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Re: [RFI] medical lab RFI

To: rfi@contesting.com
Subject: Re: [RFI] medical lab RFI
From: Steve Maki <steve@k8lx.org>
Date: Wed, 19 Jul 2023 21:30:58 -0400
List-post: <mailto:rfi@contesting.com>
Hi Jim,

In less populated areas (actually all areas) the 700 MHz, 800 MHz, 1.7/2.1 GHz (AWS), and 1.9 GHz bands are *prime* real estate for the telcos, including 5G tech. In densely populated areas there's a lot of data traffic on 2.5 & 3.5 GHz, and some on 28 gHz.

-Steve K8LX

On 07/19/23 7:31 PM, Jim Brown wrote:
On 7/19/2023 3:20 PM, Gene Smar via RFI wrote:
  Maybe your peer's friend can call his electric utility company's RFI finder person.

I could be wrong, but I think 2.4 Gig is the lowest frequency range used by cell phones in NA, and the sites use antennas with a very narrow vertical pattern, designed to shoot over the heads of folks in the near field. Unless one of the antennas is very close and fairly low with respect to the victim, the most likely RFI would seem to be radiated by poorly shielded electronics or power supplies. The latter is what I'd expect the power guys to know about.

73, Jim K9YC
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