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Donor and distribution isolation
Just wondering if 0.5 inch donor riser and distribution riser can run vertically in the same conduit/shaft? How much separation do they need to achieve proper isolation? Is this even significant?
Regards,
Juan Z
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4 Replies
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I don’t believe there is separation needed on coax. Isolation is needed with the donor antenna and the nearest server antenna to the donor. The only oscillation issue I’ve experienced is when the server antenna was below the donor and within 20-50ft. The remedy was to add a 6dB attenuator.
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I agree with rick here. No physical separation needed between the donor and any riser cabling as long as it’s the same public safety DAS. Isolation is measured between the nearest serving antenna and the donor antenna.
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There is no required separation between the donor antenna and the riser/ cable. The only requirement for Isolation in public safety DAS is to have a 20 dB isolation measured between the donor antenna and any nearest omni/ Indoor antenna.
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There is no required separation between the donor antenna and the riser/ cable. The only requirement for Isolation in public safety DAS is to have a 20 dB isolation measured between the donor antenna and any nearest omni/ Indoor antenna
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