[Elecraft] band data from the RS232 port while using the USB cable?

[Larry Gauthier (K8UT)]

Steve,

>Apparently when you select USB in the menu, it shuts off the RS232 port?

Not exactly. When using the USB port for CAT control of the radio, the RS232 (RJ45) port becomes a listen-only CAT echo of the responses sent by the K3S to the USB port. I am unfamiliar with the Acom amplifier's requirement for band info, but your amp will track K3S band data under the following conditions:

- A conventional logging program is polling the radio on the USB port for band and frequency (which would result in K3S CAT responses emerging from the RS232 port)

- The Acom is satisfied just hearing that CAT info (IOW - it does not generate it own queries and require responses. The SteppIR controller operates similarly )

-larry (K8UT)
-----Original Message----- 
From: Steve Steltzer via Elecraft 
Sent: Tuesday, September 12, 2017 3:34 AM 
To: elecraft at mailman.qth.net 
Subject: [Elecraft] band data from the RS232 port while using the USB cable? 

Brand new to the K3S. Is there a way to get band data to control an Acom amp on the RS232 port while using the USB cable? I had a lot of trouble with Win10 assigning the radio to ports already in use when I tried using the RS232 port. Going in and manually changing the port number in Device Manager didn't work. Finally got it working using the USB cable and I really don't want to go through all that hassle again to try and get PC comms working using the RS232 port. Apparently when you select USB in the menu, it shuts off the RS232 port?
Steve, WF3T
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