Crystal Radio eBay Poldhu Radio DIY KIT

I am not sure how this works. With the power on it does not matter if the tube is in or not in night mode it works pulling in signals nice and loud through my amp. In crystal mode nearly nothing and the two stations it picks are are hardly audible.. With it in day mode it will not work without the tube but it distorts real bad when you tune it in.

eBay Poldhu Radio DIY KIT Crystal HF receiver pt3 of 3

I decided to change the detector diode for one which has a lower forward voltage and the blue LED for a orange/yellow LED. I think it looks better but that is just my opinion. Truth be told I would prefer it a little dimmer and will probably make it so.
I give it a thumbs up and now have a reference to build my own too.

eBay Poldhu Radio DIY KIT Crystal HF receiver

I bought a Crystal Radio Set. A Poldhu, its a kit on eBay. I wanted to compared a real crystal radio receiver with one that I had made. So I bought a DIY kit. It has a Valve / Tube as well as the ability to be just crystal. After I built it I did make a couple of changes, not because the set was bad, because I wanted an aesthetics change and to try a germanium detector diode with a lower forward voltage to see what if any difference it would make.

Crystal Radio 2 Diodes 1 Resistor pt2

I am a home learning electronics hobbyist and I find the simplest of circuits fascinating. I especially like the simple circuits which do so much. This two Diodes and 1 Resistor circuit really does receive radio broadcasts. I also noticed, the TDA7267 amp circuit works best at 6 volts. For some reason applying more voltage reduced reception and going lower than 6 volt the amp did not want to work.