Tom, John's comments are right on for the entire process of building, installing and doing the alignment. The building is not a problem, it just depends on your construction methods - if you are a "insert one component and then solder it" type of builder, it will take you longer than those who "stuff a group of components and then solder".
As for John's statements about the use of Spectrogram to align the OP1 filter, yes, I highly recommend that method. Put a Spectrogram marker at 300 Hz and adjust the BFO so the approximate -3dB point on the low frequency passband skirt is positioned at 300 Hz, and you will have quite a reasonable filter for both transmit and receive - no need to set up FL2 using OP1 for a separate receive filter as is sometimes suggested - that is only necessary for those having a highly unusual vocal frequency span. I set all K2s that I repair in that manner, and have never received any complaints, but have often received compliments because the on-air audio reports of my customers have been quite positive. 73, Don W3FPR On 5/5/2011 8:58 PM, VK7JB wrote: > Hi Tom, > > I'm a slow and methodical constructor and the KSB2 took me 8 hours to build, > over 4 nights. > > What took a bit of time for me was the BFO alignment to optimise TX audio, > configuring the filters etc. I found Spectrogram very helpful. I did a lot > of monitoring and recording to get the TX audio the way I like it. Because > this was my first experience doing this sort of alignment, it took me maybe > 4 hours all up until I was happy. It would take very little time the second > time round or for someone experienced. > > There are some good tips in the archives about set up of the K2 after > installing the KSB2. > > I must say that I have several rigs and too many microphones and headsets > and I do use outboard audio equalisation on some of them. I also have a K3 > with its on-board 8 band EQ. BUT - the rig that attracts the most > unsolicited positive comments about TX audio is the little K2/100. People > comment "great audio - what are you running?!" And it's my K2 with the MH2 > hand mic. I rarely hear that using my other set-ups and so I wonder why I > bother with all the other audio paraphernalia. > > Enjoy building. > > John > VK7JB > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/KSB2-build-time-tp6335019p6336158.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 > ______________________________________________________________ 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
