by Brianna Crandall — May 5, 2017 — Watchfire Signs, a manufacturer of outdoor light-emitting diode (LED) signs and digital billboards, has published a white paper that alleges widespread electromagnetic interference from imported digital signs and billboards that can impact everything from cell phones to aviation towers. According to Watchfire, sign owners have faced forced shut-down of non-compliant signs along with the prospect of large fines from the FCC.
The newly released white paper reveals the discovery that Asian-manufactured LED signs and digital billboards are emitting electromagnetic interference at levels that dramatically surpass Federal Communications Commission (FCC) limits. The white paper goes on to detail the disregard and in some cases outright cheating on FCC testing requirements by importers.
Steve Harriott, president and CEO of Watchfire Signs, stated:
We have discovered that a number of companies are importing LED signs from Asia and assembling and distributing them in the United States, but the signs are not compliant with FCC regulations for electromagnetic emissions. This puts any consumer who has purchased from these companies, or is considering a purchase, at immediate risk of being forced to disable their LED signs and face fines from the FCC.
According to the white paper, the FCC requires that electronic equipment, such as digital signs, be tested in a worst-case scenario to ensure compliance with emissions limits and to show that the equipment won’t cause harmful electromagnetic interference to other devices. The specific section of the FCC code that governs digital signs resides in Title 47, Part 15, Class A.
The FCC does not perform the testing itself, and requires that manufacturers receive verification of the final product from an accredited third-party testing lab. Despite these regulations, many importers don’t have their digital signs tested, test them under a special “cheat” mode, or fail the test altogether. Despite failing emissions verification, some manufacturers have continued to sell their products in the United States to unsuspecting buyers, who then bear the burden of the FCC sanctions, Watchfire alleges.
Harriott said further:
Every Watchfire product has this verification. FCC Part 15 testing of a complete sign is not an optional step in the process. What’s even more troubling is evidence that some importers are temporarily altering their LED signs with a “cheat mode” to pass testing, and then changing them back for shipping and installation. It’s clear that those reselling imports should be on notice that these manufacturers cannot be trusted to self-verify for FCC compliance. This is unscrupulous and could have a detrimental effect on our entire industry.
The white paper details FCC testing requirements and explains the design flaw present in most digital signs manufactured in Asia, which Watchfire points out is not repairable in the field.
The issue is inherent in their design, and no firmware fix or field adjustment can reduce their emissions to an acceptable level. They are using an architecture that relies on poor design to produce cheap signs, and sadly it will be the sign owners who suffer for it.
The paper also instructs owners and those considering a purchase of an LED sign or digital billboard about the questions to ask to ensure the sign they are buying is in compliance with FCC regulations.
The white paper, Subversive Manufacturers Could Ruin Your Business: Operators Face Fines and Shutdowns Due To FCC Cheat, can be downloaded at no cost from the Watchfire Signs Web site.
Watchfire Signs designs, engineers and manufactures attractive, durable outdoor LED signs and digital billboards to help businesses and organizations increase visibility and drive growth. Headquartered in Danville, Illinois, Watchfire has manufactured outdoor electric signs since 1932 and LED signs since 1996.