Re: [Elecraft] KX3+KXPA100 operation improved when running from a 12-V battery

2014-01-15 Thread Kenneth A Christiansen
Hi to the group. I hope the group wasn't thinking my test conditions were my recommendations for running the KX3-KXPA100 station. I purposely set it up under marginal conditions to test the new software and originally to test the old software. The battery is over 4 years old and I may replace

Re: [Elecraft] KX3+KXPA100 operation improved when running from a 12-V battery

2014-01-14 Thread Kenneth A Christiansen
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

Re: [Elecraft] KX3+KXPA100 operation improved when running from a 12-V battery

2014-01-14 Thread Wayne Burdick
Thanks for the report, Ken. At lower voltages, especially in voice modes, you should consider dialing back power output to preserve the amplifier's headroom. For example, if the supply is dipping below 11 V, I back the power down to about 50 W, just to be safe. This is only a 3-dB drop in

Re: [Elecraft] KX3+KXPA100 operation improved when running from a 12-V battery

2014-01-14 Thread Jim Brown
On 1/14/2014 7:36 PM, Wayne Burdick wrote: At lower voltages, especially in voice modes, you should consider dialing back power output to preserve the amplifier's headroom. For example, if the supply is dipping below 11 V, I would work on raising the battery voltage, and on reducing the IR

[Elecraft] KX3+KXPA100 operation improved when running from a 12-V battery

2014-01-11 Thread Wayne Burdick
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