Steve, All you need to do is tack an NPO capacitor in parallel with the 68 pF C2 - try different values until you find the range that yo want. After finding the range, then adjust the turns on L1 to place the lower end of the range where you want it. No other tuning should ge required, although you could re-peak the bandpass filters on transmit (use a low power level like 1.5 watts). If it is working well now, do not movethe adjustments far - just re-peak them. If you have the 4 band board, be certain to do the bands in the proper order - 30 meters before 40 and 15 (17) m before 20. Be aware that if you have the 30 meter band on that K1 you will lose coverage of most of the CW portion of 30 meters by moving the bottom of the range upward - all bands will move.
73, Don W3FPR Steve KS1G wrote: > Hi! I've had an early (S/N) K1 since mid-2001; bought it already built from > the original owner, has 80kHz bandwidth. Am I correct I just need to change > C2 and re-peak the filter board to widen the range? Is tacking another cap > in parallel practical? I'm also considering just re-aligning the VFO > coverage to hit, say 7.030 or so and up, as my cw speed can't keep up with > the faster ops below 7.025 or 14.025 anyway. Either way, any gotchas to > look out for before I start disassembling a working rig to "fix" something > that may not need fixing? I assume I have to remove the antenna tuner and > 2-band filter board before I can work on the VFO. > > 73 de Steve KS1G > > ______________________________________________________________ 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
