Corky,

It is doubtful that a firmware upgrade is to blame. If it were the firmware, we would have seen many reports of similar failure. What did you plug/unplug since it worked last? A firmware upgrade does not change settings in the K3.

Do you have the Line-in and Line out cables reversed? The Signalink Line Out goes to the K3 Line In, and the K3 line out goes to the Signalink Line in.

Connect the Signalink Line out to an audio amplifier and from your data mode application, do a "transmit" - do you hear audio tones? If not check your software and the Signalink.

73,
Don W3FPR

On 3/5/2017 3:04 PM, CAS wrote:
I have been using my K3 with a SignaLink USB for some time without
issue. This last week I had everything working and then did a firmware
upgrade to the latest version. I now get nothing in or out of the
Line-In/Line-Out ports on the back of the radio. The microphone seems to
work fine, but I am no longer able to work digital using the ports on
the back

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