P8D-C6288IDual Band PCS/GSM Flip-Phone

introducing C6 series User Menu 2 Getting to know your new phone ongratulations on the purchase of your new Mobicom phone! Your Mobicom phone is an advanced communications device with many features and functions. Please take a moment to familiarize yourself with the capabilities and options of your Mobicom phone. Your familiarity with the operation of your Mobicom phone will help you enjoy it in a safe and productive manner 3 Display Icons Audio Settings Battery level and charge Call Divert Activated Divert Incoming call and on-call indicator Keypad locked Memo or alarm set Messages Phone book Phone number saved in phone Phone number saved in SIM card Secretary Settings Signal strength indicator 4 5 S a f e u s e o f y o u r n e w p h o n e Safe use of your new phone Please observe the following guildlines for safe and respon- sible opperation of your cellular phone Follow all guidelines for safe and legal use of your phone. See detailed information in this manual. Use caution while placing or receiving calls while driving. You should try to find a safe place to pull over and stop driving before placing or receiving a phone call while driving. The use of a hands free headset is required for cell phone use while driving in some areas. Keep your phone switched off near blasting areas where explosives are being detonated. Always observe local rules and regulations that may restrict or prohibit phone use in some areas. When in hospitals or near medical equip- ment local rules and regulations may require that your phone be switched off. FCC regulations require that your phone be switched off while on airplanes. Wireless phones could cause interference with the airplanes equip- ment or air traffic control signals. Keep your phone switched off while refueling. Do not use your phone while near fuel or flammable chemicals. Avoid contact with your phones antenna while the phone is in use. All wireless phones, including this one may receive interference from other sources, which may affect the phones performance. 6 S a f e u s e o f y o u r n e w p h o n e Table of contents Getting to know your new phone 2 Display Icons 3 Safe use of your new phone 5 Table of contents 6 Key Featuresof the Mobicom C6088 & C6288 Phone 11 Getting Started 13 UnPacking 14 Contents 14 Your new phone’s box should con- tain the following items: 14 Installing your SIM Card 14 Charging your phone’s battery 15 Connecting a hands free headset adapter to your phone 16 Using your Phone 17 Turn phone on 17 Welcome Screen 17 Menu: 17 Navigation Keys: 17 Menu Tree 19 Messaging Management- Stay Con- nected with Mobicom 19 Phone Book Management 20 Audio Settings 21 Diverting your Calls 22 7 S a f e u s e o f y o u r n e w p h o n e Settings 23 Secretary 25 Making and Recieving Phone Calls 27 Dial By Number 27 Dial By Name 27 Receive Calls 28 Flip Open Answer: 28 Any Key Answer 28 Audio Settings 29 Audio Settings 29 Setting volume 29 Setting Speach Volume 29 Setting Ringer Volume 29 Setting Tone Volume 30 Settinging a Ringer Type 30 Setting Tone Types 31 Setting Key Tones 31 Setting Info Tones: 31 Setting the SMS Rx. Tone 31 Setting the Serve Tone: 31 Setting One Min Beep Tone 32 View Missed, Received and Placed Calls 33 Viewing Missed Calls 33 Viewing Missed Call details: 33 Copying Missed calls to Phone Book: 34 Editing Missed Calls: 34 34 Deleting Missed Calls: 34 There are several ways to delete the details regarding a Missed call from your phone’s memory: 34 Viewing Received Calls 35 Viewing Received Call details: 35 Copying Received calls to Phone 8 S a f e u s e o f y o u r n e w p h o n e Book: 35 Editing Received Calls: 35 Deleting Received Calls: 36 Viewing Placed Calls 36 Viewing Placed Call details: 36 Copying Placed calls to Phone Book: 37 Editing Placed Calls: 37 Deleting PlacedCalls: 37 Voice Mail 39 Managing Voice Mail: 39 Short Messaging Service ( SMS ) 41 Reading Messages: 41 Reading messages in your INBOX 41 Reading Messages in your Outbox 42 Composing Messages 42 Deleting Messages 43 Delete ALL messages 44 Deleting Messages in your Outbox: 44 Delete a particular Message 44 Delete ALL messages 45 Checking available message memo- ry space 45 Message Set-Up 45 Message Display: 45 Message: 45 Message deliverability 46 Message Status 46 Broadcast: 46 Phone Book 47 Searching by name: 47 Creating an entry in the phone book: 9 S a f e u s e o f y o u r n e w p h o n e 47 Deleting an entry in the phone book: 48 Copying a Phone book entry from the SIM card to the phone: 48 Viewing SIM card and Phone phone books: 48 Checking available phone book memory space: 48 Entering your phone's number into phone book: 49 One-Touch Dialing: 49 Changing Phone Settings 51 Call Settings 51 Flip Open Answer: 51 1 Touch Dial 51 Auto Redial 52 Any Key Answer 52 Call waiting: 52 Clock Setup 53 To Set The Time 53 Seting The Date 53 Setting Time Format 53 Setting Time Zone: 53 Setting Daylight Savings: 53 Screen Setting 54 Setting the Backlight 54 Setting the Contrast 54 Language Settings 55 Setting the Language: 55 Setting the Greeting on your phone 55 Setting the default phone 55 Setting the Security features on your phone: 55 Setting the Network details on your phone: 55 10 S a f e u s e o f y o u r n e w p h o n e Secretary Mode 57 Entering A Memo 57 Setting an Alarm 57 Setting Area Code Search 58 Using the Calculator Utility 58 Using the Global Time Clock 58 Diverting Messages 59 Diverting all calls: 59 Diverting calls when phone is in use: 60 Diverting calls when there is no re- ply: 60 Diverting calls when phone is off: 60 Status of diverting calls: 61 Cancel diverting calls: 61 Troubleshooting 63 Care and maintenance of your new phone 65 Batteries care and maintenance 67 Warranty 69 11 K e y F e a t u r e s o f t h e M o b i c o m C 6 0 8 8 & Key Featuresof the Mobicom C6088 & C6288 Phone Your feature-packed MobiCom phone is the world's small- est, lightest cellular phone. Size L x W x H (mm) C6088 68 x 38 x 20 C6288 68 x 38 x 24 WeightC6…

