Agreed, and you need 3dB more noise with an actual antenna connected at any specific frequency, in order to ensure that your antenna is constrained by your local noise floor, so a 6dB rise in noise relative to a 50 ohm load should be aimed for.
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Regards,
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Martin
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On Sun, Dec 29, 2024 at 04:11 PM, W0LEV wrote:
However, as stated in the original email, at HF frequencies and many times even 50-MHz, the real antenna noise exceeds this 3 dB of thermal noise.?
