Hello Rich and others
Thank you for your response
The good thing is that your PDF gives a measurement diagram.
As said, I never found the documentation of this Motorola filter.
I¡¯ll look in my inventory if I find one, I know I have ceramics on an old satellite decoder and do a test to see the curve.
I wondered, if I use the same circuit with an input generator from 44.8 to 45.1 Mhz and I draw a curve in relation to injected signal, output signal would be a solution (?) by monitoring that the injected signal is always the same voltage. ---> Ratio input/output curve.
In the worst case there are some on Ebay, but it¡¯s a long time to have them from China, if came US or Greece some shipping costs
Unless a good soul can send me two, from Europ will be the ideal.
there are also special shops but high shipping costs or minimum shopping of €50 for free shipping
cdt
Gerard