Leigh
Thanks for the response.
you wrote:
I have found a number of confusing issues with the DATA A filters. I
report them to k3support, and eventually they will get fixed. (Some
have already.) If you have reproduceable cases, you can write down the
details and send them in.
I turned these in and the "Line In" problem. Elecraft acknowledged
digital problems. Communication seems difficult on these issues. The
"Line In" got fixed but the rest are waiting for attention. The "CWT
kills digital TX" is the only new factoid.
In the lates release, it seems you can avoid the 1KHz Fc in DATA A by
using low/hi instead of center/width.
I don't have any problems with Data Mode A, except that Dual PB stops
all receive signals. The 1 KHz problem I see is on INPUT to the line in
in AFSK mode. It appears that the mode only accepts audio in at around 1
KHz.
On the laptop trigger mode, you might try setting VOX. With RTTY done
as AFSK, the duty cycle is 100% and I would think that VOX, if they
allow it, would work fine. I have heard incidental reports that VOX
works in PSK mode which has a 50% duty cycle for its idle tone, and
higher for data.
The problem is not in triggering, but in sending FSK RTTY mark and
space. FSK D mode seems to be the only mode that can use Dual PB. That
mode does not accept audio in. You must either send text with the KY
command, key morse code or connect a PC’s I/O line to the “FSK IN” line
on the K3’s AUX I/O connector. (If this signal originates from an RS232
port, it will require RS232-to-TTL level conversion.)
I was hoping that Simon would add keyboard RTTY in addition to keyboard
CW to DM780.
Bob
KD8CGH
KX1, K2, K3 and counting
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