) modulation used by regular radioteletype (RTTY), SITOR uses error detection, redundancy, and/or retransmission to improve reliability.

SITOR is a system for transmitting text messages. It was developed in the 1960s by Koninklijke TNT Post as an improvement over radioteletype (RTTY). Although it uses the same frequency-shift keying (FSK) modulation used by regular RTTY, SITOR uses error detection, redundancy, and/or retransmission to improve reliability.

Sitor Situmorang (2 October 1924 – 21 December 2014) was an Indonesian poet, essayist and writer of short stories. Situmorang was born in Harianboho, North Sumatra, and educated in Jakarta.