[Elecraft] New 30A power supply on Elecraft order form

Michael Gillen via Elecraft elecraft at mailman.qth.net
Wed Apr 15 13:03:00 EDT 2015


Hello Wayne,
Will you be updating page 8 of the Owner's Manual to reflect this change? The OM says 13.8v and nothing about measuring it at the DC jack on key-down. However that sounds like a fun experiment.
73,MichaelKK6RWNnew K3 owner serial 8989
      From: Wayne Burdick <n6kr at elecraft.com>
 To: Edward R Cole <kl7uw at acsalaska.net> 
Cc: Elecraft at mailman.qth.net 
 Sent: Wednesday, April 15, 2015 8:37 AM
 Subject: Re: [Elecraft] New 30A power supply on Elecraft order form
   

On Apr 15, 2015, at 7:48 AM, Edward R Cole <kl7uw at acsalaska.net> wrote:

> One question is how low voltage can be adjusted.  Amps are designed for 12.0 volts.

Ed,

All Elecraft 100-W amplifiers are designed for optimal performance at about 14 V (as measured at the DC jack on key-down). This includes the K3's and K2's internal 100-W amps as well as the KXPA100. They will certainly run from lower voltages -- down to about 10.5 to 11 V -- but for home use, we recommend setting the DC supply to 14.0-14.2 V. They'll run from as high as 15 V, though again, around 14 V optimizes power output, IMD levels, and efficiency.

73,
Wayne
N6KR




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