On Wed, May 18, 2011 at 10:33 PM, Ron D'Eau Claire <[email protected]> wrote: > Guy, you obviously didn't read my post. > > I said the signal path was analog all the way to the second I.F.
Actually I DID read your post. You said: "Don't forget that the K3 *is* a largely analog radio." I quite disagree with "largely", and that is what I was writing about. It AIN'T your daddy's analog radio. It doesn't have an analog skeleton, it doesn't have an analog heart, it doesn't have analog controls, and the front panel could be easily remoted across the internet if Wayne took a mind to do it. It's essential behavior is all in firmware, not in the analog components. If anything, it's minimally analog as necessary. And the signal path to the second IF is NOT all analog, It is composed of a collection of analog pieces which are switched in and out, shared between RX and TX, directions reversed, by digital switches controlled by firmware. Most of the main board is dual use, and there are dozens of those switching double diodes. The preamp is used in some situations in the transmit state. It's all in plain view in the schematics. 73, Guy. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
