I think the K3 Utility's messages are a consequence of the K3 shutting off unexpectedly.
When the tune button is pressed (simulated by a serial port command), it's followed with a "TQ;" command, which is sent to verify that the transmitter is on. The K3 has turned off, so it can't respond to TQ; That's the "StartTune: Unexpected response" message. If any error is detected during calibration, the K3 Utility attempts to restore the K3 to the state it was in before calibration started. The K3 Utility sent a command to start the transmitter, so it tries hard to shut off the transmitter. It loops about 10 times on an RX; / TQ; query to verify that the transmitter shut off. No response was received to the TQ; command in any of 10 attempts. That's the "StopTune: Unexpected response to TQ;" message. Finally the K3 Utility attempts to restore everything it changed in preparation for calibration. It attempted to restore the KAT3 to its original setting (BYPASS is used for calibration) and to restore the 50 MHz power setting, which had been changed to 50 watts for calibration. Both of those restore attempts failed, hence the last couple of messages. 73 de Dick, K6KR -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bruce W1UJR Sent: Sunday, January 23, 2011 11:13 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA3 Fails Calibration Hello all, Just installed the KPA3 100 watt PA into my K3. While running through the TX Gain Calibration program in the K3 Utility I received an error. Did the 5 watt cal no problem, but when it was doing the 50 MHz calibrate the K3 shut off and displayed the error below in the K3 Utility window. Thinking this an aberration, I attempted 3 more times, each time the K3 shuts off during the 50 MHZ cal period. I used my nifty Elecraft W1 power meter to measure RF, on all bands 50+ watts, the 5/6 LEDs on the W1 were present on all bands, including 50 MHZ, as the K3 Utility runs the RF test on the 50 MHz, the K3 shuts off. I just upgraded to the new firmware before adding the KPA3, not sure if this is related to that or not. Suggestions? ERROR MESSAGE FROM K3 UTILITY FOLLOWS at 24.930 MHz Calibrating at 29.000 MHz Calibrating at 52.000 MHz StartTune: Unexpected response '' to 'TQ;'. State 139 StopTune: Unexpected response '' to 'TQ;'. State 77 RestoreKAT3: Unexpected response '' to 'MP;'. State 224 RestorePower: Unexpected response '' to 'PC;'. State 87 Cordially, Bruce J. Howes ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
