FCCID.CO- FCC ID Database
HomeCompaniesEquipment ClassesSearch

© 2026 FCC ID Database. All rights reserved.

AboutContactData sourced from FCC public records
  1. Home/
  2. Sokkia Topcon Co., Ltd./
  3. S6MWT11

S6MWT11Bluetooth Module

Sokkia Topcon Co., Ltd.
Bluetooth Module - FCC ID S6MWT11 - Sokkia Topcon Co., Ltd.
Click to zoom

Application Details

Equipment Class
DSS - Part 15 Spread Spectrum Transmitter
Date of Grant
Nov 01, 2007
Application Purpose
Original Equipment
Date of Application
Nov 01, 2007
Equipment Note
Bluetooth Module
Frequency Range
2402.00000000 - 2480.00000000
Company
Sokkia Topcon Co., Ltd.
Country
Japan

Documents & Files

Select a file to view

Users Manual

↗

Cover Letter(s)

↗
↗
↗

External Photos

↗

ID Label/Location Info

↗
↗

Internal Photos

↗

RF Exposure Info

↗

Test Report

↗
↗

Test Setup Photos

↗

Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Users Manual

SURVEYING INSTRUMENTS On-demand Remote Control System SYSTEM MANUAL RC-PR3 Class 1 LED Product Class 1 Laser Product :This is the mark of the Japan Surveying Instruments Manufacturers Association. Class 1 LED Product Class 1 Laser Product SURVEYING INSTRUMENTS On-demand Remote Control System RC-PR3 SYSTEM MANUAL • Thank you for selecting the On-demand Remote Control System. • Before using the instrument, please read this system manual carefully. • The specifications and general appearance of the instrument may be altered at any time and may differ from those appearing in brochures and this manual. • Some of the diagrams shown in this manual may be simplified for easier understanding. • The On-demand Remote Control System adds remote control functions to the Series SRX, NET05/NET1 and Series 230RM. Please read this manual in conjunction with the operator’s manual for your instrument . ii HOW TO READ THIS MANUAL Symbols The following conventions are used in this manual. G: Indicates precautions and important items which should be read before operations. C: Indicates a cross-reference to refer to for additional information. $: Indicates supplementary explanation. &: Indicates an explanation for a particular term or operation. [DIST] etc.: Indicates softkeys on the total station display. {ESC} etc.: Indicates operation keys on the total station. I POWER etc. : Indicates RC controller LEDs. Screens and illustrations • Except where stated, "SRX" means Series SRX, "NET" means NET05 and NET1, "total station" means "Series SRX/NET05/NET1/Series 230RM", and “RC controller” means the control unit for the On-demand Remote Control System in this manual. • The content of this system manual is mainly concerned with explaining the operation of the RC controller. Appended functions for the SET are described in "7. APPENDED SETTINGS FOR THE SERIES 230RM". For precautions and operating method, please read the Series 230RM Operator’s Manual. • Screens and illustrations used in this manual are of SRX (with RC-TS3 handle) or Series 230RM. iii CONTENTS 1. PRECAUTIONS FOR SAFE OPERATION ................ 1 2. PRECAUTIONS .......................................................... 3 3. LASER SAFETY INFORMATION ............................... 6 4. ON-DEMAND REMOTE CONTROL FUNCTIONS .... 7 4.1Turning Operation Flow ..................................................... 8 4.2Measurement Flow .......................................................... 10 5. SYSTEM CONFIGURATION .................................... 13 5.1System Configuration of the SRX/NET ........................... 13 5.2System Configuration of the Series 230RM .................... 14 5.3System Configuration of the RC Controller ..................... 15 5.4Parts of the RC Controller ............................................... 19 6. SETTINGS FOR THE SRX/NET .............................. 22 6.1Settings for Bluetooth Communication ............................ 22 6.2Settings for Auto Pointing and Auto Tracking ................. 24 6.3Performing Turning from the SRX/NET ........................... 26 6.4Turning Error ................................................................... 28 7. APPENDED SETTINGS FOR THE SERIES 230RM 29 7.1Beam Detector ................................................................ 29 7.2Attaching/Removing the Handle ...................................... 29 7.3Setup for Search Before Distance Measurement ............ 30 7.4Communication Setup ..................................................... 30 7.5Performing Turning from the Series 230RM SFT Mode .. 31 7.6Allocating Softkey Functions ........................................... 32 7.7Error Messages ............................................................... 33 7.8Turning Error ................................................................... 33 8. BASIC OPERATION ................................................. 34 8.1Using the Battery ............................................................. 34 8.2Button Operations ........................................................... 35 8.3Communication Status .................................................... 37 9. RC CONTROLLER SETTINGS ................................ 38 9.1Setting Auto Power-off .................................................... 38 9.2Setting Communication Mode ......................................... 38 9.3Communication Setup for the RC Controller ................... 39 9.4Calibrating the Electronic Compass ................................ 39 10. ERROR INDICATIONS ........................................... 43 iv CONTENTS 11. TROUBLESHOOTING ............................................. 44 12.STANDARD EQUIPMENT AND OPTIONAL ACCESSORIES46 12.1 Standard Equipment ....................................................... 46 12.2 Optional Accessories ...................................................... 46 12.3 Power Supply System ..................................................... 48 13. SPECIFICATIONS .................................................... 49 14. EXPLANATION ........................................................ 53 14.1 High Accuracy with the 360° Prism .................................. 53 15. REGULATIONS ........................................................ 54 1 1. PRECAUTIONS FOR SAFE OPERATION For the safe use of the product and prevention of injury to operators and other persons as well as prevention of property damage, items which should be observed are indicated by an exclamation point within a triangle used with WARNING and CAUTION statements in this system manual. The definitions of the indications are listed below. Be sure you understand them before reading the main text. Definition of Indication General C WARNING Ignoring this indication and making an operation error could possibly result in death or serious injury to the operator. C CAUTION Ignoring this indication and making an operation error could possibly result in personal injury or property damage. J This …

