[Elecraft] KX3 and external-power

[Walter Underwood]

What calibration is this? The Elecraft assembly manual does not require any calibration.  I built my KX3, then fired it up on the air.

I do recommend  connecting with the Elecraft KX3 Utility, saving the config, then updating to the latest firmware.

wunder
K6WRU
CM87wj
http://observer.wunderwood.org/ (my blog)

On Apr 10, 2015, at 8:38 PM, jsodus at comcast.net wrote:

> I've completed the assembly of my KX3 and put 8 new batteries (alkaline) in it to see that it powered-up ok, which it did. 
> I just felt more comfortable doing that to power-up the new unit rather than using a bench power-supply. 
> 
> I'm ready now to do the next phase "Calibration" with the KX3-Utility code. 
> However, Cady's book for the KX3 suggests that the "Calibration" should be done with a stable bench power-supply. 
> 
> I wondered if I must remove the internal batteries prior to connecting up the bench power-supply. 
> (I do not have the KXBC3 battery-charger option.) 
> I did not find an answer in the manual or Cady's book nor did searching through the schematics yield an answer for me. 
> 
> The problem is basically academic because the batteries will be removed with virtually every intent of leaving the KX3 that way permanently. 
> (Of course, that is open to change based on future experience, in which case NiMHs would be installed.) 
> I have my eye on a 12V 7A SLA to supply external power when operating portable. 
> A bench power-supply would be used when operating at my desk. 
> 
> TIA for any replies. 
> 73 Jerry KM3K 
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