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WD8DSB surface mount build of ADSL Filter based on original filter design by OZ1CTK (but using common off the shelf values and surface mount components as shown below).

Filter designed to attenuate 160 meter signals that interfere with ADSL modem.

(Double Click On Image To Enlarge)

Single sided circuit board 0.4" wide x 1.2" long

Downloadable .pdf document at bottom of page contains artwork and parts placement (1 to 1 scale in inches).

Used dremel tool with 0.037" wide cutoff wheel to cut traces into the circuit board.

Mouser Part Numbers

6800 pf, 100 volt surface mount capacitor (quantity =1) 810-C3216C0G2A682J

4700 pf, 100 volt surface mount capacitor (quantity = 2) 581-12061A472JAT2A

6.8 uH, 285mA surface mount inductor quantity = 4) 810-NL453232T-6R8JPF

LTSpice Frequency Response Plot (Source and Load Impedance = 100 ohms)

(Click on plot to enlarge)

Website created and maintained by Don Kirk (wd8dsb), Feb. 25, 2013