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 <k7...@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@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
