Hardware interface

Here is the most basic 2 level FSK decoder.
This will decode POCSAG, but will not reliably decode FLEX
without being connected via the discriminator output .

Download this List of Discriminator Outputs

Another 2-Level design

 

L0PHT Circuit board design for first circuit

 

Second circuit mounted in 9-pin

 

 

 

 

Here is The all bells and whistles 4 level Decoder

Printed Circuit board design