Wayne and the group Thank you for the new KX3 experimental firmware. I downloaded it tonight and quickly decided in my city environment the NOR setting was better for listening to weak stations on the low end of the broadcast band as I was getting some type of interference from higher in the band with the 160 meter selection. I am glad we have the option to set it either way and I am still pleased as always with the ability to listen to the broadcast band for news when I am camping.
I brought up my old deep discharge battery and am extremely please with the way it now works with the KX3 and the KXPA100. The KX3 was going down to 10.7 volts at 100 watts with about .9 volts of cable voltage loss. My digital meter was going down to 11.6 volts at the battery and after I transmitted a while the voltage started going back up which is typical of the discharge of a deep cycle battery. I maintained batteries for 35 years for the phone company and every year we ran a similar test on those big batteries. The KX3 and the KPA100 both were cool to the touch after a test on the dummy load sending CW for a long time. I know I am going to have a lot of nice contacts from my camper this summer. I feel it works as well or better than my K2/100 did and I used that in the camper for 12 years. Thanks again for the new firmware and hope to work many of you from my camper this summer. 73 Ken W0CZ w...@i29.net Sent from my iPad > On Jan 11, 2014, at 3:17 PM, Wayne Burdick <n...@elecraft.com> wrote: > > Hi all, > > If you're powering the KX3 and a KXPA100 from the same large 12-V battery, > and you've had a problem with the KX3 dropping power from QRO levels to 5 W, > please contact me directly. I have an experimental firmware fix for this. > > This only applies if: > > - the KX3 is connected to the amp via the special control cable > > - MENU:PA MODE set to ON > > - the power control is set higher than 10 W > > In this case (with the amp in-line), there was a bug where a drop in supply > voltage to 11.0 V or lower would kick the KX3+amp into QRP mode (with the amp > bypassed). > > A key-down drop below 11 V is not unusual with a moderately depleted 12-V > battery running a QRO station. With the new firmware, the user can continue > to use the amp anyway, at some appropriate power level. Of course you > shouldn't try to get the full 100 W output in this case. For example, if the > voltage is in the 11-V range on key-down, I recommend not using more than > about 40-50 W. At 10 V (which isn't even safe to us with some 12-V > batteries), you're better off using QRP levels and setting PA MODE = OFF to > conserve battery power. > > 73, > Wayne > N6KR > > ______________________________________________________________ > 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
