Quote:
Originally Posted by richard8123
I have a turret drum that came from an old boatanchor (Murphy B40D).
Edit2: I probably should draw out the tuned circuits only that are in the drum, post a link, and draw comments from that. Hopefully then a solid-state circuit can be built up.
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Here is a picture of the Front End as is and a picture with the RF valves removed, but keeping (for now) the valve oscillator and mixer.
http://homepage.ntlworld.com/richard...RF%20Unit.html
Section 1 includes drum pins 1-5, section 2 pins 6-10, section 3 pins 11-15 and oscillator pins 16-20.
Need modern transistor circuit for the two RF stages.
EDIT1: Transistors: I suppose were looking at a modern FET, that is as good as a valve WRT cross modulation/overloading. Do such "angels" exist? I do not suppose we would be using 2N3819 these days? Have we moved on? :c)
Would remove: C101, C141, C142, C143.