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Category:SWIFT-3k

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Revision as of 18:08, 23 September 2026 by Mukhash (talk | contribs) (Created page with "300px|thumb|right|Idle/Stand-by -> Traffic burst '''SWIFT-3k''' (Also known as OFDM, Guest's modem) is a 49-tone OFDM PSK Russian military multi-channel modem. It features scrambled voice/ data-communication at a maximum data rate of 7333 bps. Each subcarrier can transmit up to 44.1 Bd. This waveform is transmitted by the SWIFT-3k and the newer SWIFT-3k-3 modems in use by the multiple operators but Guest Radio operator mostly. These modems were desi...")
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Idle/Stand-by -> Traffic burst

SWIFT-3k (Also known as OFDM, Guest's modem) is a 49-tone OFDM PSK Russian military multi-channel modem. It features scrambled voice/ data-communication at a maximum data rate of 7333 bps. Each subcarrier can transmit up to 44.1 Bd.

This waveform is transmitted by the SWIFT-3k and the newer SWIFT-3k-3 modems in use by the multiple operators but Guest Radio operator mostly. These modems were designed to have many different devices plugged into them to form the modem’s input – most often teleprinters unique to the different military services and civilian agencies that use them, and also, vocoders and speech encipherment systems, but all are transmitted in the same fashion.

A characteristic trait of this signal is the unmodulated leader tone at 1500 Hz (But some people use different ones).


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