**DA 07-1564**

**Released: March 30, 2007**

**Office of Engineering and Technology**

**sEEKS COMMENT ON MEASUREMENT REPORT of dTV RECEIVER interference
rejection capabilities**

**ET Docket No. 04-186**

**Comments due: April 30, 2007**

**Reply comments due: May 15, 2007**

On October 12, 2006, the Commission adopted a First Report and Order and
Further Notice of Proposed Rule Making in ET Docket Nos. 04-186 and
02-380 to permit the operation of new low power devices in the broadcast
television spectrum on channels/frequencies that are not being used for
authorized services. In that action, the Commission also stated that its
Laboratory was conducting a testing program to quantify the interference
rejection capabilities of DTV receivers and intends to issue a report of
the results of these measurements by March 2007.

The Commission's Laboratory recently completed this testing program and
released a report of the measurement results:

-   The testing program examined the out-of-channel interference
    rejection performance of a representative sample of eight DTV
    receivers with fifth generation tuners that were available in 2005
    and 2006.

-   A total of 2055 individual measurements were performed on these
    receivers.

\- Each test involved feeding a desired signal to the television under
test and injecting an interfering signal on a different channel or
combination of channels. The different tests varied the level of the
desired signal and interfering signal(s).

\- The results show the interference rejection capabilities of the DTV
receivers that were tested.

\- The information from these tests is generally useful to analyze the
potential for interference to DTV broadcasts from out-of-band signals.
However this information is only one element of many that must be
examined in evaluating the possibilities for operation of new low power
devices in unused portions of the TV broadcast bands.

This report is available through the Commission's Electronic Comment
Filing System (ECFS) at <http://www.fcc.gov/cgb/ecfs/>. It is also
available on the Commission's web site at
[www.fcc.gov/oet/](http://www.fcc.gov/oet/).

Interested parties may file comments on this report no later than April
30, 2007. Reply comments are due no later than May 15, 2007. All filings
should reference ET Docket No. 04-186.

Comments may be filed using: (1) the Commission's Electronic Comment
Filing System (ECFS), (2) the Federal Government's eRulemaking Portal,
or (3) paper copies. *See Electronic Filing of Documents in Rulemaking
Proceedings*, 63 FR 24121 (1998).

-   Electronic Filers: Comments may be filed electronically using the
    Internet by accessing the ECFS: <http://www.fcc.gov/cgb/ecfs/> or
    the Federal eRulemaking Portal:
    [http://www.regulations.gov](http://www.regulations.gov/). Filers
    should follow the instructions provided on the website for
    submitting comments.

-   For ECFS filers, if multiple docket or rulemaking numbers appear in
    the caption of this proceeding, filers must transmit one electronic
    copy of the comments for each docket or rulemaking number referenced
    in the caption. In completing the transmittal screen, filers should
    include their full name, U.S. Postal Service mailing address, and
    the applicable docket or rulemaking number. Parties may also submit
    an electronic comment by Internet e-mail. To get filing
    instructions, filers should send an e-mail to <ecfs@fcc.gov>, and
    include the following words in the body of the message, "get form."
    A sample form and directions will be sent in response.

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-   Paper Filers: Parties who choose to file by paper must file an
    original and four copies of each filing. If more than one docket or
    rulemaking number appears in the caption of this proceeding, filers
    must submit two additional copies for each additional docket or
    rulemaking number.

> Filings can be sent by hand or messenger delivery, by commercial
> overnight courier, or by first-class or overnight U.S. Postal Service
> mail (although we continue to experience delays in receiving U.S.
> Postal Service mail). All filings must be addressed to the
> Commission's Secretary, Office of the Secretary, Federal
> Communications Commission.

-   The Commission's contractor will receive hand-delivered or
    messenger-delivered paper filings for the Commission's Secretary at
    236 Massachusetts Avenue, NE, Suite 110, Washington, DC 20002. The
    filing hours at this location are 8:00 a.m. to 7:00 p.m. All hand
    deliveries must be held together with rubber bands or fasteners. Any
    envelopes must be disposed of [before]{.underline} entering the
    building.

-   Commercial overnight mail (other than U.S. Postal Service Express
    Mail and Priority Mail) must be sent to 9300 East Hampton Drive,
    Capitol Heights, MD 20743.

-   U.S. Postal Service first-class, Express, and Priority mail must be
    addressed to 445 12^th^ Street, SW, Washington DC 20554.

People with Disabilities: To request materials in accessible formats for
people with disabilities (braille, large print, electronic files, audio
format), send an e-mail to <fcc504@fcc.gov> or call the Consumer &
Governmental Affairs Bureau at 202-418-0530 (voice), 202-418-0432 (tty).

For questions concerning the DTV receiver measurement report, please
contact Mr. Steve Martin, (301) 362-3052, e-mail <Steve.Martin@fcc.gov>.
For further information concerning this public notice, please contact
Mr. Hugh L. Van Tuyl, (202) 418-7506, e-mail <Hugh.VanTuyl@fcc.gov>.

Chief, Office of Engineering and Technology.

­-OET­-