Generally NOTCH is used to eliminate sharp peaks in audio frequencies - typically hets/whistles but they can be also peaks on low frequencies. In Jaguar users have a special AUTONOTCH available (designed for MW listening), in addition JAGUAR PRO users have max 20 MANUAL NOTCHES available.
JAGUAR PRO users can freely tune the power of all the notches (including AUTONOTCH), JAGUAR LITE users do not have that option.
Jaguar's AUTONOTCH is a "safe" notch, it can be kept always on without negative effects in audio.
Jaguar's AUTONOTCH can be toggled ON <> OFF by clicking AUDIOBAR > NOTCH.
Unlike "normal" auto-notches, Jaguar’s autonotch is not based on continuous scanning of the audio spectrum so there can be carriers/interference anywhere in the spectrum not cleaned by the autonotch. Those must be handled manually. We know from experience that a "scanning autonotch" often causes more harm than benefit so experienced MW DXers normally do not use classic autonotches.
JAGUAR’s autonotch never checks if there is really hets/whistles/peaks in the audio; it just relies on the AM frequency spacing. A better name for this would be "Trans-Atlantic Autonotch". When you listen to 10-kHz- spaced frequencies, the autonotch works on the potential hets caused by nearby EU frequencies but when you listen to 9-kHz-spaces frequencies, the autonotch works on the potential hets caused by the 10-kHz- spaced frequencies. This is mostly useful for listeners in USA. Otherwise, every other annoying het must be notched manually.
So, JAGUAR’s autonotch handles only 1 kHz / 2 kHz / 3 kHz / etc. hets, based on the nearby EU (or US) frequencies. When this AUTONOTCH is enabled, it takes the hets away from both sides on both SSB modes, based on the frequency you are listening. For example, if you are on AM 1030, the autonotch will always clean 4 kHz and 5 kHz when on LSB or USB.
JAGUAR PRO ONLY
Users can not re-adjust directly the position of AUTONOTCH, but those notches can be tuned in AUDIO WINDOW. Notching (auto & manual) always removes a part of the "real audio" so it is a challenging game. Some experienced DXers are very critical about classic autonotching but they can accept this kind of a "safe autonotch", and can keep AUTONOTCH always on by default.
MANUAL NOTCHES
MANUAL NOTCHES can be added/trimmed in AUDIO WINDOW - see detailed description in AUDIO WINDOW help.