Incoming generated [Oct 22 2013]

0674-EX-PL-2013 Correspondence

Trident Research LLC

2013-10-22ELS_142117

From: Miguel Cardoza

To: Leann Nguyen
Date: October 22, 2013

Subject: FCC File# 0674-EX-PL-2013
----------------------------------------------------------------------------------------------------------------
Message:

8.3.28 Use of Fixed Devices That Re-Radiate Signals Received from the Global Positioning System
Except as otherwise authorized under Part 7.14, federal agencies and departments may, under the
following conditions, operate fixed devices that re-radiate signals received from the Global Positioning
System (GPS).

1. Individual authorization is for indoor use only, and is required for each device at a specific site.
Understood.

2. Applications for frequency assignment should be applied for as an XT station class with a note
indicating the device is to be used as an "Experimental RNSS Test Equipment for the purpose of
testing GPS receivers" and describing how the device will be used.
Understood.

3. Approved applications for frequency assignment will be entered in the GMF.
Understood.

4. The maximum length of the assignment will be two years, with possible renewal.
Understood.

5. The area of potential interference to GPS reception (e.g., military or contractor facility) has to be under
the control of the user.
Understood.

6. The maximum equivalent isotropically radiated power (EIRP) must be such that the calculated
emissions are no greater than -140 dBm/24 MHz as received by an isotropic antenna at a distance of 100
feet (30 meters) from the building where the test is being conducted. The calculations showing
compliance with this requirement must be provided with the application for frequency assignment and
should be based on free space propagation with no allowance for additional attenuation (e.g., building
attenuation.)
SEE EXHIBITS—RADIATING POWER CALCULATIONS

7. GPS users in the area of potential interference to GPS reception must be notified that GPS information
may be impacted for periods of time.
Understood.

8. The use is limited to activity for the purpose of testing RNSS equipment/systems.
Understood.

9. A "Stop Buzzer" point of contact for the authorized device must be identified and available
at all times during GPS re-radiation operation of the device under any condition.
Understood.

Miguel Cardoza
President
Trident Research, LLC
512-215-4552x601
mcardoza@tridentresearch.com

Document Created: 2013-10-22 16:26:38
Document Modified: 2013-10-22 16:26:38

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