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FCC Notice And SAR Statement For C6088i and C6288i FCC Notice And SAR Statement This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference.NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 ofthe FCC rules. These limits are designed to provide reasonableprotection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not used in accordance with the instructions, may cause harmful interference to radiocommunications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the unit off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna.-Increase the separation between the equipment and the receiver.-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help.Any changes or modifications not expressly approved by Mobicom Corporation will void the user's authority to operate this equipment. Only use approved batteries and chargers. Specific Absorption Rate (SAR) is a value that corresponds to the relative amount of RF energy absorbed by the user of a wireless phone. The Federal Communications Commission of the U.S. Government sets SAR limits. The maximum allowed SAR value of 1.6W/kg allows for a substantial safety margin, designed to assure the safety of all persons. Tests for SAR values are conducted using FCC approved operating positions at the highest possible power levels. The actual SAR level while using the phone is likely to be well below the maximum value. The highest reported SAR levels for this mobile phone are in full compliance with the FCC limits. SAR compliance is limited to the specific belt-clip/holsters/accessories shipped with this product. SAR compliance is limited to the batteries shipped with this product.

May 7, 2002 Attn: TCB Services, Reviewing Engineer MET Laboratories, INC RE: CONFIDENTIALITY REQUEST FOR THE C6288i FCC ID: P8D-C6288I To Whom It May Concern: This letter serves as an official request for confidentiality under FCC Rule Section 0.459. Mobicom Corporation requests that the schematic diagrams, layouts, block diagrams, functional descriptions, parts lists, and calibration procedures required to be submitted with this application are withheld from public review. These documents are company proprietary information that should not get into the possession of competitors. Release of these items to the general public, and thus our competition, would be detrimental to our competitive edge. Please contact me if there is any information you may need. Sincerely, Joe Murphy Senior Testing Engineer Mobicom Corporation

FCC ID: P8D-C6288I FCC ID: P8D-C6288I

FCC ID: P8D-C6288I FCC ID: P8D-C6288I

Mobicom Corporation 960 Holmdel Road Holmdel, NJ 07733 Phone (732) 772-2200 May 6, 2002 Mr. Chris Harvey TCB Services MET Laboratories, Inc. 914 W Patapsco Avenue Baltimore, MD 21230 RE: FCC ID P8D-C6288I, request for additional information Dear Mr. Harvey, I am supplying additional information requested by the FCC for the Mobicom C6288i mobile telephone. This letter addresses the request for: “ Additional photographs. Please take external side photos. Please provide internal photos of the chassis and any other missing parts.” This is item number 3 under the EMC section of Correspondence Reference Number 4090. Please let me know immediately, if the attached data does not satisfy the request. Best Regards, Joe Murphy Senior Test Engineer [email protected] phone: 732-772-2215 fax: 732-834-9806 FCC ID: P8D-C6288I FCC ID: P8D-C6288I FCC ID: P8D-C6288I

