attenuator
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attenuator [2024/02/06 15:41] – ei3jdb | attenuator [2024/02/06 15:50] – ei3jdb | ||
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* Connectors and wire (I bought a pigtail that had a BNC at one end and an SMA at the other, and an N-type chassis mount with an SMA on the back) | * Connectors and wire (I bought a pigtail that had a BNC at one end and an SMA at the other, and an N-type chassis mount with an SMA on the back) | ||
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+ | You will also need things like a soldering iron, drills, spanners and screwdrivers to fit the connectors, and some way of measuring RF impedance. | ||
==Construction== | ==Construction== | ||
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+ | ==Testing== | ||
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+ | Test that both the inputs produce the expected SWR measurements and impedance values (my NanoVNA said 49.something ohms and a few pF of capacitance in the 70cm band.) Also test that shorting out one port does not change the impedance values of the other by very much. | ||
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+ | If these tests pass, you have an attenuator. | ||
attenuator.txt · Last modified: 2024/02/06 16:16 by ei3jdb