The leather-covered straps are bound together by means of two clamps which permit the head band to be adjusted to suit the wearer. The clamps, C, are made from 1/16-inch brass 3/8 inch wide. Their form and construction may be best understood from the drawing. A small screw eye is cut in half and soldered to the center of the upper side of the clamp so that the receiver cord may be passed through the eyelet, E.
The telephone receivers should be connected in series by means of a flexible telephone cord.
CHAPTER XVII. OPERATION.
The first essential in order to manage a wireless station, after learning the construction and handling of the instruments, is to acquire a thorough knowledge of the telegraph codes.
The two codes in use in wireless service are the Morse and the Continental. They are given below.
In some cases, the intending wireless operator has had some experience with a Morse sounder and then it is merely a matter of transition and of accustoming the ear to a new sound. However it is always best to learn the Morse code first as Continental is merely an adaptation in which no space characters appear.
A beginner may learn to receive most easily by communicating with another person to whom it is also new. They should first memorize all the letters of the code and practice transmitting before commencing any communication.
It is a great mistake for a beginner to start by writing down the dots and dashes as he receives them on paper. He should make an effort to translate them and set the characters and words down directly. This at first will sacrifice speed but will make a better operator and enable one to become proficient sooner than if he begins otherwise.
In case two complete sets of wireless apparatus are not convenient, one may learn to read from a buzzer connected to a key and a battery. The signals may be read directly from the sound of the buzzer itself, but if a pair of telephone receivers are connected across the terminals, a sound will be produced in the phones similar to that of a wireless receptor.
In sending, avoid a short, choppy or jerky style and handle the key with a light but firm touch. Keep the dots and dashes firm and of the proper relative length, as also the spaces between letters and words.