the inductors are working with very low power signals, i wonder what affect it would have to turn one coil 90° to reduce mutual coupling? Just lazy day thinking 🙂
I did look at that. It didn't have must of a difference. What did, was making sure the windings only took up 2/3 of the circumference. Any more and stray capacitance starts to reduce the stop band attenuation. In my case that was around 10dB.
Hi Charlie-hope you are good,thanks for the video, thank you for the math's,it is always a good brain exercise ! ! Can I ask you- what size wire do you use to wind the inductors?.Thank you once again Mal
@@CharlieMorrisZL2CTM What is the unit "g"? A. weight in grams per some unit of length? B. American Wire Gauge (AWG)? C. Standard Wire Gauge (SWG)? or D. Something else entirely? Thanks
A half wave filter exists, it is mentioned in Solid State Design for the Radio Amateur, Experimental methods for RF Design and possibly the ARRL handbooks.