[Elecraft] K3 Amplifier Keying

[Phil LaMarche]

Wow!  Not being an engineer, I didn't think it would be so difficult.  Many
replies, thank you.  Is something commercially availiable for a non techie
like me?

Phil 


Philip LaMarche 
LaMarche Enterprises, Inc.
www.instantgourmetspices.com

www.w9dvm.com 
800-395-7795 pin 02 
727-944-3226 
FAX 727-937-8834 
NASFT 30210 

K3  #1605

CCA 98  00827
CRA 1701

W9DVM 



-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Paul Christensen
Sent: Wednesday, December 16, 2009 4:50 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 Amplifier Keying

Phil,

You may want to isolate all three key lines using one of the many keying
buffers available.  At an absolute minimum, consider using three steering
diodes if only using a splitting RCA jumper cable from the K3 to the amps,
using one diode (e.g., 1N4007 or if necessary, a Schottky type) for each amp
key line from the K3 with all the cathodes combined together and pointing
back to the K3 amp key line.

The ne-plus-ultra solution for selecting one of three amps from one of three
rigs may be available in the very near future from W8ZR...

http://www.w8zr.com/homebrew/StationPro.htm

Paul, W9AC

----- Original Message -----
From: "Phil LaMarche" <plamarc1 at verizon.net>
To: <elecraft at mailman.qth.net>
Sent: Wednesday, December 16, 2009 4:28 PM
Subject: [Elecraft] K3 Amplifier Keying


> My K3 will be keying 3 amplifiers....144...50 and HF.  I have two amp 
> keyers
> that can be used or just one.  Should I find an RCA cable with 3 females 
> and
> one mail or does anyone have a better suggestion.
>
> Thanks
>
> Phil
>
>
> Philip LaMarche
> LaMarche Enterprises, Inc.
> <http://www.instantgourmetspices.com/> www.instantgourmetspices.com
>
> www.w9dvm.com <http://www.w9dvm.com/>
> 800-395-7795 pin 02
> 727-944-3226
> FAX 727-937-8834
> NASFT 30210
>
> K3  #1605
>
> CCA 98  00827
> CRA 1701
>
> W9DVM
>
>
>
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