Front selector switch & built in audio source.
photo number one is the micro switch mounting plate, constructed from sheet Aluminium the purpose of this plate is to hold a micro switch & associated wiring in place at the rear of the multy selector switch which is operated from the front of the faceplate with the switch lever
The purpose of the multi switch in this model is to switch on & off a sound source which is built in to the model the sound source in this model is a mini hand held voice recorder,
when the selector switch on the front panel is switched to the top position a lever at the back of the shaft comes in to contact with a micro switch this action completes an electrical circuit allowing the built in batteries in the voice recorder to complete the circuit and allow the recorder to operate and produce an audable sound in a speaker at the base of the "Radio" ( the small speaker in the recorder is by passed )
photo number one is the micro switch mounting plate, constructed from sheet Aluminium the purpose of this plate is to hold a micro switch & associated wiring in place at the rear of the multy selector switch which is operated from the front of the faceplate with the switch lever
The purpose of the multi switch in this model is to switch on & off a sound source which is built in to the model the sound source in this model is a mini hand held voice recorder,
when the selector switch on the front panel is switched to the top position a lever at the back of the shaft comes in to contact with a micro switch this action completes an electrical circuit allowing the built in batteries in the voice recorder to complete the circuit and allow the recorder to operate and produce an audable sound in a speaker at the base of the "Radio" ( the small speaker in the recorder is by passed )
Motion of front selector switch,
moving from left to right, when selector switch reaches the position on the far right the micro switch switches on the voice recorder, which will play back pre recorded sound's ( morse code or voice radio
" chatter " ) the lower photos shows the switch action in reverse.
the selector switch will just "click" through its three selector positions not carrying out any function,
but when it arrives at position three it is one step away from switching on the recorder
OFF ON
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the selector switch have a shaft moulded to it, this shaft then projects in to the area to the back of the micro switch mounting plate, fastened to the end of this shaft is a right angle arm when the selector switch is switched from OFF to On the arm comes in contact with the micro switch the micro switch is switched on this action makes the electrical circuit on the recorder which then plays the sound through the built in speaker at the base of the "Radio"
OFF ON
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two grids drilled out to accommodate the speakers.
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rear view of " Radio" case. left speaker for Morse out put & right speaker for
audio out put.
audio out put.
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Mounting for recorder.
recorder fitted to mounting. the brass lever fitted to the rewind button can be acessable out side the case for the purpose of rewinding the tape. ( to rewind tape pull lever.)
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sliding panel on the side of case, this provides an access point to operate the lever for rewinding the tape.
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replay lever is accessible through side opening.
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