2. Testobject Data Type Designation: Kind of Device: (optional) Voltage Type: Voltage level: Equipment under Test: C6288i GSM 900 / PCS 1900 Dual Band Mobile Phone DC 3,6 V Ports 2.1 General EUT Description General product description: The Equipment Under Test (EUT) is an E-GSM 900 / PCS 1900 dual band mobile phone. In the PCS1900 mode the C6288i operates in blocks A through F from 1850,2 MHz (lowest channel = 512) to 1909,8 MHz (highest channel = 810). The EUT provides the following ports: headset connector bottom connector Antenna connector Enclosure The main components of EUT are listed and described in Chapter 3.2 Page 6 of 31Testreport Reference: 4_Mobi_0201_GSM_FCCa Short Description Equipment under Test Type Designation 2.2 EUT Main components: Type, S/N, Short Descriptions etc. used in this Test Report HW StatusSW StatusSerial No.Date of Receipt 5.01.0-01.02.02 C6288iDual Band Mobile Phone EUT A (7Layers EUT code 59010x01) 5.01.0-01.02.02 C6288iDual Band Mobile Phone EUT B (7Layers EUT code 59010y02) EUT B is equipped with an antenna connector for the conducted measurements. NOTE: The short description is used to simplify the identification of the EUT in this test report 2.3 Ancillary Equipmen Short Description Equipment under TestType DesignationHW StatusSW StatusSerial No.FCC Id For the purposes of this test report, ancillary equipment is defined as equipment which is used in conjunction with the EUT to provide operational and control features to the EUT. It is necessary to configure the system in a typical fashion, as a customer would normally use it. But never the less Ancillary Equipment can influence the test results. ------- Setup No.Combination of EUTsDescription 2.4 EUT Setups This chapter describes the combination of EUT's and ancillary equipment used for testing. setup 1EUT Aused for radiated measurements setup 2EUT Bused for conducted measurements Op. Mode Description of Operating Modes Remarks 2.5 Operating Modes This chapter describes the operating modes of the EUT's used for testing. op-mode 1Call established on Traffic Channel (TCH) 512, Carrier Frequency 1850,2 MHz 512 is the lowest channel op-mode 2Call established on Traffic Channel (TCH) 649, Carrier Frequency 1877,6 MHz 649 is a mid channel of the full PCS band (blocks A to F) op-mode 3Call established on Traffic Channel (TCH) 810, Carrier Frequency 1909,8 MHz 810 is the highest channel op-mode 4Call established on Traffic Channel (TCH) 611, Carrier Frequency 1870 MHz 1870 MHz = lowest frequency of block B (see FCC §24.229) Page 7 of 31Testreport Reference: 4_Mobi_0201_GSM_FCCa

