"Chuck keeps providing riddles for behavior that is a bit different than what I
expected. The original K3 with the KIO3 board exhibits exactly the behavior I
outlined previously. A K3S or K3 with the KIO3B interface behaves the way Chuck
describes. A look at the KIO3B schematic reveals why - it
OK, I've figured out the problem. I took a step back and realized I am
spoiled by the close integration of the K-Line. The reason the FT101 can't
key the amp is because, unless the K3S is turned on, the amp won't leave
STANDBY mode.
Even with the AUX cable disconnected, the amp sits in STANDBY a
This bothered me a bit, so I took a good look at the source code and did some
testing. my results may be interesting.
Chuck’s description with the K3S Not connected to the KPA are correct. When
nothing is connected to the band lines, they are pulled high inside the KPA500.
In the two radio mode
I can confirm this approach works in practice, however one point is
important -
If you turn off the K3S, but leave the KPA on, the discharge time will be
at least ten minutes. I didn't bother testing after that.
If you turn off the K3S, then turn off the KPA, then turn the KPA back on,
it has fu
Chuck keeps providing riddles for behavior that is a bit different than what I
expected. The original K3 with the KIO3 board exhibits exactly the behavior I
outlined previously. A K3S or K3 with the KIO3B interface behaves the way Chuck
describes. A look at the KIO3B schematic reveals why - it h
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