Re: File /LP.pdf uploaded #file-notice


Alan G4ZFQ
 

Why would the winding of toroids be a problem only for QRP Labs filter kits and not for *any* project that has toroids to wind?
Bill,

Yes, The QRP Labs LPFs and BPF use standard designs.
It seems to me that very often that when I have wound toroid coils for any project the inductance is a little high. Possibly due to the ferrites being at the high end of their spec.
A tested-accurate inductance meter may help otherwise it is trial and error as detailed in the assembly instructions.

73 Alan G4ZFQ

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