JIL2788B787-788MHz Licensed MAS Radio

Preliminary Release Alligator Communications Model 2788 Technical Manual REV2.3 Copyright © 2019 Page 1 Model 2788 MAS Ethernet/RS-232 UHF Radio Transceiver Technical Manual Preliminary Release Alligator Communications Model 2788 Technical Manual REV2.3 Copyright © 2019 Page 2 REVISION HISTORY REV DESCRIPTION DATE 1 Initial Release 10/15/2018 Preliminary Release Alligator Communications Model 2788 Technical Manual REV2.3 Copyright © 2019 Page 3 Paragraph Contents Page 1. 5 1.1 General Description5 1.2 Applications5 1.3 Technical Specifications6 1.4 Warranty8 1.5 Claims for damage in shipment8 1.6 Information to user, as required by FCC section 15.219 1.7 RF exposure information9 2.0 Radio Configuration and Operational Check10 2.1 General Discussion10 2.2 Operational Bench Test10 2.2.1 Antenna Connector10 2.2.2 Power Connector11 2.2.3 Initial Checkout11 3.0 Field Configuration and Verification15 3.1 15 4.0 Front Panel Indicators17 5.0 User Configuration and Diagnostic Menu18 5.1 18 5.2 18 5.3 18 5.4 19 5.5 19 5.6 19 5.7 19 5.8 19 5.9 20 5.10 Subnet Mask20 5.11 RS-232 Data Rate20 5.12 Anti-streaming Timer20 5.13 Telnet Session Activity Timer20 Preliminary Release Alligator Communications Model 2788 Technical Manual REV2.3 Copyright © 2019 Page 4 5.14 Log-in Session Activity Timer20 5.15 Enable Transmitter21 5.16 Enable Encryption21 5.17 Enable Password Entry21 5.18 ID (Identification Number)21 5.19 Password21 5.20 ES Encryption Phrase21 5.21 Log Out22 5.22 Quit Telnet22 5.23 Forwarding Mode22 5.24 Remote RTU0 MAC Address22 5.25 Remote RTU1 MAC Address23 5.26 Master RTU MAC Address Table23 5.27 Host MAC Address Table23 5.28 High QOS (Quality Of Service) IP Address Table23 5.29 Loopback Remote MAC Address24 5.30 Diagnostic Tests24 5.31 Display Status Screen25 5.32 Display RTU Table25 5.33 Display Host Table25 5.34 Display QIP Table25 6.0 Theory of Operation26 6.1 RS-232 Communications26 6.2 Ethernet Communications26 6.2.1 Packet Forwarding26 6.2.2 Telnet Radio Configuration and Diagnostics27 6.2.3 Graphics Heavy Communications27 6.2.4 High QOS (Quality Of Service) IP Communications27 Preliminary Release Alligator Communications Model 2788 Technical Manual REV2.3 Copyright © 2019 Page 5 Introduction Thank you for purchasing the Alligator Model 2788 UHF Radio Transceiver. We are here to assist you personally should any questions arise in the installation or operation of this product. Please feel free to call us. We look forward to your feedback and will strive to make our product as compliant with your specific needs as possible. 1.1 General Description The Alligator Communications Model 2788 is a microprocessor-controlled data radio transceiver designed to operate in accordance with FCC rules, Parts 27 and 90 The 2788 data radio is frequency synthesized and programmable to individual transmitter and receiver frequencies in the 757 and 788 MHz frequency band. The transceiver is a fixed channel, half- duplex radio available with a channel bandwidth of 12.5 kHz and up to 100 kHz. It interfaces with both Ethernet and RS-232. 1.2 Applications The 2788 data radio is designed for point-to-multipoint or point-to-point licensed operations in the 700 MHz band. Some of the most common applications are:  Electric Utility Substation SCADA  Pipeline Flow Monitors  Energy Distribution & Metering Applications  Gas or Petroleum Production Well Head Control and Monitoring  Water Distribution and Waste Water Collection Control and Monitoring  Petroleum Production, Transmission, Storage and Distribution  Railroad Preliminary Release Alligator Communications Model 2788 Technical Manual REV2.3 Copyright © 2019 Page 6 1.3 Technical Specifications GENERAL Frequency 787-788 MHz Input Voltage 10-24 Vdc Current Consumption (at 13.8 Vdc) <80 mA Receive Mode 100 mA Transmit Mode (0.2 Watts) < 0.5 A Data Rate 9600 bps to 38.4 kbps Connectors Antenna Type N female Power 2-pin Captive, Rectangular Data (RS-232) DB9F Environment Temperature -30°C to +50°C Humidity 95% at 40°C Dimensions 6.75” x 1.5” x 5.75” Weight 2 pounds Preliminary Release Alligator Communications Model 2788 Technical Manual REV2.3 Copyright © 2019 Page 7 TRANSMITTER RF Power 2 W Impedance 50 Ohms Frequency Range 757-758 MHz Frequency Step Size 1 Hz Frequency Stability ±1 ppm Modulation 4GFSK Symbol Rate 4800 Hz** Data Rate 9600 bps Maximum Frequency Deviation 2400 Hz** Attack Time <1 msec Release Time <0.5 msec Bandwidth 6.25, 12.5, 25, or 50 kHz** RECEIVER Input Sensitivity -117 dBm at 10 -6 BER Impedance 50 Ohms Frequency Range 757-758 MHz Frequency Step Size 1 Hz Frequency Stability ±1 ppm Selectivity 100 dB Desensitization -60 dB Intermodulation -75 dB (EIA) Spurious Image Rejection -80 dB Bandwidth 6.25, 12.5, 25, or 50 kHz** Preliminary Release Alligator Communications Model 2788 Technical Manual REV2.3 Copyright © 2019 Page 8 deviation 1.4 Warranty Alligator Communications, Inc., warrants each of the instruments of its manufacture to meet the specifications when delivered to the BUYER; and to be free from defects in material and workmanship. Alligator Communications will repair or replace, at its expense, for a period of one year from the date of delivery of equipment, any parts that are defective from faulty material or poor workmanship. This Warranty does not cover equipment which has been misused and/or altered by the user. Instruments found to be defective during the warranty period shall be returned to the factory with transportation charges prepaid by the BUYER. It is expressly agreed that replacement and repair shall be the sole remedy of the SELLER with respect to any defective equipment and parts hereof and shall be in lieu of any other remedy available by applicable law. All returns to the factory must be authorized by the SELLER, prior to such returns. Upon examination by the factory, if any instrument is found to be defective, the unit will be repaired and returned to the BUYER, with transportation charges prepaid by the SELLER.…

