request for information from Jose Trevino

0478-EX-PL-2008 Text Documents

SAIC

2008-12-18ELS_95263

FCC file number: 0478-EX-PL-2008
Confirmation #: EL397592
Submission Date: 24 November, 2008

Date: 17 December, 2008

Re: Request for information
Correspondence reference # 7829
From: Jose Trevino (Jose.Trevino@fcc.gov)

Dear Jose,

Thank you for your efforts to proceed speedily with our application for an experimental license.
This note is in response to your request for additional information to address Section 8.3.28 of
the NTIA Manual.

1. Our request is for an individual authorization on a fixed device that re-radiates GPS
signals. The re-radiator will be used strictly indoors at the laboratory facility located in
Manassas, Virginia.
2. na – application is not for frequency assignment
3. na – application is not for frequency assignment
4. na – application is not for frequency assignment
5. The repeater space is a single level laboratory and office facility under the strict and
constant control of SAIC. Over the duration of the license, the repeater is expected to be
turned on only during normal working hours though it may be in occasional use during
off-hours, for example the early evening hours or occasional weekend use. It is further
anticipated that the long term average on-time of the repeater would be in the vicinity of
10-20% of a normal working day.
6. The manufacturer of the repeater system is GPS Source, Inc. located in Pueblo, CO.
SAIC has purchased one of their standard L1/L2 repeater kits incorporating 50’ of
premium grade, 50 ohm cable. All calculations supplied by the manufacturer are
presented below and include the cable losses along with the repeater power at the
specified range of 100’. As required, these calculations are for free space propagation
and do not account for any attenuation by the building structure. For the repeater system
to be used, Table I provides the ERP at 100’ as 6.9x10-11 watts which translates to -143
dBm, in compliance with the NTIA requirement.
7. All GPS users within the facility and area of potential interference are being notified of
the repeater installation. SAIC real estate and the facility landlord have been notified.
8. The equipment to be tested will be government furnished military SAASM receiver cards
with some preliminary work with commercial GPS receiver cards. The specific details
regarding manufacturer and model numbers can be supplied if desired.
9. The facility point of contact will be
Brian Hilko
Off: 571-921-3073
Res: 703-765-6512

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Document Created: 2008-12-18 13:34:12
Document Modified: 2008-12-18 13:34:12

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