I have a medical condition caused by electronic radiation. Lack of energy, sleep and buz noise in the head etc. This comes from cellphone masts,TV, computers, etc. Mostly microwave radiation. When I holiday in the wilds for 2 weeks this goes away. I once saw a quarts crystal diode connected to a flat toroid coil (areal) that neutralize electronic radiation but also stops a cellphone from working in its vicinity (a few meter). This is desireable. Where can I buy sutch a diode? Tried websites from midnightscience to antique radio. If sutch diodes are no longer available, what is the angle to cut a quarts crystal to produce this effect? It must both recieve and transmit the same signal neutralising it to a great degree. There is a pendant called a Q-link on the market. If this is worn for a month or so, it protects against radiation. I don,t want this.(already got one) I want the other one with the radio crystal. Can you help?