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Part used in projects
Shadyswitch Sender Digit Register V1.0
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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Shadyswitch Ring Timer v1.0
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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Shadyswitch Announcement Card V2.0
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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Shadyswitch tone plant v1.0
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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Shadyswitch Sender Logic Module v1.0
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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Shadyswitch relay module
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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Shadyswitch 3-Pathfinder v1.0
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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Shadyswitch Imprecise Tone Plant v1.0 NONWORKING
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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Shadyswitch Sender Timing Module V1.0 repaired
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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Loop detector 5V logic high
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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Shadyswitch tone plant v1.1
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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Shadyswitch DTMF Receiver V1.0
NorthwesternTelephoneandTelegraph
NorthwesternTelephoneandTelegraph
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