Dave, Tnx for the tip. In one K3 the 400 stayed at 0, and the 200 went from -.89 to -.84. In the other K3 the 500 went from -.75 to -.88 and the 200 went from -.94 to -.96.
73, N2TK, Tony #311 #1435 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Dave, G4AON Sent: Sunday, March 28, 2010 11:10 AM To: [email protected] Subject: Re: [Elecraft] scopeing filters for eventual diversity receive. Inject a clean signal to the K3, around S5 - S7 in level, go into the CONFIG menu, adjust the filter offset (FLx FRQ) by rotating the main tuning knob until the signal drops one S point then adjust it to the other side until it again drops one S point. Set the offset to the middle of the two extremes. My 400 Hz 8 pole filter appeared to have more insertion loss than my 250 Hz 8 pole, setting the offset solved the apparent additional insertion loss. My settings are -0.07 for the 400 Hz and -0.05 for the 250 Hz. 73 Dave, G4AON K3/100 #80 ----------------------- How are you testing for offset? Sounds like I should check the offset on my 5 and 8 pole filters. 73, N2TK, Tony ______________________________________________________________ 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 ______________________________________________________________ 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
