Click here for Adobe Acrobat version


This document was converted from Microsoft Word.

Content from the original version of the document such as
headers, footers, footnotes, endnotes, graphics, and page numbers
will not show up in this text version.

All text attributes such as bold, italic, underlining, etc. from the
original document will not show up in this text version.

Features of the original document layout such as
columns, tables, line and letter spacing, pagination, and margins
will not be preserved in the text version.

If you need the complete document, download the
Microsoft Word or Adobe Acrobat version.



   June 18, 2012

   (Name withheld)

   (Address withheld)

   (Address witheheld)

   Re: Radio Frequency Interference


   Dear (Name withheld):

   The Federal Communications Commission notified you by letter dated
   February 15, 2012, that a doorbell transformer being operated in your home
   may be causing harmful radio interference to an operator in the Amateur
   Radio Service. The complainant is:

   (Name withheld)

   (Address withheld)

   (Address withheld)

   The Commission has the responsibility to require that such problems be
   rectified within a reasonable time if the interference is caused by faulty
   consumer equipment. Under Commission rules, certain types of equipment are
   classified as "unintentional emitters." These devices generate radio
   frequency energy but do not intentionally radiate it. Examples include
   computers, radio receivers and television sets. Other types of devices are
   classified as "incidental emitters." These devices do not intentionally
   generate any radio-frequency energy, but that may create such energy as an
   incidental part of their intended operation. Common examples include
   aquarium heaters, certain portable telephones, alarm control panels,
   fluorescent light ballasts, doorbell control circuits and so forth. Some
   unintentional emitters are imported and do not comply with Commission
   certification standards, and thereby result in interference to other radio
   services. Your doorbell transformer may be one of those devices. If the
   device is an approved one, it should have a silver FCC label on the unit
   showing a certification number. Even an approved device, however, can only
   be operated legally if it is not causing harmful interference to a
   licensed radio service.

   The complainant has attempted unsuccessfully to resolve this problem and
   as a result the matter has been referred to our office. The Commission
   prefers that those responsible for the proper operation of equipment
   assume their responsibilities fairly. This means that you should resolve
   the interference caused by the device and make necessary corrections
   within a reasonable time. The February 15, 2012, letter specifically
   stated, however, that if it became necessary for the Commission to
   facilitate a resolution, the Commission might investigate possible rule
   violations and address appropriate remedies, including monetary

   You have not yet responded to the February 15, 2012 letter. Lack of
   response to the Commission's letter is not acceptable. In order to avoid
   enforcement action on this matter, you have thirty (30) days from the date
   of receipt of this letter to respond to this office at the following
   address: 1270 Fairfield Road, Gettysburg, PA 17325. The response must
   contain a statement of the specific action(s) taken to eliminate the
   source(s) of (name withheld) radio interference. If you have any questions
   about this matter, please contact me at 717-338-2577.


   Laura L. Smith, Esq.

   Special Counsel

   Enforcement Bureau

   cc: San Francisco Field Office

   Western Regional Director

   Fines normally range from $7,500 to $10,000.