Looks like works really well! What is calcination temperature, please? I have tried aquarium charcoal but resistivity much to high to work properly. Would I be right that calcination reduces this? Many thanks, best wishes!
Hi, Thanks for watching! Using a gas oven in the kitchen, I don't think the temperature was high enough. I am not sure about the calcination temperature and how the resistance value changed. If possible, I wanted to put charcoal in a ceramic kiln. I used activated bamboo charcoal, which is sold for deodorising. Good luck!!
Thanks for watching! I agree. When I was in high school around 1975, I assembled QR666 (kit version) of the R300's earlier model, The R300 is particularly beautiful, especially with its illumination.
Hi, thanks for watching! I am not sure exactly what year it was released, but I do remember buying this radio in 1988. According to the website, the ICF4900 (early model, without II) was released in 1984.