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Message: <blockquote data-quote="bema" data-source="post: 934091" data-attributes="member: 366229"><p>If V and H are on the same frequency the "unwanted" signal should be at least 20 dB below the wanted one. The SNR will be degraded by approx 0.04 dB. If it's only 10 dB below, it will degrade (SNR) by 0.5 dB which is not so good if you have very low margins to the receiver threshold. So if the unwanted signal is 10 dB stronger than the wanted one, the isolation should be at least 10 dB+"SNR wanted signal, dB"+20 dB. E.g. 10+8+20=38 dB. If there is some frequency offset (half BW) between V and H, maybe we can reduce the requirement slightly but probably not so much....</p></blockquote><p></p>