Hi dear elhit
(vacuumed tube) filled with multiple kinds of gas. And yes the pulse value is 2450Mhz. These are very general facts,
Once while I am studying airport passenger inspection camera which able to see under clothes I saw in the circuit a resonance section generates frequency from 12 GHz to 180 GHz ... It was locked in metal can about 4x4x1 cm I was not allowed to open it
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