K3, A calibration question

[Richard Fjeld]

How much voltage adjustment change can be made to a power supply without the need to re-calibrate a K3?  

(I did not see this answered in the manual)

Rich, n0ce
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[Don Wilhelm-4]

Rich,

As long as the voltage is within the spec limits the answer is that no
additional calibration should be required.
\
73,
Don W3FPR

On 12/25/2012 4:00 PM, Richard Fjeld wrote:
> How much voltage adjustment change can be made to a power supply without the need to re-calibrate a K3?
>
> (I did not see this answered in the manual)
>
> Rich, n0ce
>

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[Fred Townsend-2]

Rich I'm not sure which calibration you are referring too but as long as you
stay with the specified input voltage range, all calibration will not
change.
73, Fred AE6QL

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Richard Fjeld
Sent: Tuesday, December 25, 2012 1:00 PM
To: elecraft posting
Subject: [Elecraft] K3, A calibration question

How much voltage adjustment change can be made to a power supply without the
need to re-calibrate a K3?  

(I did not see this answered in the manual)

Rich, n0ce

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[Richard Fjeld]

(Sorry Don, the first one got sent to you instead of the user group)

Thanks Don, and Fred AE6QL,

Your answers suggest it has it's own regulation built in, which I didn't want to assume.   So, I should be able to ignore my key down voltage for this question.  (I do intend to beef up my wire gauge.)

My K3 shows 15.4 amps at key down in CW at 100 watts with a P3 attached.  A dummy load was used.

How does that compare with your K3's, please?  

Rich, n0ce
  ----- Original Message -----
  From: Don Wilhelm
  To: Richard Fjeld
  Cc: elecraft posting
  Sent: Tuesday, December 25, 2012 7:35 PM
  Subject: Re: [Elecraft] K3, A calibration question


  Rich,

  As long as the voltage is within the spec limits the answer is that no
  additional calibration should be required.
  \
  73,
  Don W3FPR

  On 12/25/2012 4:00 PM, Richard Fjeld wrote:
  > How much voltage adjustment change can be made to a power supply without the need to re-calibrate a K3?
  >
  > (I did not see this answered in the manual)
  >
  > Rich, n0ce
  >
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[ke9uw]

At 100 watts according to the K3, with 12.6 vdc (drops down from 13.8 vdc with key down CW) I get 19.5 adc according to the Hamsource EZ-meter.