TTI-P-G 158 DASY Test-Report, 7-layers_ 6575_224d Page 1 of 32 Report Dosimetric Assessment of the Mobicom C6288i (FCC ID: P8D-C6288I) According to the FCC Requirements March 19, 2002 IMST GmbH Carl-Friedrich-Gauß-Str. 2 D-47475 Kamp-Lintfort Customer 7-layers AG Borsigstrasse 11 40880-Ratingen The test results only relate to the items tested. This report shall not be reproduced except in full without the written approval of the testing laboratory. dasy_report_fcc_supplement_c _2.1.doc/25.02.2002/CH DASY Test-Report, 7-layers_ 6575_224d Page 2 of 32 dasy_report_fcc_supplement_c _2.1.doc/25.02.2002/CH Executive Summary The C6288i is a new mobile phone from Mobicom operating in the 900 MHz and 1900 MHz frequency range. The device has a helix antenna. The system concepts used are the GSM 900 and PCS 1900 standards. The objective of the measurements done by IMST was the dosimetric assessment of one device in the PCS 1900 standard with different batteries. The examinations have been carried out with the dosimetric assessment system „DASY3“. The measurements were made according to the Supplement C to OET Bulletin 65 of the Federal Communications Commission (FCC) Guidelines [FCC 2001] for evaluating compliance of mobile and portable devices with FCC limits for human exposure (general population) to radiofrequency emissions. The Mobicom C6288i mobile phone (FCC ID: P8D-C6288I) is in compliance with the Federal Communications Commission (FCC) Guidelines [FCC 2001] for uncontrolled exposure. The phone was tested with the following batteries: “slim battery” and “extended battery”. In the body worn configuration additionally with: “belt clip” and “headset CH002”. prepared by: ........................................... reviewed by: .............................................. André van den Bosch Dipl.-Ing. Christoph Hennes test engineer quality assurance engineer IMST GmbH Carl-Friedrich-Gauß-Straße 2 D-47475 Kamp-Lintfort Tel. +49- 2842-981 373 Fax +49- 2842-981 399 email: [email protected] DASY Test-Report, 7-layers_ 6575_224d Page 3 of 32 dasy_report_fcc_supplement_c _2.1.doc/25.02.2002/CH Table of Contents 1 SUBJECT OF INVESTIGATION ................................................................................................................... 4 2 THE IEEE STANDARD C95.1 AND THE FCC EXPOSURE CRITERIA................................................. 4 2.1 DISTINCTION BETWEEN EXPOSED POPULATION, DURATION OF EXPOSURE AND FREQUENCIES...................... 4 2.2 DISTINCTION BETWEEN MAXIMUM PERMISSIBLE EXPOSURE AND SAR LIMITS................................................ 5 2.3 SAR LIMIT................................................................................................................................................... 5 3 THE FCC MEASUREMENT PROCEDURE ................................................................................................ 6 3.1 GENERAL REQUIREMENTS............................................................................................................................ 6 3.2 DEVICE OPERATING NEXT TO A PERSON’S EAR............................................................................................. 6 3.3 BODY-WORN AND OTHER CONFIGURATIONS................................................................................................. 9 4 THE MEASUREMENT SYSTEM ................................................................................................................ 10 4.1 MEASUREMENT PROCEDURE...................................................................................................................... 11 4.2 UNCERTAINTY ASSESSMENT........................................................................................................................ 12 5 SAR RESULTS ................................................................................................................................................ 13 6 EVALUATION ................................................................................................................................................ 15 7 APPENDIX ...................................................................................................................................................... 17 7.1 ADMINISTRATIVE DATA...............................................................................................................................17 7.2 DEVICE UNDER TEST AND TEST CONDITIONS.............................................................................................. 17 7.3 TISSUE RECIPES......................................................................................................................................... 17 7.4 MATERIAL PARAMETERS............................................................................................................................. 18 7.5 SIMPLIFIED PERFORMANCE CHECKING...................................................................................................... 18 7.6 ENVIRONMENT........................................................................................................................................... 21 7.7 TEST EQUIPMENT....................................................................................................................................... 21 7.8 PICTURES OF THE DEVICE UNDER TEST....................................................................................................... 22 7.9 TEST POSITIONS FOR THE DEVICE UNDER TEST........................................................................................... 25 7.10 PICTURES TO DEMONSTRATE THE REQUIRED LIQUID DEPTH........................................................................ 31 8 REFERENCES ................................................................................................................................................ 32 DASY Test-Report, 7-layers_ 6575_224d Page 4 of 32 dasy_report_fcc_supplement_c _2.1.doc/25.02.2002/CH 1 Subj…

