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It was easier to adapt an NTE-743, which is a similar IC to the MC1310, a Motorola chip. As I fuzzily recall 30 years later, the range of the pilot tone generator on the NTE (an LM-something) could be tuned to 15.7 kHz. But the Motorola IC was designed to be stable at 19 kHz and varying it did not work well.
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"When resistors increase in value, they're worthless" -Dave G Last edited by DavGoodlin; 10-18-2016 at 11:41 AM. |
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Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! |
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