jinboqiu
Member level 1
I use a 3 overtone crystal(fo=40.175MHz,CL=18pF,Req<35) to design an 160.7000MHz Local osillator(4x40.175MHz) in an
VHF reciever worked in 150MHz.I found it is very difficult to align the LO to 160.7000MHz.When I try to
change L16,L13 or C7,C74 to align the output signal to 160.7000MHz,the osillator often stop to work or
the output amplitude drop much(20-30db).
Can any one help me?
Thanks!
VHF reciever worked in 150MHz.I found it is very difficult to align the LO to 160.7000MHz.When I try to
change L16,L13 or C7,C74 to align the output signal to 160.7000MHz,the osillator often stop to work or
the output amplitude drop much(20-30db).
Can any one help me?
Thanks!