K3 Keying external Amps

[Richard Thorpe-2]

I have a K3 and want to key two different external amplifiers.  The K3 has one "key out" line this I use to key an Expert 1K 160-6 meter amp.  Now that I've installed a K144XV board I want to key a 144Mhz block amp.  I wondered how my fellow hams are keying two seperate amps separately with one key line?  Thank you.

R Thorpe K6CG
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[N0AZZ]

My 300w brick only need RF to it no key line needed.


73,
Fred/N0AZZ
K3 Ser #'s 6730/5299--KX3 # 2573--K2/100--KAT100
P3/SVGA--KPA500--KAT500--W2



-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Richard Thorpe
Sent: Tuesday, April 16, 2013 4:03 PM
To: [hidden email]
Subject: [Elecraft] K3 Keying external Amps

I have a K3 and want to key two different external amplifiers.  The K3 has
one "key out" line this I use to key an Expert 1K 160-6 meter amp.  Now that
I've installed a K144XV board I want to key a 144Mhz block amp.  I wondered
how my fellow hams are keying two seperate amps separately with one key
line?  Thank you.

R Thorpe K6CG
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[W7GJ, Lance]

Hi Richard,

If both amplifiers use transistor switching, you may be able to simply connect the
two in parallel and use the K3 to activate whatever amp is turned on.  I am sure
there must be better ways to do it, but simple often has a lot going for it.    I
have the key out of my K3 connected to a TE SYSTEMS 0552G amp for 6m and a Mierage
B1016 amp for 2m.   No problems yet ....  GL and VY 73, Lance


On 4/16/2013 9:03 PM, Richard Thorpe wrote:

> I have a K3 and want to key two different external amplifiers.  The K3 has one "key out" line this I use to key an Expert 1K 160-6 meter amp.  Now that I've installed a K144XV board I want to key a 144Mhz block amp.  I wondered how my fellow hams are keying two seperate amps separately with one key line?  Thank you.
>
> R Thorpe K6CG
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

--
Lance Collister, W7GJ
(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M)
P.O. Box 73
Frenchtown, MT   59834-0073
USA
TEL: [phone]
QTH: DN27ub
URL: http://www.bigskyspaces.com/w7gj
Windows Messenger: [hidden email]
Skype: lanceW7GJ
2m DXCC #11/6m DXCC #815

Interested in 6m EME?  Ask me about subscribing to the Magic Band EME
email group, or just fill in the request box at the bottom of my web
page (above)!

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[Bill W]

Hi Richard,
I simply build a small switch box from parts I had. One input and two outputs that you can switch between. If you are short on parts you can probably find everything at your local Radio Shack.
Bill - W0BBI
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[Jim Rhodes-2]

I used to just leave them plugged into a Y connector and powered up the amp
I wanted to use. Now I have a KPA500 so I don't have to worry.

Jim Rhodes K0XU
Sent from my Droid Razr Maxx
On Apr 16, 2013 4:03 PM, "Richard Thorpe" <[hidden email]> wrote:

> I have a K3 and want to key two different external amplifiers.  The K3 has
> one "key out" line this I use to key an Expert 1K 160-6 meter amp.  Now
> that I've installed a K144XV board I want to key a 144Mhz block amp.  I
> wondered how my fellow hams are keying two seperate amps separately with
> one key line?  Thank you.
>
> R Thorpe K6CG
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

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