[Elecraft] Straight Key on my K2

[David Pratt]

Right Tom, I have done that...  Joined the dit and dah connections both
to the hot side of the straight key and removed the 1N5821 Schottky
diodes completely.  And yes, I still have the problem of occasional
dah-di-dah-di-dahs when pressing the key.

As you suggest, that would appear to rule out any problem with the
diodes. (I have previously tried numerous combinations and types of
matched pairs of diodes.)

So what next?  Does that suggest a problem with my Rev 2.04 firmware
(I/O Rev 1.09)?

Thanks

David


In a recent message, Tom Hammond <n0ss at earthlink.net> wrote ...
 >We're going to try bypassing the diodes completely and see if you can
 >key properly...
 >
 >Using a couple clipleads (if you  have them), connect one end (each)
 >directly to the TIP and RING terminals on the KEY plug, then clip both
 >of the other ends of the clipleads to the hot side of the key. Leave
 >the grounded side connected to the sleeve of the plug.
 >
 >If you can now key the K2 and not have alternating DIT/DAHs, then the
 >problem is in diodes, or at least one of them. If you still get
 >alternating DIT/DAHs, then the problem is in the K2 or in the firmware,
 >as AdEt is not functioning as it should.