CHIRP

h1. Understanding CHIRP's columns

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This document is intended to help users understand the meaning of each column in the channel editor.

h2. Loc

This is the location or "channel number" of the memory. The limits of what can be in this field are defined by your radio.

h2. Frequency

This defines the receive frequency of the channel in Megahertz. If Duplex is set to None, then it is also the transmit frequency of the channel.

h2. Name

This is the alphanumeric label for the memory, as displayed on the front panel. The length and valid characters are defined by what the radio is capable of supporting.

h2. Tone Mode

This sets the mode used to transmit or receive squelch tones (or related selective calling technologies). The following explains what the options means:

• (None): No tone or code is transmitted, receive squelch is open or carrier-triggered.
• Tone: A single CTCSS tone is transmitted, receive squelch is open or carrier-triggered. The tone used is that which is set in the Tone column.
• TSQL: A single CTCSS tone is transmitted, receive squelch is tone-coded to the same tone. The tone used is that which is set in the ToneSql column.
• DTCS: A single DTCS/DCS code is transmitted, receive squelch is digitally tone-coded to the same code. The code used is that which is set in the DTCS Code column.
• Cross: A complex arrangement of squelch technologies is in use. See the definition of the Cross Mode column for details.