Don't give up, but you may just be out of range.
Don't forget to try
138-144, 148-150.8 and 380-400
When you say FBI A-1 what Freq, as I have not seen/heard reports for 170.6250 since the Analog Days.
And the Fed Interop are you referencing the DOJ FIO on 172.2125 $390 ?? or freqs from the NIFOG ?