Fellow Elecrafters:
I talked to the West Mountain technical person. He says this
phenomenon is an unintended but inherent feature of the logic
circuitry that drives the LED. It is not an indication that anything
is wrong with either the K2 or the RigRunner.
73,
Steve
AA4AK
At 03:31 PM 11/6/2006, Stephen W. Kercel wrote:
Fellow Elecrafters
I've discussed this phenomenon with the technical support people at
Elecraft, and so far they have no explanation for the following.
I have a K2 powered by an Astron 35 amp power supply. All power
connections and all leads coming out of the K2 are heavily shielded
for RF, and I have a good RF ground.
I recently added a RigRunner DC power strip between the Power Supply
and the K2.
The RigRunner has three LEDs, Red for overvoltage, Green for normal
voltage, Yellow for undervoltage.
Since I'm well within nominal voltage, the green light always shows.
The problem is that when I'm in QRP mode running CW, the green led
gets BRIGHTER in key down than key up. It does not do this in QRO
mode. It does it on various bands and at various VFO frequencies
with a given band, and it does it for both real antennas and a dummy load.
Any thoughts on this would be appreciated.
73,
Steve Kercel
AA4AK
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