[Elecraft] MFJ-4103 Switching Power Supply ?

[Bob Nielsen]

On Mon, Oct 20, 2003 at 07:55:30PM -0500, Jeff Burns wrote:
> I am looking at the MFJ-4103 Switching Power Supply to replace my current K2
> power supply. There is not much in the archives about it and e-ham reviews
> are mixed. What experience have others had with this supply? Can its output
> voltage be adjusted for charging the K2 internal battery?
> 

I bought one mainly for use while travelling.  It runs the K2 just fine
and is very quiet.  I measure 13.4 volts on the K2's internal voltmeter
and the KBT2 requirement is 13.6 - 14.0 volts.  After running my K2
with the supply for several weeks, I removed it and checked the battery
voltage, which measured 11.9 volts, so it doesn't appear to put out
quite enough for charging the internal battery.  It's a sealed
assembly, so there is no easy way to increase the output.

Bob, N7XY