"John Byrns" wrote in message
...
[snip]


Then why is the eye tube always connected to the audio detector and not
the AGC rectifier?

[snip]

The Radiotron Designer's Handbook 3 (p. 225) brings up this topic.
Basically they say, in radios with simple AVC seperated from the audio
detector, it's preferable to connect the eye tube to the AVC line. If the
radio uses delayed AVC, it's preferable to connect the eye tube to the audio
detector (through a decoupling network) if eye tube action is wanted on weak
signals.

Frank Dresser