CHANGE LETTER

FCC ID: FIH05682

Cover Letter(s)

Download: PDF
FCCID_1109889

ROGERS LABS, INC. 4405 West 259th Terrace Louisburg, KS 66053 Phone / Fax (913) 837-3214 May 12, 2009 Timco Engineering Inc. Federal Communications Commission 849 NW State Road 45 Equipment Approval Services Newberry, FL 32669 Pittsburgh, PA 15251-3315 Applicant: Transcore Amtech Technology Center 8600 Jefferson Street NE Albuquerque, New Mexico 87113 Equipment: FCC ID: FIH05682 FCC Rules: Class 2 Permissible change to certified equipment operating under CFR47 Part 2 and 15.249 Gentlemen The form 731 and application information for the class 2 permissible change have been electronically submitted and any attachments will be up loaded to your web site to be used in obtaining a grant of certification. Change to equipment Modulation of the output signal is provided by the Mod_Enable signal. A shunt capacitor, marked Cload in the above figure, in conjunction with the series resistors, provides filtering of the signal for edge-rate control. It was determined through field testing that system performance could be improved if the transition times of the modulation edges were reduced. This was accomplished by eliminating Cload from the parts list and simply not loading the component during manufacturing; the PWB remains unchanged. The decreased rise and fall times are the source of the increased occupied bandwidth. The occupied bandwidth, while increased, is still in compliance with regulations. Should you require any further information, please contact the undersigned. Thank you for your consideration in this matter. Sincerely, Scot Rogers Rogers Labs, Inc. Enclosures


Document Created: 2009-05-12 12:38:10
Document Modified: 2009-05-12 12:38:10
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