Best to ask MFJ how they detect TUNE mode in the K2, and once you
have that answer, we can tell you how to construct the cable for
both the PC and MFJ ATU connections.
Based on the MFJ manual, the 993B is looking for specific protocol
from the *TUNER* connection of the Kenwood or Yaesu transceivers or
a contact closure out/contact closure in ("start"/Tuning") of the
Icom AH-3/AH-4 tuners.
None of Elecraft's transceivers are compatible with those signaling
protocols. Elecraft's transceivers/tuners communicate using Elecraft's
proprietary "Aux Bus" (protocol).
I doubt that there is any way to automate the K2/MFJ-993B interaction.
73,
... Joe, W4TV
On 2020-07-05 11:41 AM, Mike Kopacki wrote:
I plan on calling them tomorrow (Monday).
Thanks,
Mike NJ2OM
On Jul 5, 2020, at 11:38 AM, Don Wilhelm <[email protected]> wrote:
Mike,
It is more complicated than that - there is no TUNE information on the RS-232
lines but if the MFJ ATU has a signal to activate TUNE on the K2, and I do not
see any reference to a TUNE signal in the Kio2 Programmer's Reference manual.
Best to ask MFJ how they detect TUNE mode in the K2, and once you have that
answer, we can tell you how to construct the cable for both the PC and MFJ ATU
connections.
73,
Don W3FPR
On 7/5/2020 9:08 AM, NJMike wrote:
In order to put the MFJ-993B automatic antenna tuner into TUNE mode from the
radio, an interface cable is required.
MFJ has cables for the major radio brands. I’m not sure if it’s even
possible for the K2 since I’m already using the RS-232 port to interface
with the laptop.
The cable, I believe, does nothing more than initiate TUNE mode on the tuner
when TUNE is initiated on the radio.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
