Another superhet, but with an absolutely minimum of parts to receive local and powerful regional radio stations – or your own program (with a micro power home transmitter):
Only three new blocks are required (mixer/oscillator, IF amp, reflex R/C combination). In this circuit the IF amplifier is also the AF amplifier – after detection – and the AF output goes direct to the speaker / outout transformer. This version uses the big Lectron speaker, another version using the small version look like this:
By the way: the telescope antenna block was another idea – of so many – of Mr. Guerth…
A sensitive superhet version (shortwave etc.) with three (!) IF stages will come immediately!
Thank you Guenther for this nice little circuit. I love the way that the IF amplifier is also the AF amplifier. Saves a few blocks at least.
I would love to build a superhet radio with Lectron. I have the electronic parts already.
What do you think is the best option ?
Building small circuit blocks (RF, oscillator, IF, …) or each component apart ?
I found also a neat antenna solution : I stick a rather thick spring wire into 1 of the circuit separator blocks. I will take a picture of it soon.