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Mobicom Corporation 960 Holmdel Road Holmdel, NJ 07733 Phone (732) 772-2200 April 2, 2002 Mr. Chris Harvey MET Laboratories, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 Subject: FCCID: P8D-C6288I, Transmit Power Calibration Procedures for the C6288i Dear Mr. Harvey, The purpose of this letter is to explain why the highest conducted power listed in the EMC report (29.3dBm) is higher than the value in the SAR report (28.4dBm). Firstly let me explain the reason for the output power variation between the units tested for Part 24 and SAR. These two models are lab prototypes and as such they were calibrated at our R&D facility in New Jersey. The target power was set to 29.0dBm and an acceptable tolerance of ±1dB was applied to these units. The high tolerance is due to the fact that at the R&D facility we do not have a dedicated calibration setup. These units were calibrated on available test setups and cable loss was estimated rather than calculated. This is acceptable for prototype models, but this is not acceptable for production models. We will not see such transmit power variations with our production calibration setup. In production we use a fixed setup that is calibrated for cable loss and power accuracy, at the start of every 8-hour shift. Every mobile will run through the production calibration program, which uses an Agilent 8960 Series 10 Mobile Phone Manufacturing Test Set for power measurements. This test set has a measurement accuracy of <±0.4dB. Transmit power is adjusted to a set target that is controlled by production software. The target is accurate to <+0.1dB. Based on our manufacturing experience and test equipment specifications, we can reliably set the power of all mobiles to ±0.5dB (equipment accuracy + target accuracy) of our selected target output power. Mobicom has decided to set the C6288i transmit output power target to 28.5dBm. Applying the ±0.5dB accuracy of our production calibration setup to the 28.5dBm target will generate a highest possible transmit power of 29.0dBm. - 1 - Mobicom Corporation 960 Holmdel Road Holmdel, NJ 07733 Phone (732) 772-2200 April 2, 2002 Please feel free to contact me directly with any further questions about our production calibration programs, procedures and equipment. Sincerely, Joseph Murphy Senior Test Engineer [email protected] phone: 732-772-2215 fax: 732-834-9806 - 2 -

Chris Harvey From:Chris Harvey Sent:Monday, April 01, 2002 2:42 PM To:'Joe Murphy' Cc:Marianne Bosley Subject:Review of SAR information for FCC ID: P8D-C6288I, MT#12104 Joe, I have had a chance to preliminarily review the 3 SAR reports for the application for FCC ID: P8D-C6288I. The FCC SAR compliance statements contain the SAR Numbers from the previously approved model c6088i. These numbers are not required to be included in the manual and since the manual is now being used in more than one model phone, it may appear mis-leading. Upon completion of the complete application review there will be a note on the grant. The note will read something like this (there may be more added upon further review): The listed output power level represents the EIRP of the device. The highest reported SAR levels are: Head 0.248 W/kg, body 0.0674 W/kg. SAR compliance for body-worn operating configurations is limited to the specific belt-clips/holsters/accessories tested for this filing. SAR compliance for head and body-worn configurations is limited to the batteries tested for this filing. The End-users must be informed of the body-worn operating requirements for satisfying RF exposure compliance. Highest SAR levels are much lower than the comparable model with comparable RF power and identical antenna and antenna positioning. Please explain. Pages 13 and 16 of the SAR report have the incorrect model number of the phone listed in the Table 5 and Figure 9. Please explain. I have a concern that the highest RF conducted Power listed in the EMC report is 29.3dBm, where the SAR report has a highest value of 28.4dBm (which is 0.9 dB difference). If the SAR report had higher values than the EMC report, there would be no issue. I did not see a tolerance listed in the documentation provided. What is the Tune-up/tolerance? We will continue to review the application for Administrative, technical and SAR information. Best regards, Chris Harvey EMC Lab Director, MET Laboratories, Inc. 1-800-638-6057 x-310 [email protected]

