[ARC5] nbfm detector

[Ian Wilson]

The 6BN6 is a rather undervalued tube. It works very well as a product
detector, with
a (voltage) conversion gain in the double digits (article in the SSB manual,
came
originally from QST; I forget the exact title, something about Receiver
Improvements).

*I think it would work well as a regenerative detector also.*
*
*
*The key to the high gain (in both cases) is the tiny plate current - about
0.45mA. This*
*lets you use a high plate load resistor and realize the available voltage
gain. Much*
*easier than using an audio choke or matching transformer.*
*
*
*The 6BN6 is also dirt cheap, turning up frequently in box-o-tubes
(boxes-o-tube??).*
*
*
*73, ian K3IMW*
*
*