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"John R. Copeland" wrote in message
... Understand, though, that the ADF designer made a conscious trade-off between needle slew rate and pointer stability. A tune-up won't make the needle any more responsive than the manufacturer originally intended it to be. I have no access to specifications for Ben's Narco 841 ADF, so I have no idea what slew rate he should expect. I hope some 841 owner will make the test Ben asked about. ---JRC--- Have 841 and service manual. Yes, there's a lag in response following tuning to a station, and more so than I recall in using a KR-86 and ADF-31. The manual does not say directly how this lag is accomplished nor what's normal, and I'll guess it's in the programming of the microprocessor. Fred F. |
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