Federal Communications Commission
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Before the
Federal Communications Commission
Washington, D.C. 20554
In the Matter of 
Spectrum and Service Rules for Ancillary
Terrestrial Components in the 1.6/2.4 GHz 
Big LEO Bands
Globalstar Licensee LLC, 
Authority to Implement an Ancillary Terrestrial 
Component
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IB Docket No. 07-253
Call Sign S2115
SECOND ERRATUM
Released:  May 1, 2008
By the Chief, Policy Division, International Bureau:
1. On April 10, 2008, the Commission released a Report and Order and Order Proposing 
Modification (Globalstar ATC Report and Order), FCC 08-98, in the above-captioned proceeding.  The 
Commission released an Erratum on April 21, 2008 making minor corrections to the Globalstar ATC 
Report and Order. This Second Erratum corrects the third sentence in paragraph 36 to read as follows:
”When the interference is caused by a new or modified ATC station to a pre-existing 
BRS Channel 1 base station, when the interference complaint cannot be mutually 
resolved, the new or modified station must take these measures within 24 hours of receipt 
of the documented interference complaint.”
2. This Second Erratum also corrects § 25.254 in Appendix A by deleting subparagraph 
(a)(5) and inserting paragraph (d) to read as follows:
§ 25.254  Special requirements for ancillary terrestrial components operating in the 1610-
1626.5 MHz/2483.5-2500 MHz bands.
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(d)  To avoid interference to an adjacent channel licensee in the Broadband Radio Service 
(BRS), the power of any ATC base station emission above 2495 MHz shall be attenuated 
below the transmitter power (P) measured in watts in accordance with the standards 
below.  If these measures do not resolve a documented interference complaint received 
from the adjacent channel BRS licensee, the provisions of Section 25.255 shall apply.
(1)  For base stations, the attenuation shall be not less than 43 + 10 log (P) dB at the 
upper edge of the authorized ATC band, unless a documented interference complaint is 
received from an adjacent channel licensee in the BRS.  Provided that a documented 
interference complaint cannot be mutually resolved between the parties, the following 
additional attenuation requirements set forth in subsections (2)-(5) shall apply:
Federal Communications Commission
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(2)  If a pre-existing BRS base station suffers harmful interference from emissions caused 
by a new or modified ATC base station located 1.5 km or more away, within 24 hours of 
the receipt of a documented interference complaint the ATC licensee must attenuate its 
emissions by at least 67 + 10 log (P) dB measured at 3 megahertz above the edge of the 
authorized ATC band, and shall immediately notify the complaining licensee upon 
implementation of the additional attenuation.  
(3)  If a pre-existing BRS base station suffers harmful interference from emissions caused 
by a new or modified ATC base station located less than 1.5 km away, within 24 hours of 
the receipt of a documented interference complaint the ATC licensee must attenuate its 
emissions by at least 67 + 10 log (P) – 20 log(Dkm/1.5) dB measured at 3 megahertz 
above the edge of the authorized ATC band, or if both base stations are co-located, limit 
its undesired signal level at the pre-existing BRS base station receiver(s) to no more than 
-107 dBm measured in a 5.5 megahertz bandwidth and shall immediately notify the 
complaining licensee upon such reduction in the undesired signal level.
(4)  If a new or modified BRS base station suffers harmful interference from emissions 
caused by a pre-existing ATC base station located 1.5 km or more away, within 60 days 
of receipt of a documented interference complaint the licensee of the ATC base station 
must attenuate its base station emissions by at least 67 + 10 log (P) dB measured at 3 
megahertz above the edge of the authorized ATC band.
(5)  If a new or modified BRS base station suffers harmful interference from emissions 
caused by a pre-existing ATC base station located less than 1.5 km away, within 60 days 
of receipt of a documented interference complaint:  (a) the ATC licensee must attenuate 
its base station emissions by at least 67 + 10 log (P) – 20 log(Dkm/1.5) dB measured 3 
megahertz above the edge of the authorized ATC band,  or (b) if both base stations are 
co-located, the ATC licensee must limit its undesired signal level at the new or modified 
BRS base station receiver(s) to no more than -107 dBm measured in a 5.5 megahertz 
bandwidth.
(6)  Compliance with these rules is based on the use of measurement instrumentation 
employing a resolution bandwidth of 1 MHz or greater.  However, in the 1 MHz bands 
immediately above and adjacent to the 2495 MHz a resolution bandwidth of at least one 
percent of the emission bandwidth of the fundamental emission of the transmitter may be 
employed. A narrower resolution bandwidth is permitted in all cases to improve 
measurement accuracy, provided the measured power is integrated over the full required 
measurement bandwidth (i.e., 1 MHz or 1 percent of emission bandwidth, as specified). 
The emission bandwidth is defined as the width of the signal between two points, one 
below the carrier center frequency and one above the carrier center frequency, outside of 
which all emissions are attenuated at least 26 dB below the transmitter power.  When an 
emission outside of the authorized bandwidth causes harmful interference, the 
Commission may, at its discretion, require greater attenuation than specified in this 
section.
FEDERAL COMMUNICATIONS COMMISSION
James Ball
Chief, Policy Division, International Bureau