Manufacturer Declaration Letter

FCC ID: WG8A500

Cover Letter(s)

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FCCID_1954288

FCC Part 15D – APPLICATION FORM & SELF-DECLARATION Applicant Name Clearsounds Communications Inc. Address 1743 Quincy Ave. Unit #155 Naperville, IL, USA Contact person Michele Ahlman Telephone No. 630.654.9200 Fax No. 630.654.9219 Manufacturer Name SHENZHEN G. CREDIT ELECTRONICS CO.,LTD Address Zhida Industrial Park, West Longping RD, Central City, Longgang Town, Shenzhen City, Guangdong Province 518172 China PP FP FCC ID WG8A500 WG8A500 Model Number A500/A500E/A500Bundle A500/ A500Bundle HW version DD2629-ALL-HM02 DD2622-ALL-BM02 SW version D20503VCH21 D20009NB09 Antenna Type Monopole internal Monopole internal Max, Antenna Gain(dBi) 0 0 Mains Power Voltage Adapter Input AC 100~240 V Adapter Output DC 7 V FP Input DC 7 V Battery Voltage DC 3.6 V Number of channels 5 Carrier frequency(MHz) 1921.536 1923.264 1924.992 1926.720 1928.448 Nominal Receive Bandwidth +/- 500KHz Frame period(ms) 10 24 timeslots per frame. First 12 timeslots used for PP Timeslot Plan transmissions and other 12 timeslots used for FP transmissions. 。 Operating Temperature Range( C) Min 0。C Max 40。C Does a system built with the EUT that implement the provisions of 47CFR Yes No 15.323(c) (5) enabling the use of the upper threshold for deferral? According to 47CFR 15.323(c) (5).4, does your model not use bandwidth in further cooperation with other devices at any range? Yes No Does a system built using the EUT that operate under the provisions of 47CFR 25.323(c) (6) incorporating provisions for waiting for a channel to clear? Yes No According to 47CFR 15.323(c) (8), does EUT use the same antennas for transmission and reception as for monitoring? Yes No Does a system built with the EUT that operate under the provisions of 47CFR 15.323(c) (10) to test for deferral only in conjunction with a companion device? Yes No Does a system built using the EUT that operate under the provisions of 47CFR 15.323(c) (11) enabling the access criteria check on the receive channel while

in the presence of collocated interferers? Yes No According to 47CFR 15.323(c) (12), does EUT not work in a mode with denies fair access to spectrum for other devices. Yes No Does you model have the monitoring made through the radio receiver used for Yes No communication? Does your model transmit control and signaling channels? Yes No According to 47CFR 15.307(b), does the applicant have the affidavit from Yes No UTAM Inc.? According to 47CFR 15.319(b), do all transmissions use only digital modulation techniques? Yes No According to FCC Part 15.319(f) Automatic Discontinuation of Transmissiona The device shall automatically discontinue transmission in case of either absence of information to transmit or operational failure. The provisions in this Yes No section are not intended to preclude transmission of control and signaling information or use of repetitive codes used by certain digital technologies to complete frame or burst intervals. The provisions A – Connection break Situation Reaction of EUT within the EUT down, cease of transmit FP PP for self-check, B – Connection break Switch-off compare device N N by which down, EUT transmits its Hook-on by compare device A C compliance signaling information Switch-off by EUT N N with 47CFR C – Connection break Hook-on at EUT side B A 15.319(f) is down, compare device Remove Power from EUT B N obtained. transmits signaling Remove Power from compare N C information device N – Not possible Signature: Michele Ahlman President and CEO 2013-2-28


Document Created: 2013-04-30 14:17:45
Document Modified: 2013-04-30 14:17:45
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