Technicals terms R ... T
- Relay station
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Voice repeater station, receives on one frequency and retransmits on other frequency
- RTTY
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Radio Teletype
- PSK31
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Digital operating mode, narrowband text transmission, Radio Frequency range between 3-30 MHz
- Shift
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Difference of frequency between two signals Single Side Band Modulation, operating mode for voice
- SSB
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communication where the carrier and the other sideband is suppressed (much more efficient than AM)
- TNC-Modem
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(Terminal Node Controller), Electronic equipment used for Packet Radio. Performs modulation and demodulation and control functions