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  • en Telephone pulse to DTMF converter MKII

    Description: Major Update: My brother has invested in a 3D printer and he has designed a very nice enclosure you can print for your pcb. Some time ago my brother...
  • en Telephone pulse to DTMF converter

    Description: During a visit to the local recycling station, I stumbled over an old GNT-A F68 telephone, and it was a bargain I could not say no to. When I...

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