[Elecraft] KNB2 - can´t bring it to work

I have sharp pulses on all bands hitting the band about once per second, which the noiseblanker of my old IC 735 kills, but not so my K2 S/N 4765. I can - more or less - read a circuit diagramm (I don´t understand each components function in detail yet) I´ve tried some signal tracing, couldn´t

Re: [Elecraft] KNB2 - can´t bring it to work

Karsten, Sounds like the noise is outside of the KNB2's range. There is a mod for wider spaced noise like you describe. See http://www.qslnet.de/member/la3za/K2/modAny.html#KNB2 What you describe sounds like an electric fence. There was some discusion about an improved noise blanker on the

Re: [Elecraft] KNB2 - can´t bring it to work

Thank you Darrell, I checked the pulse width, and in fact it is 500 usec or broader, while the KNB2 spec is 10 to 70 usec. Seems I have to play with C11 and C12. Still, if could get hold of a diagram, that shows what to measure where, it would be appriciated. 73 Karsten DK4AS Darrell