Thursday, May 17, 2018

118.5 Mhz receiver butcher

I added two chokes, changed the input  and changed the diode polarity.
Other than that it is as posted on TRB.
The post ahead of this one needed some resistance in the plate circuit and this one needed some reactance. First we get the DC bias correct and then we add the AC components.  Bypassing the source resistor and loading the drain for AC signal conditioning.
I was asked about a good reference. This is where I started:
radio course
The course is bundled in one file. It may take a while to download. 960 pages of electronic data.
I lowered the value of the coupling caps. Check here to find out why.
Capacitor acts as a coil?

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