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Ello, so this is irritating me... Here's a feed I recently put up of a single conventional P25 system. It's a Raspberry Pi and a RTLSDR using a piece of software I've otherwise not used before setting this up -> trunk-recorder

Anyone have any idea what this obnoxious "chirp" is that can be heard at the end of many (most) of the calls? I figure it's probably related to OP25 or some other portion of trunk-recorder but I have no idea where to start with diagnosing and ANNIHILATING it.

Here's the last recording at the time I wrote this post and it begins with a transmission that includes that sound.

Any and all advice appreciated. Thanks.