Text truncated - open the document above for the full version.

External Photos

External Photo FCC ID: S6MWT11 IC: 5790A-WT11 Top View Bottom View Bluetooth Module with Antenna

ID Label/Location Info

1/1 4/1 30 18

ID Label/Location Info

18mm 30mm Bluetoothモジュール ラベル 位置図

Internal Photos

Internal Photo FCC ID: S6MWT11 IC: 5790A-WT11 Bluetooth Module without Shield Cover

RF Exposure Info

UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 Applicant: SOKKIA CO., LTD. Type of Equipment : WT11 Bluetooth Module Model No. : WT11 FCC ID: S6MWT11 IC Number:5790A-WT11 SOKKIA CO., LTD. declares that Model : WT11 complies with FCC radiation exposure requirement specified in the FCC Rules 2.1093(for portable)/2.1091 (for mob i The “WT11“ has 14.13 mW of conducted Peak Output power and 23.12 mW of EIRP. This kind of equipment is below 60/frequency[GHz] mW(TCB Exclusion List) so that SAR testing is excluded. The Following calculation is the reference data for 20cm distance. RF Exposure Calculations: The following information provides the minimum separation distance for the highest gain antenna provided with the “WT11“ as calculate d from FCC OET Bulletin 65 Appendix A, Table (B) Limits for General Population / Uncontrolled Exposure. This calculation is based on the highest EIRP possible from the system, considering maximum power and antenna gain, and considering a 1.0mW/cm^2 uncontrolled exposure limit. The Friis formula used was: S = (P * G) / (4* π * r 2 ) Where P = 14.13 mW (Maximum peak output power) G = 1.64 Numerical Antenna gain; equal 2.14 dBi r =20.0 cm For: WT11S = 0.00460mW/cm 2 No. : 27GE0320-HO RF Exposure / SAR Statement

