Correspondence Summary

FCC ID: TQ4YWGIT-R5678904

Cover Letter(s)

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FCCID_1046022

Correspondence Summary December 18, 2008 SUBJECT: INVENGO INFORMATION TECHNOLOGY CO., LTD. - FCC ID: TQ4YWGIT-R5678904 TCB question: 1. Part 15.203: You reply indicates that the device use SMA-N? SMA and N type connectors are not considered unique. The FCC requires a unique coupling between antenna, coaxial cable, and transmitter. Please explain. Alternatively, the applicant could show that the device satisfies the FCC’s Professional Installation requirements. Please have the applicant provides a justification letter with the following information: - To qualify for professional installation, the applicant must explain why the hardware cannot simply be purchased and installed by the average (technically inclined) person 1) Marketing - The device cannot be sold retail, to the general public, or by mail order. It must be sold to dealers. 2) Requires professional installation; - installation must be controlled. - installed by licensed professionals ( EUT sold to dealer who hire installers) - installation requires special training ( special programming, access to keypad, field strength measurements made) - What is unique, sophisticated, complex, or specialized about your equipment which REQUIRES it to be installed by a professional installer? 3) Application -The intended use is generally not for the general public. It is generally for industry/commercial use. Applicant’s Answer: The device don't use SMA connector, it using a special type of inverse N-KFD-3 connector. The used connector for the device don't a standard jack, it only have been made to order by the applicant for the device. So, it is comply with FCC part 15.203 requirement. TCB question: 1. Please explain whether this reader sends modulated signals to tags. The Operational description appears to indicate that the modulation is ASK. The

definition of a frequency hopping spread spectrum (FHSS) system in Section 2.1 requires that the carrier of a frequency hopping system be modulated with coded information. The reader must be able to write to, and read information from, the passive tag. Applicant’s Answer: --Yes, the reader use modulation is ASK. It can write to, and read information. But only write to information use special software. TCB question: 2. Section 15.247(a)(1) requires the transmit bandwidth to match the receiver bandwidth. The reader transmit bandwidth must match the reader receiver bandwidth and so the uplink and downlink bandwidths have to be the same. Please explain if this is true for this RFID Reader. Applicant’s Answer: --Yes, the RFID Reader TX bandwidth match the RX bandwidth. TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 tei@timcoengr.com


Document Created: 2008-12-18 11:17:43
Document Modified: 2008-12-18 11:17:43
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