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Joined: Dec 2011
Posts: 12
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OP
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Joined: Dec 2011
Posts: 12 |
Im thinking of building a complete new K403A, I have the passive Transformer/capacitor/resistor circuit used in the 451B Music on hold board but not the 403 MOH board. I could etch a new plugcard but for just a prototype, id build it on perfboard and use a plug connector. There are tons of digital music sources on ebay for $25-ish to drive it with.
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