[Elecraft] K3 Key Out line

[Brian Machesney]

Phil,

You can see the T-R switching circuitry in the schematics available on the
Elecraft web site. Just search for "t-r" and you'll find the circuitry for
both the 10W and 100W PAs.
-- 
73 -- Brian -- K1LI


On Wed, Dec 23, 2009 at 12:01 PM, Phil Hystad <k7peh at comcast.net> wrote:

> I noticed from the documentation that the K3 Key out line can handle up to
> 200 VDC and 5 amps.  I assume this means that when the key out is closed
> that it can handle 5 amps of current.
>
> So, I am curious, what kind of switch mechanism is used for TR switching.
>  Is this an actual relay or is it some kind of transistor switch.  I am
> guessing transistor based switch but this is where I started wondering about
> the 200 VDC and 5 amp capability thing.
>
> Or, am I totally off base.  I am willing to be off base without shame
> because I really do not know a lot of details of how these things are
> actually done.
>
> Oh, two more minor decisions on configuration to make and then I order my
> K3, probably just after Christmas sometime.
>
> phil, K7PEH
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>