Some repeaters need the tones in both receive and transmit modes. Tone squelch uses a tone to open the squelch

Jock  KC6IIH

Sent from my Samsung Galaxy Tab   JOCK  KC6IIHGaryErrol garyerrol@comcast.net wrote:While I know what CTCSS and DCS tones are and how to program them, I don't know what the differences between Tone vs Tone Sql & DTCS Code vs DTCS Rx Code are. Can someone please explain the differences?

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