Answer:
Red boxes are commonly manufactured from modified Radio Shack tone
dialers, Hallmark greeting cards, or made from scratch from readily
available electronic components.
To make a Red Box from a radio shack tone dialer, open the dialer and
replace the crystal (the largest shiny metal component) with a crystal
close to 6.5Mhz. The most popular choice is the 6.5536Mhz crystal.
When you are finished, program the P1 button with five *'s. That will
simulate a quarter tone. Note that the tone dialer you start with
must have programmable buttons.
dialers, Hallmark greeting cards, or made from scratch from readily
available electronic components.
To make a Red Box from a radio shack tone dialer, open the dialer and
replace the crystal (the largest shiny metal component) with a crystal
close to 6.5Mhz. The most popular choice is the 6.5536Mhz crystal.
When you are finished, program the P1 button with five *'s. That will
simulate a quarter tone. Note that the tone dialer you start with
must have programmable buttons.
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