Very cool!! Now I'd be interested to see what those measurements look like with the general coverage receive board installed to see how much it truly doesn't affect performance.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Smith Sent: Friday, February 08, 2008 6:01 AM To: [EMAIL PROTECTED] Cc: Larry Phipps; [email protected] Subject: Re: [Elecraft] K3: just how wide is it? It's probably too early in the morning for Larry, N8LP, to be up, so I'll mention that he has measured K3 RF filter bandwidth data posted at http://www.telepostinc.com/K3_Stuff.html. Jack K8ZOA [EMAIL PROTECTED] wrote: > Hi Doug, > >> OK...just how wide is the bandwidth when "limited by the K3's BP >> filters? > > For what it's worth... > > A quick and very dirty attempt to "simulate" one of the filters using > Elsie 2.12 (free version) gave me in the 10m band filter a -3dB width > of roughly 2.7MHz, after some tuning -> 40pF trimmers to 32pF. I > assumed a Q of 1000 for the capacitors and 200 for the inductors. > > Maybe using Elsie or the AADE filter designer might help give you a > rough idea, if you can't do simulations with Spice. > > vy 73 de toby > > _______________________________________________ > 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 > _______________________________________________ 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 _______________________________________________ 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
