Uniden Bearcat UBC800XLT / BCT15 /BCT15X
The UBC800XLT is the improved European version of the BCT15. It's a versatile recent scanner.
The receiver IC is an NJM2551, with the unfiltered audio on pin 12. Soldering the receiver IC is not necessary: the baseband audio is also available on a solder pad marked 'DISC'.
Test point DISC contains the unfiltered audio
Insulated wire connected to DISC
Follow the next steps to make a discriminator output:
The housing is connected to ground, so the chassis socket is grounded as well.
3.5 mm socket