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CTCSS Encoder / Decoder & DCS Encoder / Decoder

CTCSS Encoder Decoder & DCS Encoder Decoder: TDS-1


Midian's TDS-1 is an encoder and decoder of CTCSS and DCS tones. These include the 38 CTCSS tones plus splits and 106 DCS codes, as well as custom tones. Features include reverse burst squelch tail elimination, time-out timer, penalty timer, and more. The TDS-1 supports Motorola's Private Line (PL) and Digital Private Line (DPL), as well as Channel Guard and Digital Channel Guard.


  • Busy channel lockout with busy tone
  • Can encode & decode the 38 standard CTCSS tones, 13 split tones & custom CTCSS tones
  • Can encode & decode up to 64 different CTCSS & DCS codes using binary switching
  • Encodes & decodes any DCS code from 000 - 777
  • Programmable time-out timer & penalty timer
  • Programmable via Midian's KL-4F Programmer
  • 3 year warranty


The TDS-1 is used to quiet the user's radio when other users with different CTCSS & DCS codes are talking on the system or to allow access to a repeater.


The TDS-1 can be adapted to most any two-way radio.

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Product Manuals

TDS-1 Product Manual