They are avoiding the Elephant in the room! They are aware of the noise pollution issue, but are not pointing a finger to the source…Power Line communication technology. The backbone of the smart grid. All of the other things mentioned below are not causing the noise issue “we the hearers” are hearing 24/7 nonstop. The day the digital PLC was turned on was the moment my life changed. Like a light switch it was “ON” and the torture has not stopped since. The infrasound and low frequency pure tones are in our environment all the time. The frequencies are a Public Health Hazard whether you are aware of the noise pollution or not your bodies are absorbing the negative impact this has on humans and animals. We have forensic audio evidence proving this is being done to the majority of the population. Ever wonder why people are acting out in bizarre and aggressive ways?….Hitler used this technique to control his troops using infrasound….Sandaura Does anyone out there care?
Noise Floor: Where Do We Go From Here?
December 12, 2016
|This article summarizes comments that were filed in a noise floor technical inquiry conducted by the Technological Advisory Council of the FCC’s Office of Engineering and Technology. The TAC had asked users of public communications spectrum, including broadcasters, for input to help it set goals for a radio spectrum noise study.
The author is president of Kintronic Labs Inc.; he was invited to prepare this summary for a presentation to the IEEE Broadcast Technology Society. This paper summarizes responses and concludes with the author’s recommendations. A copy also was filed with the commission.
The subject of this paper concerns the licensed and unlicensed users of electromagnetic spectrum and the growing concern over the degradation in achieving reliable (1) analog and HD AM and FM as well as DTV broadcast reception, (2) wireless communications service, (3) amateur radio reception and (4) broadband internet service as a result of a decreasing signal-to-noise ratio due to an apparent increase in the noise floor in the DC to >1 GHz frequency band.It is for this reason that the Federal Communications Commission Technical Advisory Council under the direction of the Office of Engineering and Technology issued a Technical Inquiry under ET Docket No. 16-191 in order to request spectral noise measured data from any and all licensed and unlicensed users of electromagnetic spectrum and to respond to a list of questions that included the following:
The responses to these questions will serve to establish a basis from which the TAC could develop a set of achievable goals to present to the chairman of the FCC to act on in an effort to improve the reliability of broadcast and communication services that are being adversely affected by an increasing noise environment. The responsibility for this noise study will be the responsibility of the TAC Spectrum and Receiver Performance working group that is currently co-chaired by Dr. Greg Lapin, who represents the American Radio Relay League, and Lynn Claudy, senior vice president for technology at the National Association of Broadcasters.
GENERAL RESPONSE SUMMARY TO THE TAC TI
The four [bullets] below illustrate the most widely used services that are affected by the increasing noise floor.
Individuals and companies representing each of these sectors of public communications submitted responses to the TAC TI.
HIGHLIGHTS OF SPECIFIC RESPONDERS
Man-made noise sources fall under one of these three categories and together attribute to the overall spectral noise floor with the highest levels being in the large, metropolitan urban areas and the lowest levels being in the rural areas. The ARRL response noted that Section 15.5 of the FCC rules calls for operators of an interference-causing RF device to cease operating the device if interference to authorized services develops.
Operators should be aware of this rule and seek FCC enforcement with supporting documented evidence.
In addition Chris Imlay, the author of the ARRL response, referred to an IEEE Recommended Practice on the resolution of power line noise complaints (P1987) that is being developed by the IEEE Electromagnetic Compatibility Society Standards Development and Education Committee. This document should be distributed to all operators of broadcast and wireless communications services when available.
II. Society of Broadcast Engineers
The commercially available range of RF devices has expanded significantly resulting in a previously limited range of 30 MHz to 3 GHz as per the current FCC Part 15 and 18 rules to an expanded range up to 70 GHz; hence a review and updating of the current rules relating to noise interference is in order.
The IEEE is in the process of revising Std. 473, a standard on site surveys, which does include test methodology for the measurement of signals and noise at test sites and at locations of equipment. This should be made available to TAC when completed.