Test Report

Test report No. : 27GE0320-HO-A Page : 2 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 CONTENTS PAGE SECTION 1: Client information ............................................................................................................ 3 SECTION 2: Equipment under test (E.U.T.)........................................................................................ 3 SECTION 3: Test specification, procedures & results......................................................................... 4 SECTION 4: Operation of E.U.T. during testing .................................................................................8 SECTION 5: Spurious Emission.......................................................................................................... 11 SECTION 6: Bandwidth ....................................................................................................................... 12 SECTION 7: Maximum Peak Output Power ..................................................................................... 12 SECTION 8: Carrier Frequency Separation ...................................................................................... 12 SECTION 9: Number of Hopping Frequency .................................................................................... 12 SECTION 10: Dwell time...................................................................................................................... 12 APPENDIX 1: Photographs of test setup ............................................................................................ 13 Spurious Emission (Radiated) ........................................................................................13 Worst Case Position (Horizontal: X-axis/ Vertical:Y-axis) .........................................15 APPENDIX 2: Data of EMI test............................................................................................................ 17 Carrier Frequency Separation .......................................................................................17 20dB Bandwidth...............................................................................................................20 Number of Hopping Frequency......................................................................................23 Dwell time .........................................................................................................................26 Maximum Peak Output Power.......................................................................................31 Radiated Spurious Emission (below 1GHz) ..................................................................32 Radiated Spurious Emission (above 1GHz) ..................................................................46 Conducted Spurious Emission(BDR).............................................................................64 Conducted Spurious Emission(EDR).............................................................................67 99% Occupied Bandwidth(BDR) ...................................................................................73 99% Occupied Bandwidth(EDR) ...................................................................................74 APPENDIX 3:Test instruments ............................................................................................................ 75 Test report No. : 27GE0320-HO-A Page : 3 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 SECTION 1: Client information Company Name : SOKKIA CO., LTD. Address : 260-63, NAGAYA, ATSUGI-SI, KANAGAWA, 243-0036, JAPAN Telephone Number : +81-46-248-0068 Facsimile Number : +81-46-247-6866 Contact Person : HITOSHI KOYAMA SECTION 2: Equipment under test (E.U.T.) 2.1 Identification of E.U.T. Type of Equipment : WT11 Bluetooth Module Model No. : WT11 Serial No. : ES0001 Rating : DC3.3V Country of Manufacture : JAPAN Receipt Date of Sample : September 3, 2007 Condition of EUT : Engineering prototype (Not for Sale: This sample is equivalent to mass-produced items.) Modification of EUT : No modification by the test lab. 2.2 Product Description Model No: WT11 (referred to as the EUT in this report) is the WT11 Bluetooth Module. Clock frequency(ies) in the system : 48MHz Equipment Type : Transceiver Frequency of Operation : 2402-2480MHz Bandwidth & Channel Spacing : 1MHz &1MHz Modulation : FHSS (GFSK, π/4 - DQPSK, 8DPSK) Power Supply : DC 3.3V ANT.1 ANT.2 Antenna Type lambda / 4 Dipole antenna lambda / 2 Sleeve antenna Model number FLANT-004STD 1029-C17586 Connector Type SMA MALE U.FL Antenna Gain 2.00dBi 2.14dBi Test report No. : 27GE0320-HO-A Page : 4 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 SECTION 3: Test specification, procedures & results 3.1 Test Specification Test Specification : FCC Part15 Subpart C: 2007 Title : FCC 47CFR Part15 Radio Frequency Device Subpart C Intentional Radiators Section 15.207 Conducted limits Section 15.247 Operation within the bands 902-928MHz, 2400-2483.5MHz, and 5725-5850MHz FCC 15.31 (e) The EUT has its own power supply regulation, which is integrated in chip Blue Core 4. Therefore, this EUT complies with the requirement. FCC Part 15.203 Antenna requirement It is impossible for end users to replace the antenna, because the antenna is mounted inside of the host device in which the EUT is installed, and only professional can access it. Therefore, the equipment complies with the antenna requirement of Section 15.203. Test report No. : 27GE0320-HO-A Page : 5 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Of…

Text truncated - open the document above for the full version.

