[Elecraft] [K3] Power supply rating

[Wayne Burdick]

A loaded K3 on receive should be under 1.5 A even with all guns  
blazing. If it's 2 amps, try switching options off (starting with the  
sub RX) to see what's up. Another possibility is incorrect resistance  
at the current-sense resistor, so confirm the reading using an  
external ammeter.

73,

Wayne
N6KR

On Dec 28, 2011, at 11:11 AM, WILLIS COOKE wrote:

> My K3 with two receivers draws about 2 amps on receive.  It drew a  
> bit over 1 amp before I installed the second receiver. For transmit  
> at 10 watts I would ad about 3 amps to that.  Two layers of bubble  
> wrap would not be enough for MY K3.  I use a hard side fiber-glass  
> brief case with enough padding to keep the K3 from sliding when I  
> carry it in my truck cab.  For checked baggage on an airline think  
> pad for throwing 10 feet unless you mark is fragile.  In that case,  
> think 20 feet.  Make every effort to avoid possible impact which  
> will push the knobs toward the face of the transceiver.  I would not  
> like to test how much impact the tuning knobs on the encoders would  
> stand.
>
> Willis 'Cookie' Cooke
> K5EWJ & Trustee N5BPS, USS Cavalla, USS Stewart
>
>
> ________________________________
> From: Mike <nf4l at nf4l.com>
> To: Elecraft List <Elecraft at mailman.qth.net>
> Sent: Wednesday, December 28, 2011 7:09 AM
> Subject: [Elecraft] [K3] Power supply rating
>
> I need to take my K3 to class. I'll need just enough oomph to talk  
> to the serial
> port. What would be the minimum rating for a PS? Any suggestions for  
> a small packable
> one?
>
> Would a couple of layers of bubble wrap be sufficient for packing  
> the rig in checked
> buggage?
>
> 73, Mike NF4L
>
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