[sdiy] AM reciver

[R. Drake]

what's neat about this one is, it looks like you could have voltage control
over the tuning.  sweet!  anybody ever try it?

b


on 3/19/05 9:54 AM, René Schmitz at uzs159 at uni-bonn.de wrote:
> 
> ...An example of a direct conversion set is here:
> http://www.qsl.net/vu2upx/Projects/dc_rx.htm Its for 20m, but if you
> change the tuning tank on pin 6 of the NE612 and the filter on the input
> it should work for other bands too. And you could perhaps use a variable
> cap, instead of the varicap diode. (But zehner diodes can be used as
> varicaps too.)
>