RRC 1258 Support in English > Hardware, Cabling, Installations
K3S & K3/0 & wsjt-x - do I need COM2?
k7fu:
Instead of trying to run wsjt-x at the control site, I bought a NUC to put at the radio running Ubuntu 18.04LTS. I have a K3 with KIO3B upgrade, and a KPA1500.
I can control the KPA1500 with my NUC just fine. Unfortunately, I can't talk to my K3 at all. I'm jockeying around with the COM2 settings and I could use some help to try to get the local NUC (remember, it's at the radio side, not the control side) to talk to the K3.
I was also thinking if this is not possible, can I just disconnect COM2 from the RRC-1258MkIIs and just connect the RS-232 directly to the NUC? Does the RRC-1258Mk2IIs need COM2 at all?
Thanks for any help. I'm trying options one by one and it's driving me nuts. I've already bought a copy of Win10Pro before I realized the problem wasn't Win10 (tried my laptop) but was with the serial port. I'd rather not waste hundreds more USD to figure this out.
oz1rh:
Hello,
>Instead of trying to run wsjt-x at the control site, I bought a NUC to put at the radio
Why are you making it so difficult for yourself to run WSJT-X? Just connect your Elecraft K3/0 Mini to your pc at your control site and run WSJT-X.
Unfortunately there is an error in the K3/0 Mini, as input and output (mike and speakers) are reversed both in the USB audio device and the two 3.5 mm Mike and Speakers ports at the left side. This means that the USB audio device can't be used, but the Mike and Speakers ports works for WSJT-X well when connected reversed by wires to your pc. I do my FT8 in this way.
I suggest more owners of K3/0 Mini make a request to Elecraft for having this error corrected at least in the USB audio device.
Regarding COM2 on the rear panel of the RRC-1258 it should be connected to the RS232 port on the K3S (or P3), so the COM2 of the Remoterig box is in use. However COM1 on the front panel of the RRC-1258 is not used by Remoterig and can be used for your KPA1500.
73, Palle, OZ1RH.
dj0qn:
Use my CAT checklist to use COM1. Here is a recent post:
http://www.remoterig.com/forum/index.php?topic=1662.msg28130#msg28130
Note that you can use CAT on either side, even at the same time.
73,
Mitch DJ0QN / K7DX
k7fu:
Why am I doing this? I want to control my KPA1500 remotely and, at the moment, it appears that to power it on and off I need a USB connection to the KPA1500. To get a USB connection to the KPA1500 I need to have a computer local to my KPA1500. Does that make sense?
As long as I'm putting a computer next to my KPA1500 and K3(S), I might as well run wsjt-x on the computer next to the radio.
No one has answered my question: can I talk to the K3(S) on the radio side using RS-232 with a computer next to the radio while I'm using the RRC-1258 MkII?
Now that I've spent all this money on a new remote computer, etc, it sounds like I can do everything remotely (besides the power on/off). Oh well.
oz1rh:
Power on and off seems easy, see page 23 of the KPA1500 operators manual:
Remote Operation
...
Additionally, the rear panel REM jack enables remote on and off switching: When 12 VDC is applied to the
KPA1500 REM connector, the amplifier is turned on. Removing 12 V turns the amplifier off. Less than 1 mA is
required. The 12V DC OUT jack on the K3/K3s can be used for this function.
73, Palle, OZ1RH.
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