INDIAN TELEPHONE Vintage Magazine Ad

The Vintage Magazine Advertisement speaks conventional valve sets a limit to the frequency of oscillations. The Old Ad suggests

THE REFLEX KLYSTRON OSCILLATOR

Since the invention by De Forest of the radio "Valve", the klystron tube, a wartime invention for radar, has substantially widened the usable electromagnetic spectrum. The conventional valve sets a limit to the frequency of oscillations that may be obtained from it. This is due to the time taken for electrons to travel from the cathode of the valve to its anode as a result of which higher frequencies cannot be generated.

The reflex klystron overcomes this by a very clever principle. A tuned cavity velocity modulates an electron beam traversing it. A charged electrode set in the path of the beam reflects it back forming "bunches" of electrons. The returning electron bunches sustain an RF (Radia Frequency)  field in the cavity giving rise to super high frequency oscillations of the order of thousands of megacycles per second.

Reflex klystron oscillators are part of standard micro-wave terminal equipment supplied by ITI to the Posts and Telegraphs department for providing high grade, multi-channel, and telephone links.

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I mostly write technical aspects and not much into creative writing. For the past decade I worked along with top notch SEO Internet Marketing professionals which naturally lured me into the world of Search Engines. When I am not writing I read from comics to philosophy. Antiques, Fishing, hunting are my passions.