I work with many LMR sites and only once saw radio cabinets electrically isolated from the concrete floor/rebar. In this 40+ floor building rooftop, the equipment? was bonded back to a central grounding plate. For some reason the consultant for Westinghouse wanted all the Metricom data stations isolated from the building steel. In 99.999% of the cases in my work, Motorola R56 had all that equipment and building steel bonded together for equipotential. The broadcast industry might have a different view to keep common mode noise out of signal paths, but isn't that why line isolation transformers were invented?
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On Wed, Aug 23, 2023 at 11:52 AM, Matt AL0R wrote:
Curious on your isolation methodology for any conductive paths to/from the rack. I’ve seen many attempt to isolate a rack, yet many other paths were available, negating the isolation.
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Matt
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From: [email protected] <[email protected]> On Behalf Of Karl Shoemaker
Sent: Tuesday, August 22, 2023 6:01 PM
To: [email protected]
Subject: [repeater-builder] insulation shoulder washer
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My source & stock have run out so I'm looking for a source for now and future. My usual Tessco tech site did not come up with them. I’ll try Tally as well. I use them for isolating a rack off the floor so it does not become a "lighting rod".? In the past I’ve just used a plywood plate however, when wet it conducts, of course. I would imagine there's a grounding kit, but all I need are the washers as I have concrete anchors and bolts, etc. An insulating(rubber?) pad would be another item I'd like to locate.
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Regards, Karl Shoemaker
To contact me, please visit SRG's web site at?
for the current email address.
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The Real RFI-EMI-GUY
RFI-EMI-GUY