Uglier Sister Superhet Receiver
This is a 40 M superhet that I built a few years ago. While I was happy with this receiver,
it has been discontinued from the main listings on the QRPHB website. I have had a couple
requests for this schematic, so I have created this archival web page.
I stood a lot of current in the IF preamp and main IF amplifiers, which is not really necessary,
particularily in the case of the post-filter amp. Of course raising the emitter resistor values is easy to do in these amps if you do wish to lower the current.
There also is no audio filtering in the AF preamp stages, which is something that I
do in all receivers that I build now.
VFO and BFO
VFO schematic
BFO schematic
Construction Information
Refer to this web page for details on
the xtal filter, diplexer and construction information.
The Norton RF preamp is discussed on the RF Preamp web page.