OSH Park
FM Trap
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FM Trap
by WarHawk-AVG.
2
layer board of
1.19x0.40
inches
(30.12x10.11
mm).
Shared on
December 29th, 2015 11:07.
FM Trap
2 layer board of 1.19x0.4 inches (30x10mm). $2.35 for three.
I borrowed the design/idea from a blog by 9A4QV and designed this board, used to filter/block overpowering FM radio stations and help clean up recieve of RTL-SDR recievers…this is for all the DIY'ers out there
Complete information DIY “FM TRAP” or 88-108 MHz Band STOP filter
Example
2x 56pF capacitors (SMD 0805)
1x 22pF capacitor (SMD 0805)
2x 45nH inductance (2.5 turns, 0.35mm wire inner dia 5mm)
1x 126nH inductance (5 turns, 0.35mm wire inner dia 5mm)