I like to recommend to keep it as it is. Some tuners are NOT bypassed during receive, which gives some advantage as working like a preselector. If you would start VarAC without activating the tuner, it could keep the tuner with the last settings, different to the actual band and so the receiver keeps deaf until a bandchange activates the tuner. Even worse if the transmitter will be activated e.g. by the beacon into a untuned tuner.
I like to recommend to keep it as it is. Some tuners are NOT bypassed during receive, which gives some advantage as working like a preselector. If you would start VarAC without activating the tuner, it could keep the tuner with the last settings, different to the actual band and so the receiver keeps deaf until a bandchange activates the tuner. Even worse if the transmitter will be activated e.g. by the beacon into a untuned tuner.
73, Lutz, DH7LK