11/16/09

Version 2 of extra filter components 
for the Jack Smith designed filter
(400 kHz, 3 dB Chebyshev low pass 50 ohm):

2  FT37-61 cores
#24 magnet wire
(wind 17 turns of wire on each core)

2  .027 uF polyester capacitors (the end caps)

connected in parallel the following two caps 
form a .0363 uF capacitor (the "middle" one):
.033 uF polyester capacitor 
.0033 uF polyester capacitor

49.9 ohm 1% terminating resistor


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Original version of
Extra filter components for Jack Smith filter:

2  FT50-61 cores
#22 magnet wire
(wind 15 turns of wire on each core)

2  .027 uF polyester capacitors (the end caps)

connected in parallel the following two caps form a .0363 uF capacitor (the "middle" one)
.033 uF polyester capacitor 
.0033 uF polyester capacitor

49.9 ohm 1% terminating resistor