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Report No: CCISE191201501 Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912015 No. B-C, 1/F., Building 2, Laodong No.2 Industrial Park, Xixiang Road, Bao’an District, Shenzhen, Guangdong, China Telephone: +86 (0) 755 23118282 Fax: +86 (0) 755 23116366 Page 30 of 35 8 EUT Constructional Details Report No: CCISE191201501 Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912015 No. B-C, 1/F., Building 2, Laodong No.2 Industrial Park, Xixiang Road, Bao’an District, Shenzhen, Guangdong, China Telephone: +86 (0) 755 23118282 Fax: +86 (0) 755 23116366 Page 31 of 35 Report No: CCISE191201501 Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912015 No. B-C, 1/F., Building 2, Laodong No.2 Industrial Park, Xixiang Road, Bao’an District, Shenzhen, Guangdong, China Telephone: +86 (0) 755 23118282 Fax: +86 (0) 755 23116366 Page 32 of 35

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Report No: CCISE191201501 Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912015 No. B-C, 1/F., Building 2, Laodong No.2 Industrial Park, Xixiang Road, Bao’an District, Shenzhen, Guangdong, China Telephone: +86 (0) 755 23118282 Fax: +86 (0) 755 23116366 Page 33 of 35 Report No: CCISE191201501 Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912015 No. B-C, 1/F., Building 2, Laodong No.2 Industrial Park, Xixiang Road, Bao’an District, Shenzhen, Guangdong, China Telephone: +86 (0) 755 23118282 Fax: +86 (0) 755 23116366 Page 34 of 35 Report No: CCISE191201501 Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912015 No. B-C, 1/F., Building 2, Laodong No.2 Industrial Park, Xixiang Road, Bao’an District, Shenzhen, Guangdong, China Telephone: +86 (0) 755 23118282 Fax: +86 (0) 755 23116366 Page 35 of 35 ------End of report------

Shenzhen Zhongjian Nanfang Testing Co., Ltd. Prediction of MPE at a given distance 1. Limits The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 2. Test Procedure Equation from page 18 of OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to the antenna G = numeric gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the centre of radiation of the antenna Shenzhen Zhongjian Nanfang Testing Co., Ltd. 3. Result Note: Just the worst case mode was shown in report. 4. Conclusion The device is exempt from the RF exposure evaluation. Frequency (MHz) Maximum Output power (dBm) Maximum Output power (mW) Antenna Gain (dBi) Antenna Gain (numeric) Distance (cm) Result (mW/cm 2 ) Limits for General Population/ Uncontrolled Exposure (mW/cm 2 ) 757 MHz-787 MHz 787.025 34.61 2890.68 10 10 100.00 0.23 0.525

