CHIRP

h1. Tone Modes in CHIRP

h2. ""

An empty Memory.tmode means that no tone is transmitted or received

h2. Tone

A Memory.tmode of "Tone" means that the radio will transmit a single sub-audible tone, according to the Memory.rtone value. In this mode, the receiver is carrier squelch.

h2. TSQL

A Memory.tmode of "TSQL" means that the radio will transmit a sub-audible tone, according to the Memory.ctone value. In this mode, the receiver uses tone squelch with the same value of Memory.ctone.

h2. DTCS

A Memory.tmode of "DTCS" means that the radio will transmit a DCS code, according to Memory.dtcs. In this mode, the receiver uses DTCS squelch with the same value of Memory.dtcs.

h2. Cross

A Memory.tmode of "Cross" means that the radio will use an asymmetric squelch configuration according to the value of Memory.cross_mode:

h3. Tone->Tone

A cross_mode of "Tone->Tone" means the radio will use sub-audible tones for transmit and receive, the values of which are Memory.rtone and Memory.ctone respectively.

h3. Tone->DTCS

A cross mode of "Tone->DTCS" means that the radio will use a sub-audible tone for transmit, according to Memory.rtone, and a DCS code for receiver squelch, according to Memory.dtcs.

h3. DTCS->Tone

A cross mode of "DTCS->Tone" means that the radio will use a DCS code for transmit, according to Memory.dtcs, and a sub-audible tone for receiver squelch, according to Memory.ctone.

h3. ->Tone

A cross mode of "->Tone" means that the radio will not transmit a sub-audible tone, but will enable tone squelch on the receiver according to the value of Memory.ctone.

h3. ->DTCS

A cross mode of "->DTCS" means that the radio will not transmit a sub-audible tone, but will enable DCS squelch on the receiver according to the value of Memory.dtcs