On K3's #94 and #965, on cw when you narrow the DSP down past 150 to 100,
there is a noticable pop in the speaker and the audio becomes quite muted.
The slight pop is normal, depending on signals present at the moment you
transition between 100 and 150 Hz.
Usually if the signal goes down it is either (ra) ref cal is off or (b) you
are using RX Eq and have the prefered sidetone frequencie sboosted. Set it so
that your prefered pitch is at 0 dB.
73,
Lyle KK7P
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