Sound Box
The sound box is for producing appropriate sound effects for the radio display ,
It is constructed to look like an external speaker,
In this case one sound source is an ipod nano this have a dedicated sound track of morse code , The out put from the ipod goes in to an amplifier which amplify the sound to a controllable level, this amplifier can be switched on and off from a switch on top of the unit,
The second sound source is a miniature dictaphone voice recorder on to which is recorded appropriate voice radio chatter,
The advantage of the tape recording is that where silent gaps occur ( where no sound is recorded ) this will give the effect ( when the unit is switched on ), that intermittent communication's are taking place.
It is constructed to look like an external speaker,
In this case one sound source is an ipod nano this have a dedicated sound track of morse code , The out put from the ipod goes in to an amplifier which amplify the sound to a controllable level, this amplifier can be switched on and off from a switch on top of the unit,
The second sound source is a miniature dictaphone voice recorder on to which is recorded appropriate voice radio chatter,
The advantage of the tape recording is that where silent gaps occur ( where no sound is recorded ) this will give the effect ( when the unit is switched on ), that intermittent communication's are taking place.
The sound box can be seen here in center top of picture.
