FARGO electronic 7KDAB manual Speed, Amplitude, Sending ‘Prosigns’

Speed

Two different control characters are supported for setting the speed. For normal cadences, the percent sign ( % ) is used to select a speed ranging from 1 to 50 words-per-minute.

For code practice purposes, the inter-character speed may be supplied separately by using the asterisk ( * ) character to select a speed ranging from 1 to 50 words-per-minute.

Note: When the ‘%’ character is used, it will set timing values for both the inter and intra character timing values, so when using the ‘*’ control character, the ‘%’ control setting should precede the ‘*’ control setting.

Amplitude

A character sequence beginning with a up-caret ( ^ ) character denotes a change in amplitude command. The amplitude is an 8 bit linear value and can range from 0 (off) to 255 (maximum).

Sending ‘Prosigns’

To send a prosign such as AR, AS, BT, SK, etc., any number of characters can be enclosed in brackets. The left bracket ( [ )has the effect of reducing the inter-character delay time to one dit time, and the right bracket ( ] ) has the effect of restoring the inter-character delay time to three dit times.

Examples:

The following message sets the pitch to 880Hz, the amplitude to 128 (or half volume), 20WPM for the character timing, and 13WPM for the inter-character timing, then sends “This is a Morse code message”.

~880^128%20*13This is a Morse code message

The following example sends “DE KA9FUR” using a different pitch for each character. Note that the command prior to sending the ‘9’ is terminated using a backslash.

^255%13~1000D~1100E~1200 K~1300A~1400\9~1500F~1600U~1700R

The following example shows how to send a message containing a prosign.

Wx here is sunny [SK]

Send 8 dits like this [HH] or this [IIII] or this [EEEEEEEE]

7KDAB, Version 2.0, 19-Aug-2007 © Vyex LLC, 2003-2007 18