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Ham Radio 2000
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example5.dat
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1992-11-08
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468b
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16 lines
; Example5.dat - 50 ohm, 5th order, 5MHz Butterworth low-pass filter
; This example will show how to calculate input impedance.
; Set the number of sample points to 140 for this circuit.
; RS is the impedance of the source, normally this is 50 ohms,
; but it must be set to 0 if you want to calculate impedance, VSWR,
; or return loss.
RS 1 2 0
C1 2 0 393PF
L1 2 3 2.575UH
C2 3 0 1273PF
L2 3 4 2.575UH
C3 4 0 393PF
RL 4 0 50
PLOT 1 4 100K 10MEG LOG ZP