The situation is technically not good, but in practical terms is
tolerable, I suppose, because such EMI incidents are rather rare, so
up-front avoidance measures are not economically justified. Luckily, we
have EMI experts to diagnose and fix such problems as they occur.
On 2025-03-23 17:08, Ralph McDiarmid wrote:
I agree Ken.Unfortunately, installation companies don’t have that
degree of technical prowess or care, they just go in, do a job as fast
as possible, and move on.The owner of the gas station would be
oblivious to the EMC concern.
Ralph
*From:*Ken Javor <[email protected]>
*Sent:* March 22, 2025 4:51 PM
*To:* [email protected]
*Subject:* Re: [PSES] Tracking down interference at 915 MHz
Nice. Seems as if a simpler fix would be a set of directional antennas
for the gas station’s 915 MHz link, yielding higher intentional signal
and if the antennas are properly oriented relative to the suspected
interference source, diminishing the interference level.
--
Ken Javor
Ph: (256) 650-5261
*From: *Ken Wyatt <[email protected]>
*Reply-To: ****** IEEE emc-pstc List ***** <[email protected]>
*Date: *Saturday, March 22, 2025 at 3:35 PM
*To: *<[email protected]>
*Subject: *[PSES] Tracking down interference at 915 MHz
Hi All,
I thought this interference hunt to a gas station price sign might be
of interest to the group.
https://www.testandmeasurementtips.com/spectrum-measurements-shed-light-on-sign-malfunctions/
Cheers, Ken
_______________________
I'm here to help you succeed! Feel free to call or email with
any questions related to EMC or EMI troubleshooting - at no
obligation. I'm always happy to help!
Kenneth Wyatt
Wyatt Technical Services LLC
8201 Lighthouse Lane Ct
Windsor, CO 80528
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