Handbook for Light Artillery

by A. B. Dyer

Right, front, right, represent O.

Right, front, right, right, represent R.

Each motion will embrace an arc of 90°, starting from and returning to the vertical.

The long dash (letter "L" and numeral "naught") is distinguished from the "T" dash by a slight pause at the lowest point of dip, and with this exception there will be no pause whatever between the motions required for any single letter.

A slight pause will be made between letters.

At the end of each word, abbreviation, or conventional signal the space signal, or "front" motion, is made, preceded and followed by a pause equivalent to that made between letters.

CONVENTIONAL SIGNALS FOR HELIOGRAPH OR FLASH LANTERN.

To Call a Station.—Turn a steady flash on the station and keep it there until answered by a steady flash. Both stations will then adjust, each on the other's flash. When adjustments are satisfactory, the station called will acknowledge and cut off its flash, and the calling station will proceed with the message.

Adjustment.—If the receiver sees that the sender's mirror needs adjusting, he will turn on a steady flash until answered by a steady flash. When adjustment is satisfactory, the receiver will acknowledge, and the sender will resume his message.