CW Mode Options

These options configure direct command-line transmissions using QRSS, FSKCW, or DFCW.

Mode Selection

• --mode <WSPR\|QRSS\|FSKCW\|DFCW>
  Select transmission mode.

• --cw-message <text>
  Message to transmit in CW-based modes.

• --cw-base-frequency <freq>
  Base RF frequency. Supports Hz, kHz, MHz, GHz suffixes.

• --cw-shift-hz <hz>
  Frequency shift for FSK-based modes.

• --cw-dot-seconds <seconds>
  Length of a Morse “dot”.

Timing

• --cw-start-minute <0-59>
  Start minute for scheduled transmissions.

• --cw-repeat-minutes <minutes>
  Interval between transmissions.

Spacing

The --cw-* gap options are shared by QRSS and FSKCW. DFCW uses its own gap options.

• --cw-intra-element-gap <multiple>
  QRSS/FSKCW gap between elements of a character.

• --cw-inter-character-gap <multiple>
  QRSS/FSKCW gap between characters.

• --cw-inter-word-gap <multiple>
  QRSS/FSKCW gap between words.

• --dfcw-intra-element-gap <multiple>

  DFCW gap between equal-duration dot and dash symbols (default: 0.333333 dot lengths).

• --dfcw-inter-character-gap <multiple>

  DFCW gap between characters (default: 1.0 dot lengths).

• --dfcw-inter-word-gap <multiple>

  DFCW gap between words (default: 3.0 dot lengths).

Envelope Control

• --cw-fade-shape <none\|linear\|raised_cosine>
  Shape of amplitude transitions.

• --cw-fade-in-ms <ms>
  Fade-in duration.

• --cw-fade-out-ms <ms>
  Fade-out duration.

• --cw-fade-slice-ms <ms>
  Resolution of fade steps.