Re: [Elecraft] Performance of the KX2 batt

2016-10-16 Thread John Oppenheimer
Using the DISP voltage, using internal battery, receive is 11.7V and 10W in TUNE is 10.8V. a drop of 0.9V. The receive drop is a tenth or two, or round down to a 1V total voltage drop during 10W transmit. The minimum battery voltage would then be 11V or 3.67V per cell. Looking at representative

Re: [Elecraft] Performance of the KX2 batt

2016-10-16 Thread Bill Frantz
The Lithium family of battery chemistries all drop in voltage as battery capacity is used. At lower voltages, the KX2 IMD goes up, so the firmware reduces power output to maintain a clean signal. The choices seem to be: Keep going with 5W and enjoy QRP. Pack up the radio, go home, and

Re: [Elecraft] Performance of the KX2 batt

2016-10-16 Thread Doug Turnbull
Of Howard Sherer Sent: 16 October 2016 12:31 To: elecraft Subject: [Elecraft] Performance of the KX2 batt I have been running my KX2 with the Elecraft supplied batt pack for the past two weeks and have a question for others using the same. I can run the KX2 at 10W only till I have used 1.12 AH

Re: [Elecraft] Performance of the KX2 batt

2016-10-16 Thread Chip Stratton
The unloaded voltage of your pack, and the number of amp-hours used are consistent with each other, you are about half-way through the usable amp-hours of the battery, which has a 2.3 amp-hour rated capacity. Not sure exactly what to expect about the voltage drop under load, but I am not surprised

[Elecraft] Performance of the KX2 batt

2016-10-16 Thread Howard Sherer
I have been running my KX2 with the Elecraft supplied batt pack for the past two weeks and have a question for others using the same. I can run the KX2 at 10W only till I have used 1.12 AH of the batt capacity and its key up V=11.0 and key down is 10.3. At this time I can only run the KX2 at 5W.