Test Report

Test report No. : 27GE0320-HO-A Page : 17 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 APPENDIX 2: Data of EMI test Carrier Frequency Separation UL Japan, Inc. Head Office EMC Lab. No.6 measurement Room COMPANY : SOKKIA CO., LTD.REGULATION : FCC15.247(a)(1)/RSS-210A8.1(b) EQUIPMENT : WT11 Bluetooth ModuleTEST DISTANCE : - MODEL : WT11DATE : 09/27/2007 S/ N : ES0001TEMPERATURE : 25 deg.C POWER : DC3.3VHUMIDITY : 55 % MODE : BT Tx(Hopping on)/InquiryENGINEER : Takahiro Hatakeda [DH5] ChFreq. [MHz][MHz] Low2402.0>0.620[MHz] (two-thirds of 20dB Bandwidth(0.930[MHz])) or 25[kHz](whichever is greater) Mid2441.0 High2480.0 Inquiry2441.0 [3DH5] ChFreq. [MHz][MHz] Low2402.0>0.834[MHz] (two-thirds of 20dB Bandwidth(1.250[MHz])) or 25[kHz](whichever is greater) Mid2441.0 High2480.0 1.000 1.000>0.834[MHz] (two-thirds of 20dB Bandwidth(1.250[MHz])) or 25[kHz](whichever is greater) 1.000>0.834[MHz] (two-thirds of 20dB Bandwidth(1.250[MHz])) or 25[kHz](whichever is greater) Channel separationLimit 1.000 1.000 1.000>0.624[MHz] (two-thirds of 20dB Bandwidth(0.935[MHz])) or 25[kHz](whichever is greater) >0.627[MHz] (two-thirds of 20dB Bandwidth(0.940[MHz])) or 25[kHz](whichever is greater) 2.000>0.514[MHz] (two-thirds of 20dB Bandwidth(0.771[MHz])) or 25[kHz](whichever is greater) Channel separationLimit Test report No. : 27GE0320-HO-A Page : 18 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 Carrier Frequency Separation [BDR] Ch:Low Ch:Mid Ch:High Inquiry Test report No. : 27GE0320-HO-A Page : 19 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 Carrier Frequency Separation [EDR] Ch:Low Ch:Mid Ch:High Test report No. : 27GE0320-HO-A Page : 20 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 20dB Bandwidth UL Japan, Inc. Head Office EMC Lab. No.6 measurement Room COMPANY : SOKKIA CO., LTD.REGULATION : FCC15.247(a)(1)/RSS-210A8.1(a) EQUIPMENT : WT11 Bluetooth ModuleTEST DISTANCE : - MODEL : WT11DATE : 09/27/2007 S/ N : ES0001TEMPERATURE : 25 deg.C POWER : DC3.3V HUMIDITY : 55 % MODE : BT Tx(Hopping off)/InquiryENGINEER : Takahiro Hatakeda [DH5] ChFreq.Limit [MHz][MHz] Low2402.0- Mid2441.0- High2480.0- Inquiry2441.0- [3DH5] ChFreq.Limit [MHz][MHz] Low2402.0- Mid2441.0- High2480.0- 1.250 1.250 20dB Bandwidth [MHz] 1.250 0.771 0.940 [MHz] 0.930 0.935 20dB Bandwidth Test report No. : 27GE0320-HO-A Page : 21 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 20dB Bandwidth [BDR] Ch:Low Ch:Mid Ch:High Inquiry Test report No. : 27GE0320-HO-A Page : 22 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 20dB Bandwidth [EDR] Ch:Low Ch:Mid Ch:High Test report No. : 27GE0320-HO-A Page : 23 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 Number of Hopping Frequency UL Japan, Inc. Head Office EMC Lab. No.6 measurement Room COMPANY : SOKKIA CO., LTD.REGULATION : FCC15.247(a)(1)(iii)/RSS-210A8.1(d) EQUIPMENT : WT11 Bluetooth ModuleTEST DISTANCE : - MODEL : WT11DATE : 09/27/2007 S/ N : ES0001TEMPERATURE : 25 deg.C POWER : DC3.3V HUMIDITY : 55 % MODE : BT Tx(Hopping on)/InquiryENGINEER : Takahiro Hatakeda [DH5][3DH5] ModeLimitModeLimit [time][time] Tx(Hopping on) ≧ 15Tx(Hopping on) ≧ 15 [Inquiry] ModeLimit [time] Inquiry ≧ 15 [number] 79 Number of channelNumber of channe l [number] 79 [number] 32 Number of channel Test report No. : 27GE0320-HO-A Page : 24 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 Number of Hopping Frequency [BDR] Hopping on (1/3) Hopping on (2/3) Hopping on (3/3) Inquiry (1/3) Inquiry (2/3) Inquiry (3/3) Test report No. : 27GE0320-HO-A Page : 25 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 Number of Hopping Frequency [EDR] Hopping on (1/3) Hopping on (2/3) Hopping on (3/3) Test report No. : 27GE0320-HO-A Page : 26 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 Dwell time UL Japan, Inc. Head Office EMC Lab. No.6 measurement Room COMPANY : SOKKIA CO., LTD.REGULATION : FCC15.247(a)(1)(iii)/RSS-210A8.1(d) EQUIPMENT : WT11 Bluetooth ModuleTEST DISTANCE : - MODEL : WT11DATE : 09/27/2007 S/ N : ES0001TEMPERATURE : 25 deg.C POWER : DC3.3V HUMIDITY : 55 % MODE : BT Tx(Hopping on)/InquiryENGINEER : Takahiro Hatakeda [BDR] ModeLength ofResultLimit transmission time [msec][msec] [msec] DH151 times / 5 sec. x31.6 sec. = 323 times 0.490158400 DH326 times / 5 sec. x31.6 sec. = 165 times 1.750289400 DH517 times / 5 sec. x31.6 sec. = 108 times 3.008325400 [Inquiry] ModeLength ofResultLimit transmission time [msec][msec] [msec] Inquiry100 times / 1 sec. x12.8 sec. = 1280 times 0.187240400 [EDR] ModeLength ofResultLimit transmission time [msec][msec] [msec] 3DH…

