|[AMRadio] Ranger Modulation|
jack at schmidling.com
Thu Nov 16 11:28:11 EST 2006
Larry Taft wrote:
> Try reversing the phase of the audio by swapping the output leads of the
> modulation xfmr.
First I swapped the tubes to no avail. I then swapped the wires and now
have a strange buzzing that I can not locate but it shows up on the
audio with the gain at zero. Don't know if I barfed something up or not
but I vaguely remember reading somewhere that this an an indication to
reverse the leads.
> Weak tube in the audio chain causing lack of gain needed for the
> positive peak.
Just ordered new audio tubes.
Now I notice another discrepancy..... the manual that came with it says
to adjust the mod current to 75-90 ma. The manual that Rick sent me for
the new version which I seem to have says 55-70 and no clue why the
Which is correct and should I make an allowance for using 6L6's instead
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