Shenzhen Zhongjian Nanfang Testing Co., Ltd. Report No: CCISE191201501 Authorized Signature: Bruce Zhang Laboratory Manager This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product and does not permit the use of the CCIS product certification mark. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in this report. This report may only be reproduced and distributed in full. If the product in this report is used in any configuration other than that detailed in the report, the manufacturer must ensure the new system complies with all relevant standards. This document cannot be reproduced except in full, without prior written approval of the Company. Any unauthorized alteration, forgery or falsification of the content or appearance of this document is unlawful and offenders may be prosecuted to the fullest extent of the law. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested and such sample(s) are retained for 90 days only. 1. Cover Page FCC REPORT Applicant: Alligator Communications, Inc. Address of Applicant: 1400 Coleman Avenue, Santa Clara, CA 95050. Equipment Under Test (EUT) Product Name: 787-788 MHz Licensed MAS Radio Model No.: 2788B FCC ID: JIL2788B Applicable standards: FCC CFR Title 47 Part 2 FCC CFR Title 47 Part 27 Subpart G Date of sample receipt: 08 Apr., 2019 Date of Test: 09 Apr., to 11 Dec., 2019 Date of report issued: 12 Dec., 2019 Test Result: PASS* * In the configuration tested, the EUT complied with the standards specified above. Report No: CCISE191201501 Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912015 No. B-C, 1/F., Building 2, Laodong No.2 Industrial Park, Xixiang Road, Bao’an District, Shenzhen, Guangdong, China Telephone: +86 (0) 755 23118282 Fax: +86 (0) 755 23116366 Page 2 of 35 2. Version Version No. Date Description 00 12 Dec., 2019 Original Tested by: Date: 12 Dec., 2019 Test Engineer Reviewed by: Date: 12 Dec., 2019 Project Engineer Report No: CCISE191201501 Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912015 No. B-C, 1/F., Building 2, Laodong No.2 Industrial Park, Xixiang Road, Bao’an District, Shenzhen, Guangdong, China Telephone: +86 (0) 755 23118282 Fax: +86 (0) 755 23116366 Page 3 of 35 3. Contents Page 1. COVER PAGE .............................................................................................................................................................. 1 2. VERSION ....................................................................................................................................................................... 2 3. CONTENTS ................................................................................................................................................................... 3 4. TEST SUMMARY ......................................................................................................................................................... 4 5. GENERAL INFORMATION ........................................................................................................................................ 5 5.1 CLIENT INFORMATION ............................................................................................................................................ 5 5.2 GENERAL DESCRIPTION OF E.U.T. ....................................................................................................................... 5 5.3 TEST MODES .......................................................................................................................................................... 5 5.4 DESCRIPTION OF SUPPORT UNITS ........................................................................................................................ 5 5.5 MEASUREMENT UNCERTAINTY .............................................................................................................................. 6 5.6 LABORATORY FACILITY .......................................................................................................................................... 6 5.7 LABORATORY LOCATION ....................................................................................................................................... 6 5.8 TEST INSTRUMENTS LIST ....................................................................................................................................... 7 6. TEST RESULTS ........................................................................................................................................................... 8 6.1 RF OUTPUT POWER, ERP .................................................................................................................................... 8 6.2 OCCUPIED BANDWIDTH ....................................................................................................................................... 11 6.3 OUT OF BAND EMISSION AT ANTENNA TERMINALS .............................................................................................. 17 6.4 FIELD STRENGTH OF SPURIOUS RADIATION MEASUREMENT ............................................................................... 24 6.5 FREQUENCY STABILITY ........................................................................................................................................ 27 7 TEST SETUP PHOTO ............................................................................................................................................... 29 8 EUT CONSTRUCTIONAL DETAILS ...................................................................................................................... 30 Report No: CCISE191201501 Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912015 No. B-C, 1/F., Building 2, Laodong No.…

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Report No: CCISE191201501 Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912015 No. B-C, 1/F., Building 2, Laodong No.2 Industrial Park, Xixiang Road, Bao’an District, Shenzhen, Guangdong, China Telephone: +86 (0) 755 23118282 Fax: +86 (0) 755 23116366 Page 29 of 35 7 Test Setup Photo Radiated Spurious Emission(Below 1GHz) Radiated Spurious Emission(Above 1GHz)