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Well, the recommended maximum input power (and that even totaled from outside you viewing window) is -25 dBm.? 50-watts of power is +47 dBm.?? 50-watts = 10[log(50)] = +17 dBw??????? Adding 30 dB to get to dBm: +17 dBw + 30 dB = +47 dBm So, you need an attenuator of 72 dB of attenuation. 47 dBm?+ 25 dBm = 72 dB.? Of course, that's a lot.? I'd recommend several attenuators to get to -25 dBm from +47 dBm.? The first three will be expensive as they must be power attenuators.? The following will get you there: One 3 dB attenuator at 30-watts gets you to: Total of 3 dB attenuation gets you to 25 watts from 50 watts Another 6 dB attenuator at 30-watts gets you to: Total of 9 dB attenuation gets you to 6.25 watts Another 10 dB attenuator at 10-watts gets you to: A total of 29 dB of attenuation gets you to 0.625 watts
Now the attenuators are getting less expensive.
Another 10 dB attenuator at 2-watts gets you to A total of 39 dB of attenuation gets you to 0.0625 watts Another 30 dB attenuator at 2-watts gets you to A total of 69 dB of attenuation gets you to 0.00625 watts Another 3 dB attenuator gets you to the goal of 72 dB of attenuation and keeps the TinySA in the faithful measurement regime.? To do this in a single attenuator is unlikely and quite expensive.? Even breaking this down into two power attenuators of 35 dB each is still pretty expensive.?? Three power attenuators is a bit less expensive, but still expensive.? Think again about feeding 50-watts through 72 dB of attenuation directly to the TinySA!!!! Dave - W?LEV Now we're getting less expensive. Another 30 dB attenuator at 2-watts gets you to: 53 dB -? 30 dB = 20 dB Another 30 dB attenuator at 2-watts gets you to: 20 dB - 30 dB = -10 dB On Thu, Nov 14, 2024 at 8:21?PM Flex-tech via <Flex-tech=[email protected]> wrote:
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Dave - W?LEV |