TTI-P-G 158 DASY Test-Report, 7-layers_ 6575_224_SAR Distribution Plots_C6288i Page 1 o f Appendix for the Repor Dosimetric Assessment of Mobicom C6288i (FCC ID: P8D-C6288 I According to the FCC Requiremen SAR Distribution Plo t March 19, 2002 IMST GmbH Carl-Friedrich-Gauß-Str. 2 D-47475 Kamp-Lintfort Customer 7-layers AG Borsigstrasse 11 40880-Ratingen The test results only relate to the ite This report shall not be reproduced except in full without the wr approval of the testing labora t dasy_report_fcc_supplement_c 2.1_SAR-Plots.doc/22.02.2002/CH p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Table of Contents 1 SAR DISTRIBUTION PLOTS, TEST SIDE AMBIENT CONDITIONS............................... 2 SAR DISTRIBUTION PLOTS, PCS 1900.......................................................... 5 3 SAR Z-AXIS SCAN........................................................................................... p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH 1 SAR Distribution Plots, Test side ambient conditions. Fig. 1: Test side ambient measurements, 1900 MHz, head position. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Fig. 2: Test side ambient measurements, 1900 MHz, body worn position. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH 2 SAR Distribution Plots, PCS 1900 Fig. 3: SAR distribution, PCS 1900, channel 661, cheek position, left side of head, slim Cube 2: 0.221 W/kg p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Fig. 4: SAR distribution, PCS 1900, channel 661, tilted position, left side of head, slim battery. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Fig. 5: SAR distribution, PCS 1900, channel 661, cheek position, right side of he a battery. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Fig. 6: SAR distribution, PCS 1900, channel 661, Tilted position, right side of head, slim battery. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Fig. 7: SAR distribution, PCS 1900, channel 661, cheek position, left side of head, e battery. Cube 2: 0.222 W/kg. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Fig. 8: SAR distribution, PCS 1900, channel 661, tilted position, left side of head, extended battery. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Fig. 9: SAR distribution, PCS 1900, channel 661, cheek position, right side of head, e battery. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Fig. 10: SAR distribution, PCS 1900, channel 661, Tilted position, right side of head, extended battery. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Fig. 11: Worst case SAR distribution, PCS 1900, channel 512, body worn configura belt clip, headset CH002 and slim battery. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Fig. 12: Worst case SAR distribution, PCS 1900, channel 512, body worn configur a belt clip, headset CH002 and extended battery. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH 3 SAR z-axis scan The following pictures show the plots of SAR versus liquid depth for the worst case val Fig. 13: SAR versus liquid depth at the location with the highest value: PCS 1900, chan n cheek position, right side of head, extended battery. p, y___ _g dasy_report_fcc_supplement_c 2.1_SA R-Plots.doc/22.02.2002/CH Fig. 14: SAR versus liquid depth at the location with the highest value: PCS 1900, chan n body worn configuration with belt clip, headset CH002 and slim battery.

Report No. IXS 0214 September 2002 Error assessment for probe / interface proximity effects for an upright phantom geometry at 1800MHz Indexsar, Oakfield House, Cudworth Lane, Newdigate, Surrey RH5 5DR. UK. Tel: +44 (0) 1306 631233 Fax: +44 (0) 1306 631834 e-mail: [email protected] Introduction Indexsar document IXS-0209 described experimental tests undertaken at 900MHz to determine whether an additional uncertainty allowance should be made due to errors that might be introduced in the readings of an immersed SAR probe in an upright phantom geometry as the probe approaches the surface of the liquid volume. At 900MHz, the conclusion was that no additional uncertainty allowance was required. However, this may not be the case at higher frequencies, and so this document reports the results of additional tests performed at 1800MHz. There are various (time-related) differences between the two Reports. This one uses a different SAR probe and also a different box phantom, in which both the bottom and the side used for testing are 2mm thick. Some of the text below is repeated from IXS-0209 to ensure that this document can be read without reference to the report of the 900MHz study. In twin-head, bath phantoms with the ear located under the benchtop, benefits used to be claimed of the upright probe remaining approximately normal to the phantom shell in the vicinity of the source. Presumably, this geometry arose from expediency as a vertically-oriented probe can be controlled in a simple X,Y,Z manner in much the same way as a pen plotter. Latterly, it has been appreciated that this geometry is less than ideal in a half-head when the probe is exploring the regions close to the face or the back of the head. If the probe orientation is more variable with respect to the source field direction, then more account has to be taken for the full spherical isotropy of the SAR probe rather than just allowing for the smaller, axial isotropy. With the upright phantom head geometry employed in the SARA2 system, uncertainty allowance is, in any case, made for the full range of variability of probe response in all directions between probe and field. However, the shaft of the probe itself will introduce a distortion of the E-field within a tissue- simulant liquid and experiments have been conducted to determine if such effects are of any increased significance for the upright head geometry. Experimental tests The registration of the SARA2 interchangeable phantoms is based upon their positioning on a rotation turntable-base. When placed on the fixed mount, the combination of the head and base mount forms a large-diameter ball bearing offering precise repeatability of positioning. The phantom can be rotated to any angle, but pins are used for accurate angular registration at the principal cardinal points. The hole machined in the top of each headshell phantom is cut whilst rotating the head on a bearing base and is, therefore, centred about the rotation axis of the head. The angle of probe presentation within the head is constrained by the existence of this small penetration hole. The experimental aim of this study has been to compare the SAR probe readings at specific positions of the probe tip within the phantom when the probe was oriented at different angl…

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