Filter Board

Josh Luben
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RF crystal filter board that can be used with or without varactor diodes for adjusting bandwidth
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Creative Commons Attribution-ShareAlike 3.0 / CC BY-SA 3.0

Published: April 16, 2013 Concept

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Component (19)
Qty
Description
Varactor Diode

D4, D3, D2

3
Generic Varactor Diode
Capacitor

C3

1
Generic Capacitor (1pF)
pad 0.040 in hole

U21, U19, U27, U25, U20, U26, U24

7
pad 0.040 in hole
HC-49/U-S

X3, X1, X5, X4, X2

5
20MHz Quartz Crystal

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NC Drill (Excellon)
NC drill and route machine instructions (more info)
XYRS
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