11.5 volts is where you should start seeing LO BATT on the K2 display. I don't recall a audible tone, but it's possible.
The K2 alone is spec'd down to 9.5 VDC supply, but at reduced output as follows: 9.0 V min for 2 watts out 9.5 V min for 5 watts out 10.0 V min for 7 watts out 10.5 V min for 10 watts out While you may be able to get more than the indicated power out for a given voltage, IMD will increase or other issues may crop up. The manual says to "monitor transmitter output signal". The KPA100 is spec'd for a minimum voltage of 11.5 volts. AFAIK, the warning level is not adjustable. 73, Ron AC7AC -----Original Message----- From: Elecraft [mailto:[email protected]] On Behalf Of Chris Kimball Sent: Friday, November 27, 2015 7:19 AM To: [email protected] Subject: [Elecraft] K2/KPA "Low Batt" warning and beep I'm checking my K2/KPA rig as the battery runs down. I'm getting a sporadic "low Batt" indication on the screen and a beep every once and a while during transmit. The supply voltage under load is still about 11.5 V. Is this coming from the K2 or the KPA? Is the level at which this warning occurs settable? Is this a warning to be concerned about? The K2 is said to operate to 10V or so. Is the KPA likely to go to sleep before then? Thanks, Chris NQ8Z -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-KPA-Low-Batt-warning-and-beep-tp7610 871.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
