XYH-RDR2750UDigital Radio Base Station

1 Copyright © 2021 RCA Communications Systems www.RCACommunicationsSystems.com Communications Systems INSTRUCTION MANUAL RDR2750 Digital Base Station Radio CONTENTS: Product Inspection..........2 RCA RDR2750 Overview..........2 Connecting the Base Station to Power Outlet..........3 Attaching / Removing the Antenna..........3 Turn On/Off the Base Station..........3 Adjusting the Volume..........3 Programming Buttons..........3 Push-To-Talk..........3 Operational Status Indicators..........4 Display Icons..........4 LED Indicator..........4 Audio Tones..........4 Selecting a Zone..........4 Selecting a Channel, Subscriber ID or Group ID..........4 Receiving and Responding to a Group Call..........4 Receiving and responding to an Individual Call..........5 Receiving and All Call..........5 Making a Radio Call..........5 Making a Group Call..........5 Making a Private Call..........5 Making an All Call..........5 Making Group / Private Call with One Touch Access Button..........5 Emergency Operation..........5 Initiating & Responding to Emergency Alarm..........6 Exiting Emergency Mode..........6 Advanced Features..........6 Radio Check..........6 Sending a Radio Check..........6 Remote Monitor..........6 Initiating Remote Monitor..........6 Contacts Setting..........6 Making a Group Call from Contacts..........6 Making an Individual Call from Contacts..........7 Call Log Feature Accessing the Call Log..........7 Storing an Alias or ID from the Missed Call List..........7 Deleting a Call from a Call List..........7 Call Alert Operation..........7 Receiving and Responding to a Call Alert..........7 Making a Call Alert from the Contact List..........7 Sending a Quick Text Message..........7 Managing Fail-to-Send Text Message..........8 Resend Text Message..........8 Forwarding a Text Message..........8 Editing a Text Message..........8 Managing Sent Text Message..........8 Viewing Sent Text Messages..........8 Deleting All Sent Text Messages from the Sent Items..........8 Receiving a Text Message..........8 Reading a Text Message..........9 Managing Received Text Message..........9 Viewing a Text Message from the Inbox..........9 Replying to a Text Message from the Inbox..........9 Deleting a Text Message from the Inbox..........9 Encryption..........9 Dual Tone Multi Frequency (DTMF)..........9 Radio Enable/Disable..........10 Radio Enable..........10 Scan Viewing an Entry in the Scan List..........10 Scan Instructions and Methods..........10 Starting and Stopping Scan..........10 Responding to a Scan..........10 Deleting a Nuisance Channel..........11 Restoring a Nuisance Channel..........11 Utilities Turning Keypad Tones On or Off..........11 Setting the Squelch Level..........11 Setting the Power Level..........11 Controlling the Display Backlight..........11 Talkaround..........12 Turning the Radio Tones/Alert On or Off..........12 Turning the LED On or Off..........12 Turning the Introduction Screen On/Off..........12 Accessing General Radio Information..........12 Checking the Radio ID..........12 Checking the Firmware Version..........12 Checking the CPS Version..........12 Care and Cleaning..........13 Troubleshooting..........13 CONTENTS: (continued) Congratulations and Thank You for selecting the PRODIGI RDR2750 Digital Radio Base Station from RCA Communications Systems -The most trusted name in radio! Our newest digital professional communications products based on DMR technology establishes a benchmark in premium digital two- way radio equipment, made to perform flawlessly under the most demanding commercial conditions. Cutting edge design, high-end professional grade materials and components, simple operation and superior assembly quality: RCA Communications Systems has it all, including our exclusive no-nonsense, two-year “Warranty Protection Program,” one of the most comprehensive warranties in the communications industry. To ensure you achieve maximum performance from your RDR2750 digital radio base station, please be sure to carefully read this manual. MODELS COVERED IN THIS MANUAL: •RDR2750V VHF Digital Radio Base Station •RDR2750U UHF Digital Radio Base Station 2 Copyright © 2021 RCA Communications Systems www.RCACommunicationsSystems.com Communications Systems INSTRUCTION MANUAL RDR2750 Digital Base Station Radio PRODUCT INSPECTION Prior to unpacking the RDR2750 digital base station radio, please inspect the packaging for signs of damage and report any damage or missing components immediately to your RCA Communications System Sales and Service Center. Every RDR2750 digital base station should come with the following items: ItemQty. RDR2750 -Base Station Radio1 ANB2750U - Antenna for UHF Models ANB2750V - Antenna for VHF Models 1 MB2750KIT - Mounting Bracket Screw Kit1 MB2750KIT Mounting Bracket Screw KitPower Supply MENU P1 PTPTTT CH+VOL+ CH-VOL- P2 OK BACK RDR2750 Base Station Radio ANB2750V/U Antenna RCA RDR2750 Base Station Overview 1LCD Display7Push-To-Talk Button13 External Microphone Jack 2LED Indicators8Internal Speaker14Power On / Off Switch 3Menu Button9 P1 / P2 Buttons (Programmable) 15 Power Supply Connector 4Ok Button10 Channel Up / Down Buttons 16Antenna Connector 5Back Button11 Volume Up / Down Buttons 6Internal Microphone12 Programming Cable Port Note: The frequency band of your RDR2750 is marked on the radio label. If it is not visible, identify the frequency band according to the color code ring on the antenna: red indicates UHF 400- 430 Mhz, orange indicates UHF 440-470 Mhz, purple indicates VHF 136-174 Mhz. MENU P1 PTPTTT CH+VOL+ CH-VOL- P2 OK BACK 34567 9 8 10 11 1 2 1213 141516 3 Copyright © 2021 RCA Communications Systems www.RCACommunicationsSystems.com Communications Systems INSTRUCTION MANUAL RDR2750 Digital Base Station Radio Connecting the Base Station to Power Outlet 1. Plug the adapter’s AC connector into the AC outlet socket. (see image A) 2. Plug the adapter’s DC connector into the DC socket on the back of the base station. (see image B) Atta…

