DexCom, Inc.

FEDERAL COMMUNICATIONS COMMISSION APPLICATION FOR SPECIAL TEMPORARY AUTHORITY

Applicant Name

Name of Applicant:

DexCom, Inc.

Address

Attention:	Jake Leach
Street Address:	5555 Oberlin Drive
P.O. Box:
City:	San Diego
State:	CA
Zip Code:	92121
Country:
E-Mail Address:	[email protected]

Best Contact

Give the following information of person who can best handle inquiries pertaining to this application:   Last Name: Terry First Name: Ryan Title: Telecommunications Specialist Phone Number: 202-429-4900

Explanation

Please explain in the area below why an STA is necessary: DexCom, Inc. (DexCom), in accordance with Section 5.61 of the Commissions rules, herein seeks Special Temporary Authority (STA) for a period of six (6) months to operate up to 500 unique Medical Implant Communications Service (MICS) devices. As intentional radiators, albeit at very small power levels, MICS devices are not permitted to operate under the Commissions rules, even for the purposes of testing and demonstration, absent an equipment authorization. Accordingly, DexCom herein seeks experimental STA to permit it to operate the devices at various home environments in 17 different metropolitan areas in the United States. DexComs request for STA is supported by good cause. DexCom is seeking to initiate use of its medical implant devices in order to gather feedback from medical patients who suffer from diabetes as well as the physicians who treat them. The information garnered from the operation of these devices will permit DexCom to improve performance of the devices, enabling the company to continue to make modifications to its MICS chips before marketing the device. DexCom is performing these experimental operations in anticipation of filing an application seeking authority under the Commissions equipment authorization rules in the near future. To this end, DexCom maintains that this request is in the public interest.

Purpose of Operation

Please explain the purpose of operation:

MICS device study required by FDA. DexCom is a manufacturer of MICS devices and seeks authority to perform up to 500 unique tests of the devices in either short-term or long-term phases in home environments. In either phase of use, the devices -- consisting of a MICS transmitter and small receiver -- are operated on a single frequency within a 5 foot radius around the body and worn against the body. The medical patients who would be the subjects of this experimental period are affiliated with medical facilities throughout the United States. Accordingly, DexCom seeks authority for operation of these devices within the metropolitan areas of the facilities identified in Attachment A, noting that the actual use of the devices will take place in the homes of patients. As the devices operate on extremely low transmitting power, DexCom maintains that there is no potential for interference with other devices in the adjacent spectrum.

Information

Callsign:	WC9XED
Class of Station:	MO
Nature of Service:	Experimental

Requested Period of Operation

Operation Start Date:	06/01/2005
Operation End Date:	12/01/2005

Manufacturer

List below transmitting equipment to be installed (if experimental, so state) if additional rows are required, please submit equipment list as an exhibit:
Manufacturer	Model Number	No. Of Units	Experimental
DexCom	CGM	500	Yes

Certification

Neither the applicant nor any other party to the application is subject to a denial of Federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. Section 862, because of a conviction for possession or distribution of a controlled substance. The applicant hereby waives any claim to the use of any particular frequency or electromagnetic spectrum as against the regulatory power of the United States because of the prvious use of the same, whether by license or otherwise, and requests authorization in accordance with this application. (See Section 304 of the Communications Act of 1934, as amended.) The applicant acknowledges that all statements made in this application and attached exhibits are considered material representations, and that all the exhibits part hereof and are incorporated herein as if set out in full in this application; undersigned certifies that all statements in this application are true, complete and correct to the best of his/her knowledge and belief and are made in good faith. Applicant certifies that construction of the station would NOT be an action which is likely to have a significant environmental effect. See the Commission's Rules, 47 CFR1.1301-1.1319.

Signature of Applicant (Authorized person filing form):	Steve Kemper
Title of Applicant (if any):
Date:	2005-05-11 00:00:00.0

Station Location

	City	State	Latitude	Longitude	Mobile	Radius of Operation
					Various location in accordance with Attachment A

Datum:  NAD 83 Is a directional antenna (other than radar) used?   No Exhibit submitted:   No (a) Width of beam in degrees at the half-power point:   (b) Orientation in horizontal plane:   (c) Orientation in vertical plane:   Will the antenna extend more than 6 meters above the ground, or if mounted on an existing building, will it extend more than 6 meters above the building, or will the proposed antenna be mounted on an existing structure other than a building?   No (a) Overall height above ground to tip of antenna in meters:   (b) Elevation of ground at antenna site above mean sea level in meters:   (c) Distance to nearest aircraft landing area in kilometers:   (d) List any natural formations of existing man-made structures (hills, trees, water tanks, towers, etc.) which, in the opinion of the applicant, would tend to shield the antenna from aircraft:

Action	Frequency	Station Class	Output Power/ERP	Mean Peak	Frequency Tolerance (+/-)	Emission Designator	Modulating Signal
New	402.14200000- MHz	MO	25.000000 uW 25.000000 uW	P		100KF1D	5.8 msec cycle/300 sec

Action	Frequency	Station Class	Output Power/ERP	Mean Peak	Frequency Tolerance (+/-)	Emission Designator	Modulating Signal
New	402.14200000- MHz	MO	25.000000 uW 25.000000 uW	P		100KF2D	5.8 msec cycle/300 sec

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