CHIRP

# Query filter strings

CHIRP supports filtering the memory view according to a query string. This can be used to temporarily limit the memories being displayed to make it easier to find things.

<img src="clipboard-202412110848-ii0m9.png" width=800/>

If you type a simple string (without spaces or special characters) CHIRP will search the frequency, name, and comment fields for that string. However, if you use a specific query language, more complex filtering is possible.

|Operation |Example |Result |

|-----------------------------|-------------------------------|------------------------------------------------------------|

| Find name containing string | `name~"mountain"`             | Display memories with "mountain" in the name    |

| Find exact name             | `name="W1AW"`                 | Display memories with name exactly matching "W1AW"   |

| Find specific frequency     | `freq=146.52`                 | Display memories with frequency of 146.52MHz           |

| Find range of frequencies   | `freq<144,148>`               | Display memories with frequency between 144-148MHz |

| Find only D-STAR memories   | `mode="DV"`                   | Display memories that have "DV" in the mode column |

| Find only airband memories  | `mode="AM" and freq<118,134>` | Display memories that are AM and between 118-134MHz |

## Exact match

Using the `=` operator, you can match a specific field to an exact value. For fields like `name`, `comment`, `tmode`, etc this will be a quoted string (i.e. `"foo"`). For `freq`, `rtone`, `ctone`, etc, this will be a number (either floating-point or integer).

## Regex Match

Using the `~` operator, you can match a specific field to a regular expression (as a quoted string). This only works on string fields like `name`, `comment`, etc.

## Range

Using the syntax `<LO,HI>` you can search numerical fields for being within a range. This works for things like `freq` and `rtone`, etc.

## Multiple expressions

Boolean operators `AND` and `OR` are allowed, as well as using parenthesis around a sub-expression.