We have a new field test revision of KX2 / KX3 firmware ready that provides much more accurate ATU tuning when the transceiver is operated from low power supply / solar panel / battery voltages.
For example, if you're using 8 NiMH or alkaline batteries, ATU tunes should now be reliable down to as low as 1.1 volts per cell (8.8 V as indicated by the rig's supply voltage display). On our lab radios we get good tunes with most loads even at 1 volt per cell (8.0 V). Results will vary somewhat due to component tolerances.
If you'd like to help us evaluate this new firmware, please email me directly. I'll send copies out to the first few dozen respondents. I'm sure we'll be doing a beta release next week. Everyone will then have access to it.
73,
Wayne
N6KR
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