Jorge,

Basically, you cannot share an serial RS-232 connection between devices, with one exception: It is possible to have a receive-only device monitor [eavesdrop or "listen in" on] the TXD or RXD signals.  It can't transmit though.

"So now I lost the feature to change antennas automatically when I change bands on the K3"

Do you mean that you changed your connection back from the remoterig to your local equipment and that no longer works?

I use an A/B data switch to switch my K3 CAT port between the local computer when I'm operating with my home antenna, and the remoterig for when I'm operating W7RN remotely.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 11/14/2017 12:23 PM, Jorge Diez - CX6VM wrote:
Hello

At my station, I have Elecraft K3, Bandmaster III, SixPack, CAT cable
connected to K3´s RS232

So when I change bands in the radio, antenna is selected automatically
through CAT cable and band decoder (Bandmaster III)

Today I connected remoterig box, so needed to remove CAT cable to connect
remoterig.

So now I lost the feature to change antennas automatically when I change
bands on the K3

How can I do to share RS232 to have CAT and remoterig at the same time?

thanks,
Jorge
CX6VM/CW5W
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