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_____ From: Barry N1EU [via Elecraft] [mailto:ml-node+6271081-1705900565-157...@n2.nabble.com] Sent: Wednesday, April 13, 2011 7:19 PM To: pcbyrne Subject: Re: K3 filter question aandrei wrote: I have the 5 pole 2.7 filters for main and sub RX. One filter offset is -.94, the other is -.81 In order to do diversity receive, I have to set them both to about -.88 My question is: what happens when you set a filter offset differently than the one specified (as in my case) ? How is this supposed to influence operation (normal as well as diversity mode) ? How can things be improved, short of buying new filters? By offsetting the 2.7Khz filter center freq, you may incur some slight asymmetry in the passband response at the lower and/or upper knee of the response curve, but the vast majority of the passband will be unaffected. If noticeable, it will be relatively minor. The other options would be to use closer matched 5-pole filters or use 8-pole filters. 73, Barry N1EU _____ If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/Re-k3-receive-audio-tp6259940p6271081.h tml To start a new topic under Elecraft, email ml-node+365791-145773984-157...@n2.nabble.com To unsubscribe from Elecraft, click <http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubsc ribe_by_code&node=365791&code=dzdubWRAdHdpbmxha2VzLWFyLnVzfDM2NTc5MXwxMDQyOT EzOTY1> here. -- View this message in context: http://elecraft.365791.n2.nabble.com/Re-k3-receive-audio-tp6259940p6271190.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