Text truncated - open the document above for the full version.

Test Setup Photos

Test report No. : 27GE0320-HO-A Page : 13 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 APPENDIX 1: Photographs of test setup Spurious Emission (Radiated) (ANT.1) Front Rear Test report No. : 27GE0320-HO-A Page : 14 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 Spurious Emission (Radiated) (ANT.2) Front Rear Test report No. : 27GE0320-HO-A Page : 15 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 Worst Case Position (Horizontal: X-axis/ Vertical:Y-axis) (ANT.1) X-axis Y-axis Z-axis Test report No. : 27GE0320-HO-A Page : 16 of 76 Issued date : October15, 2007 FCC ID : S6MWT11 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN Telephone : +81 596 24 8116 Facsimile : +81 596 24 8124 Worst Case Position (Horizontal: X-axis/ Vertical:Y-axis) (ANT.2) X-axis Y-axis Z-axis

Contact Information

Applicant

Keiji Tomita(General Manager)
[email protected]+81-3-3558-2623Fax: +81-3-3966-2963

Technical Contact

UL Japan, Inc.Tetsuo Maeno
[email protected]

4383-326 Asama-cho · Ise-shi, Mie-ken · Japan

Test Firm

UL Japan, Inc. Yokowa EMC Lab.Masamichi Ishii
[email protected]+81-596-24-8750Fax: +81-596-39-0232

Technical Specifications

#Rule PartsFrequency RangePower Output
115C2.40 GHz - 2.48 GHz14.20 mW
Modular Type
Single Modular Approval
Confidentiality
Long Term
Grant Notes
Modular approval limited for hosts of Sokkia Co., Ltd, professional installation. The antennas used for this transmitter as shown in this filing must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users may not be provided with the module installation instructions.

Other Applications from Sokkia Topcon Co., Ltd.

Bluetooth module - FCC ID S6MSMBT1 - Sokkia Topcon Co., Ltd.
S6MSMBT1

Bluetooth module

Sep 25, 2006

Equipment Class

DSS - Part 15 Spread Spectrum Transmitter
Zeal Z1 - FCC ID S6MZ1 - Sokkia Topcon Co., Ltd.
S6MZ1

Zeal Z1

Nov 14, 2005

Equipment Class

DSS - Part 15 Spread Spectrum Transmitter