Hello, Alexander: Yes, please send me that pdf.
For your information, I am sending a pdf of an article I wrote in December 1995 QST magazine describing modifications to the AGC system of the ICOM IC-765 to reduce in-band IMD. This illustrates how a "Fast" time constant can create unwanted in-band IMD. This article was why the ARRL Laboratory started making detailed in-band IMD tests for receivers after December 1995. Thanks & 73, Dean, N6BV Senior Assistant Technical Editor, ARRL (Retired) -----Original Message----- From: e72x (via Nabble) [mailto:[EMAIL PROTECTED] Sent: Thursday, November 13, 2008 1:28 AM To: Dean Straw Subject: Re: in-band-IMD test The Audio mod is a very simply! You just need to add simple two resistor pararell on KIO3 module and replace one RFI choke! If anyone need mode just send me mail and I will forward pdf direct ! 73, E72X, Alexander: Sorry but I don't read Russian. What were the K3's AGC settings for the IMD measurements? At a large input signal (S9+50 dB), using a "Fast" AGC time constant will often result in poor IMD for conventional receivers using analog type of AGC systems. I don't know the details of the K3's AGC system, however. Have you tried the S9+50 dB input signal with the "Slow" AGC setting? 73, Dean Straw, N6BV Alexander Ponomarenko-5 wrote: GA for all K3 users. So many guys has talks about perfect audio sound of K3. So many talks about "analog K3 sound" on e-ham. But how it possible if K3 have the so bad in-band IMD? You can read about "in-band-IMD-measurements" in russian here: http://forum.cqham.ru/viewtopic.php?t=17119&postdays=0&postorder=asc&&st art=0 ---------------------------------------------------------------------------- -- This email is a reply to your post @ http://n2.nabble.com/in-band-IMD-test-tp1491448p1493383.html You can reply by email or by visting the link above. -- View this message in context: http://n2.nabble.com/in-band-IMD-test-tp1491448p1494755.html Sent from the [K3] mailing list archive at Nabble.com. _______________________________________________ Elecraft mailing list Post to: [email protected] 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
