[ARC5] SCR-274N side tone level?

[David Stinson]

Caution:
If you try putting a pot across the sidetone winding, rather than in series with it,

the impedance change this makes is reflected into the other windings of the 

modulation transformer and will change your modulation envelope.  It changed

mine drastically when I tried this.   In fact, any non-spec load on the sidetone 

winding causes tx modulation envelope effects. It’s been a lot of years now

and I don’t remember the exact details, but ended-up abandoning the sidetone

line altogether in my sets.

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