Using sandpaper to make DRO resonator puck frequency higher

Terminator3 · Nov 7, 2013

Hello! I would like to talk about DR puck altering using different methods. Lets say i have few GHz DR, using sand paper or small drill with abrasive make it height smaller, so frequency goes higher. I want to ask how feasible it is, how much tuning i can get, what happens with q factor. wich abrasive head for small drill i can use? thanks

jiripolivka · Nov 8, 2013

Terminator3 said:
Hello! I would like to talk about DR puck altering using different methods. Lets say i have few GHz DR, using sand paper or small drill with abrasive make it height smaller, so frequency goes higher. I want to ask how feasible it is, how much tuning i can get, what happens with q factor. wich abrasive head for small drill i can use? thanks

To increase DR resonant frequency I would use a copper or aluminum tuning screw- the closer to DR, the higher is the frequency. All satellite-LNB oscillators are tuned this way.
Many DRs are made of ceramic composition that is adjusted to temperature-compensate the design resonant frequency. Grinding a DR will break its design specs.

Using sandpaper to make DRO resonator puck frequency higher

Terminator3

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jiripolivka

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Using sandpaper to make DRO resonator puck frequency higher

Terminator3

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jiripolivka

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