niteviser wrote: > Hi Ed, > > I have read the info again and it's a bit confusing. In the -26 variant the > IC700 reference is 539-00010-55 and the standard is 539-00010-50. But there > were different devices used under the 539-00010-50 number an 'old' one by NDK > and a 'new' one made by Rakon. The 'new' one only uses 3 pins and the FM pin > is not fitted or needed. So if the 2.5V is varied to pull the resonance and > still have full adjustment swing it would not work. The variance is only by > fitting another value resistor on the divider, not applying anything from > external. As you say it can still swing on the adjustment alone. Sorry for > leading you astray. I'll have to stop answering Emails at 2AM and get some > sleep instead. > > Al >
Al, No problem. Your 2:00 am replies are at least as coherent as my mid-day replies. Somehow I got it in my mind the -26 was able to be frequency warped externally. As it isn't, the rest is pretty straight forward. Ed Yoho W6YJ

