Mixers can have a big impact on how a receiver works, noise, distortion, overload, and other things.
I don't know about the H mode mixer, but I am sure a web search would give lots of info. I did a search on single signal direct conversion receivers and got a boatload of very interesting info! I have not paid much attention to 'modern' stuff, I like to build things with tubes, otherwise you need circuit boards, odd parts I don't have in the junk box, etc, but its very interesting to read about! I have had good luck with a 6BE6 as a mixer, antenna goes into grid 1 (after a high Q tuned circuit), grid 2 gets the local osc input, and the 4 frequencies come out the plate. Only the 455KHz passes through the filter on the output. I would guess, at least in some respects, the more mixers you have, the more noise, distortion and problems you can have. Brett N2DTS > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Fred Jensen > Sent: Monday, May 14, 2007 11:02 PM > To: Elecraft Reflector > Subject: [Elecraft] H-mode mixers > > A long thread. As it moved on and sometimes morphed, I was hoping > someone would explain what an H-mode mixer was, how it differed from > other mixers [a diode? Product detector? Double balanced? > Don't ask > me to name any more], and why I should care. Inquiring minds > would like > to know. In the interest of BW on this reflector which is > getting big, > maybe a URL would suffice? > > 73, > > Fred K6DGW > - Northern California Contest Club > - CU in the 2007 CQP Oct 6-7 > - www.cqp.org > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
