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- 2016A
- SCAN DEFEAT DURING XMIT FOR KDK 2016A
-
- Anyone with a KDK-2016A has either fixed this or learned to live with
- it, but here goes anyway:
-
- The 4-channel memory scan on the KDK 2016A is designed to be active
- whenever a) the memory channel switch is in the "scan" position and b)
- when the RCV LED on the front panel is not lit. To keep the receiver
- tuned to an active channel once it's hit, the same signal that drives
- the RCV light is picked off on its path via a white/yellow wire from
- P24 of the main board to the display unit; the signal also goes to P9
- on the synthesizer unit, where it is RC shaped and fed to the base of
- Q12, whose collector circuit stops the scan when the LED comes on.
-
- The problem is this: if you decide to talk to someone you hear on an
- active scanned channel -- and forget to first move the switch from
- the scan position -- as soon as you key the mike, the RCV LED goes out
- (doesn't that make sense?) and bingo! scanning begins again. The
- effect of this is to spread yourself around a bit -- 1/3 sec on one
- channel, 1/3 on another.... Kind of a primitive "spread-spectrum" but
- not guaranteed to win friends on the other repeaters you may have in
- memory. If you notice the frequencies flashing by on the display, you
- can catch this in time to save yourself some embarrassment, but there
- is another workaround. I installed this mod about ten years ago, and
- it's still doing fine.
- CONTINUED IN FILE 2016A.1