[Elecraft] K3/K3S 10W models with KXPA100

[David Guernsey]

Curious if 0H0SS amp will work with K3/10? 73 de Dave KJ6CBS

      From: george fritkin via Elecraft <elecraft at mailman.qth.net>
 To: "w3fpr at embarqmail com" <w3fpr at embarqmail.com>; lstavenhagen <lstavenhagen at hotmail.com>; El <elecraft at mailman.qth.net> 
 Sent: Saturday, February 20, 2016 8:58 PM
 Subject: Re: [Elecraft] K3/K3S 10W models with KXPA100
   
Why not a foot switch 


George, W6GF 

On February 20, 2016, at 6:48 PM, Don Wilhelm <w3fpr at embarqmail.com> wrote:

LS,

The KXPA100 will work with any QRP transceiver that produces a KEYOUT 
signal.
The K3/10, K3S/10 and the KX3 can do that, it is just a matter of a 
proper cable.

The K2/10 does not have a KEYOUT line (although the K2/100 does).  I 
would recommend that you build the circuit shown on Tom Hammond N0SS 
(SK) website at http://www.mmccs.com/mmarc/n0ss/index_k2.html.
Since Tom is SK, no boards are available, but the circuit is easy enough 
to build on perfboard.  Just follow Tom's board layout which is clearly 
identified full scale on his website and connect the wires.  If you have 
the capabilities for etching your own board, the process is easy since 
Tom provided full scale images of his board.
I have built several of the perfboard verions of that circuit and they 
work fine.

73,
Don W3FPR

On 2/20/2016 9:25 AM, lstavenhagen wrote:
> Hi all,
> May be a bit silly of a question, but how well does the KXPA 100 work with
> the K3 or K3S 10W model? Reason I ask is I now have 3 10W rigs (K3, K3S and
> a K2) and may be building a 4th soon (another K2/10). And in the very rare
> event when do go QRO, it would probably be cheaper to just get one 100W amp
> to use with them all than 4 100W amp modules for each.
>
> So my idea is a KXPA100 for my QRO ops with each one. So just curious how
> well this amp works with the K3 and K3S? I would imagine it'd be similar to
> using it with the K2 or ?
>
>

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