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<blockquote data-quote="Henry Cohen" data-source="post: 68316" data-attributes="member: 123">Re: RFSeveral folk have correctly pointed out the issue of having multiple transmitters very close to one another, while possibly too close to one or more of the RX antenna(s), will result in the anomalies you&#039;ve experienced, and to use foil pans to reduce mixing in the TX power amplifier sections as well as IF and LO mixing. (Remember to make sure the pans don&#039;t touch each other or have some other physical barrier.)The other observation I would make is what was the antenna used for your SA? Ideally, you&#039;d like to connect the SA to an output port on the same antenna distribution feeding the wireless receivers so it sees what the receivers see. The front end of the SA will then see the IM products created in the antenna distribution as well as create the identical ones additionally created in the receiver front ends (unless you&#039;re fortunate enough to have a laboratory grade SA with IM suppression &gt;100dB).</blockquote>

[QUOTE="Henry Cohen, post: 68316, member: 123"] Re: RF Several folk have correctly pointed out the issue of having multiple transmitters very close to one another, while possibly too close to one or more of the RX antenna(s), will result in the anomalies you've experienced, and to use foil pans to reduce mixing in the TX power amplifier sections as well as IF and LO mixing. (Remember to make sure the pans don't touch each other or have some other physical barrier.) The other observation I would make is what was the antenna used for your SA? Ideally, you'd like to connect the SA to an output port on the same antenna distribution feeding the wireless receivers so it sees what the receivers see. The front end of the SA will then see the IM products created in the antenna distribution as well as create the identical ones additionally created in the receiver front ends (unless you're fortunate enough to have a laboratory grade SA with IM suppression >100dB). [/QUOTE]

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