Xtal Var Filter Yu1lm
Xtal Var Filter Yu1lm
Xtal Var Filter Yu1lm
100-330pF) .I made few crystal filters of this type for other frequencies (8MHz ,10.7MHz and 20MHz)with
fixed bandwidth and filters are very good especially for the CW use. GL with construction 72/73 Tasa
YU1LM/QRP
Graph 1
0
DB(|S[1,1]|) *
sprat1
-10
DB(|S[2,1]|) *
sprat1
-20
DB(|S[2,2]|) *
sprat1
-30
-40
-50
-60
9.993 9.994 9.995 9.996 9.997 9.998 9.999
Frequency (MHz)
10