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RCA Communications Systems Address: 133 W. Market St. Suite 227 Indianapolis Indiana United States, 46204 Tel: 8778222915 Fax: 3175363718 Email: [email protected] FCC Confidential Authorization Date: 2021-06-23 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: XYH-RDR2750U In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, RCA Communications Systems hereby requests long-term confidential treatment of information accompanying this application as outlined below:  Block Diagram  Schematics  Operation Description  Parts List/Tune up procedure (for licensed devices) The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature: Ben Burns CEO

RCA Communications Systems Address: 133 W. Market St. Suite 227 Indianapolis Indiana United States, 46204 Tel: 8778222915 Fax: 3175363718 Email: [email protected] Date: 2021-06-23 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Extended Frequencies Justification for Certification of Transmitter with FCC ID: XYH-RDR2750U Dear Sir/Madam, This transmitter was designed to operate in following frequency ranges: 400-470MHz To aid equipment authorization in other countries which accept the United States FCC Grant for Certification, RCA Communications Systems is requesting that the FCC lists the frequencies 400-470MHz, under FCC Rule Part 90 on the FCC Grant. RCA Communications Systems attests that the Digital Radio Base Station will not be marketed to USA users with the frequency band which is not allowed by the rule Part 90. Per the FCC’s KDB634817 guidance, as an alternative to listing the exact frequencies, we acknowledge that it’s a violation of the FCC Rules if this device operates on unauthorized frequencies. Frequency Range(MHz) FCC Rule Part 406.1-450 FCC Part 90 450-454 FCC Part 90 456-460 FCC Part 90 460-462.5375 FCC Part 90 462.7375-467.5375 FCC Part 90 467.7375-470 FCC Part 90 Also, equipment programming is the responsibility of Authorized Service Personnel, the Digital Radio Base Station complies with 47 CFR Part 90.203(e), in that the operator cannot directly program the transmit frequencies using the normally accessible external controls. Please contact me if you require any additional information. Sincerely Yours, Signature: Printed Name: Ben Burns Title: CEO

RCA Communications Systems Address: 133 W. Market St. Suite 227 Indianapolis Indiana United States, 46204 Tel: 8778222915 Fax: 3175363718 Email: [email protected] Date: 2021-06-23 To: FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Attestation statement regarding the Digital Portable Radio spectrum efficiency TYPE OF EQUIPMENT: Digital Radio Base Station Model number: RDR2750U FCC ID: XYH-RDR2750U Dear Sir or Madam We, RCA Communications Systems. declare that the time division multiple access (TDMA) technology provides two paths in a 12.5 kHz channel bandwidth, thus meeting the one voice path per 6.25 kHz of spectrum requirement. This radio also provides data rate of 9600 bps in a 12.5 kHz channel, thus meeting the minimum data rate of 4800 bps in a 6.25 kHz channel. Please contact the undersigned if you have any questions or need any further information. Sincerely, Signature Ben Burns CEO