SBE recommendations to the TAC:
III. National Association of Broadcasters
The NAB pointed out that (1) FM HD injection was increased from –20 dBc to –10 dBc in some cases due to the need to overcome the ambient noise floor, and (2) numerous VHF DTV stations moved to the UHF band to avoid noise interference issues. These are examples of how the FCC has avoided attacking the real source of the problem, which is a rising noise floor.
NAB’s recommendations to the TAC:
The NAB proposed the following harmful interference levels shown in Table 1 below.
IV. National Public Safety Telecommunications Council
A. 60 lumens/watt for lamps over 40 watts
1. Reported by the New York Department of Transportation: Multi-voltage ballasts for fluorescent lighting in a particular building resulted in noise in the VHF low band, loss of coverage, and garbled transmissions impacting portables, mobiles and base receivers within 50 yards of the building.
2. Industry Canada: Electronic ballasts for fluorescent lights in a nearby store produced 20 MHz wide broadband noise in the 800 MHz cellular band resulting in loss of coverage or dropped calls within 2 km of the store location.
V. State of California Governor’s Office of Emergency Services & Public Safety Communications
In response to the question as to what levels does the noise floor cause harmful interference to particular radio service, CalOES responded with the following levels shown in Table 2 below.
VI. CTIA Representing the U.S. Wireless Communications Industry
B. Unintentional radiators
Commercial Mobile Radio Service is impacted by an increasing noise floor as follows:
Considering the number of cell sites that are presently in operation in the USA, the cost to the service providers in reduced quality of service resulting from noise interference has to be a staggering amount.
AT&T is particularly concerned about the potential impact of noise on small cells sharing a support with LED lights. A single faulty power supply conducting noise through power lines can compromise their network service out to a distance of a half mile, which is a significantly large area.
Harmonics from unintentional radiators, i.e. FM broadcast transmitters, are the greatest noise source impacting AT&T Mobility Services. FM station interference can degrade the uplink signal in the 700–2300 MHz band within 2,000 feet of the station. Also data speeds in the 3–4 GHz range between a computer and other ancillary devices, such as a video display, create harmonics and noise products that interfere with cellphone service.
AT&T recommendations to TAC:
VIII. National Electrical Manufacturers Association
The NEMA response made reference to two publications on the subject of manmade noise measurements in the United Kingdom and in the U.S. [The publications are Wagstaff & Merricks, “Manmade Noise Measurement Programme,” 2009; and Achatz & Dalke, “Man-made Noise Power Measurements at VHF and UHF Frequencies,” NTIA Report 02-390, US Department of Commerce, 2001.]
As a result the noise measurements were found to be in good agreement for the most part and resulted in the following recorded noise floor levels as shown in Table 3 below.
This data clearly shows that the Medium-Frequency AM band is significantly more affected by the noise floor than the VHF, UHF or mobile cellphone service bands. A reduction of 9–11 dB in the noise floor level is realized between the city and rural environments over the 300 kHz to 100MHz band.
SUMMARY AND CONCLUSIONS
Furthermore in these times of natural disasters, war or terrorist activities, secure, clear wireless communications are of the utmost importance. The growing vulnerability of the internet to hackers has to be causing our government, military and the banking industry to consider other forms of communication that are more secure. We cannot afford to allow the producers of products with associated RF emissions in our limited electromagnetic spectrum to be proliferated without regulatory action. The matter of our understanding the noise floor versus frequency and what sources contribute to it is of great strategic importance to assure reliable and secure public communications for the safety of all citizens of the USA. The SBE response made reference to the following statement: “It would be impossible for the commission to engage in effective spectrum management until it develops a more complete understanding of the current state of the radio noise environment.” [FCC TAC, Second Meeting Report at 1, 9 (Oct 28, 1999).] This further substantiates the need for the noise floor study.
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