Your BFO crystals are OK - there was no change. With the older crystals - sometimes they made fine filters, it was something like "the luck of the draw" because the motional inductance was not specified. I would generally recommend you change them, but as you say, if it ain't broke, don't fix it. In every case where I have changed the crystals for an upgrade customer, there has been an improvement. When you change the crystals on the KSB2 board, that is a good time to change the capacitors that control the filter bandwidth - the caps are easier to change while the crystals are removed.
73, Donn W3FPR On 2/28/2012 12:06 PM, kf4ueo wrote: > I have an early K2 with K2SSB that has been mostly upgraded to Rev B. I don't > have any issues with my K2 but have always wondered over the years if I need > to upgrade the filter/BFO/SSB crystals. I have tended to think however "if > it aint broke..." etc. I have done the flatness SSB mod. Is it worth it? > > ______________________________________________________________ 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