EXHIBIT A - EUT EXTERNAL PHOTOGRAPHS Audio Port Antenna Adapter

Label Location

EXHIBIT B - EUT INTERNAL PHOTOGRAPHS MCU RF Chip

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: SZ1210531-20419E-00A Page 9 of 30 1- MAXIMUM PERMISSIBLE EXPOSURE (MPE) Applicable Standard According to 1.1307 (b)(1), 2.1091 systems operating under the provisions of this section shall be operated in a manner that ensures the public is not exposed to RF energy level in excess of the communication guidelines. Limits for Maximum Permissible Exposure (MPE) Limits for Occupational/Controlled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) (i) Limits for Occupational/Controlled Exposure 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 f = frequency in MHz; * = Plane-wave equivalent power density; Calculation Formula Prediction of power density at the distance of the applicable MPE limit: S = PG/4πR 2 Where: S = power density (in appropriate units, e.g. mW/cm 2 ); P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); Results Frequency (MHz) Maximum Output Power including Tune-up Tolerance (dBm) Antenna Gain (dBi) Operation Duty Cycle (%) Evaluation Distance (cm) Power Density (mW/cm 2 ) Power Density Limit (mW/cm 2 ) 400-470 37 1.8 50 20 0.756 1.33 Result: The device meet FCC MPE at 20 cm distance Conclusion: Compliance

FCC PART 90 TEST REPORT For RCA Communications Systems 133 W. Market St. Suite 227 Indianapolis Indiana United States, 46204 FCC ID: XYH-RDR2750U Report Type: Original Report Product Type: Digital Radio Base Station Re port Number: SZ1210531-20419E-00A Re port Date: 2021-06-23 Reviewed B y: Gavin Xu RF Engineer Prepared By: Bay Area Compliance Laboratories Corp. (Dongguan) No.12, Pulong East 1 st Road, Tangxia Town, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: SZ1210531-20419E-00A Page 2 of 30 TABLE OF CONTENTS GENERAL INFORMATION ...................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) .................................................................................... 4 TECHNICAL SPECIFICATION ......................................................................................................................................... 4 OBJECTIVE .................................................................................................................................................................. 4 RELATED SUBMITTAL(S)/GRANT(S) ............................................................................................................................ 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY ................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................ 5 DECLARATIONS ........................................................................................................................................................... 5 SYSTEM TEST CONFIGURATION ......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 EUT EXERCISE SOFTWARE ......................................................................................................................................... 6 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 6 SUPPORT CABLE LIST AND DETAILS ............................................................................................................................ 6 BLOCK DIAGRAM OF TEST SETUP ............................................................................................................................... 6 TEST EQUIPMENT LIST ................................................................................................................................................ 7 ENVIRONMENTAL CONDITIONS ................................................................................................................................... 7 SUMMARY OF TEST RESULTS .............................................................................................................................. 8 1- MAXIMUM PERMISSIBLE EXPOSURE (MPE) ............................................................................................... 9 APPLICABLE STANDARD .............................................................................................................................................. 9 CALCULATION FORMULA ............................................................................................................................................ 9 RESULTS ...................................................................................................................................................................... 9 2 - RF OUTPUT POWER .......................................................................................................................................... 10 APPLICABLE STANDARD ............................................................................................................................................ 10 TEST PROCEDURE ...................................................................................................................................................... 10 TEST DATA ................................................................................................................................................................ 10 3 - MODULATION CHARACTERISTIC ............................................................................................................... 13 APPLICABLE STANDARD ............................................................................................................................................ 13 TEST PROCEDURE ...................................................................................................................................................... 13 TEST DATA ................................................................................................................................................................ 13 4 – OCCUPIED BANDWIDTH & EMISSION MASK ........................................................................................... 16 APPLICABLE STANDARD ............................................................................................................................................ 16 TEST PROCEDURE ...............................................................…

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