RF Exposure Info as requested in Correspondence 21262

FCC ID: K66VXA-150

RF Exposure Info

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FCCID_180547

November 19, 2001 Federal Communications Commission Equipment Approval Services 7435 Oakland Mills Road Columbia, MD 21046 Attn: Andy Leimer SUBJECT: Vertex Standard Co., Ltd. FCC ID: K66VXA-150 731 Confirmation No.: EA102553 Correspondence Ref. No.: 21262 Dear Andy: On behalf of Vertex Standard Co., Ltd. is an amendment in response to items 2 and 3 of your e-mail dated November 15, 2001 requesting additional information for the subject application. 1. Please find attached the revised pages of the SAR test report showing the measured dielectric parameters used for both the head and body SAR tests. Please note that the target tissue parameters for 150MHz were used in the SAR evaluation software. If there was any appreciable variation in the measured tissue parameters from the target values specified then the SAR was adjusted using the sensitivities to SAR (see attached “SAR Sensitivities”). 2. The determination of the E-field probe conversion numbers was performed by the system manufacturer’s recommended linear extrapolation routine. The extrapolation and interpolation was based on the two calibrated data points of 900 and 1800MHz in head simulating tissue. Included in this response is an example of an identical calibrated E-probe from the same system manufacturer. The conversion numbers outside the two calibration reference points for this probe were determined using numerical methods. There exists at this time no other method by the manufacturer of determining probe conversion below 800MHz. The chart and tables attached indicate the linearity of this E-field probe across several frequency bands with the associated uncertainty. The graph also shows that for frequencies below 800MHz the slope of the derived conversion numbers is steeper. If an extrapolation is performed from the two data points, 900 and 1800MHz, in the absence of numerical modeling, the probe conversion numbers derived are less than those expected. Since the conversion number is inversely proportional to the total SAR value determined, a lower than expected conversion number will result in an over estimation of the actual SAR. If you have any further questions regarding the above, please do not hesitate to contact me. Sincerely, Shawn McMillen General Manager Celltech Research Inc. Testing & Engineering Lab cc: Vertex Standard Co., Ltd. M. Flom Associates Celltech Research Inc. 1955 Moss Court, Kelowna, B.C. Canada V1Y 9L3 Tel. 250-860-3130 • Fax. 250-860-3110 • e-mail: info@celltechlabs.com www.celltechlabs.com

CELLTECH RESEARCH INC. Test Report S/N: 091801-167K66 1955 Moss Court, Kelowna Date(s) of Tests: Sept. 19, 2001 B.C. Canada V1Y 9L3 FCC SAR Evaluation _________________________________________________________________________________________________________ 4.0 SAR MEASUREMENT SUMMARY The measurement results were obtained with the EUT tested in the conditions described in this report. Detailed measurement data and plots showing the maximum SAR location of the EUT are reported in Appendix A. Face-Held SAR Measurements SAR Freq. Conducted Antenna Separation (w/kg) Channel Mode Distance (MHz) Power Position (cm) 100% 50% (W) Duty Cycle Duty Cycle 118.000 Low CW 1.55 Fixed 2.5 0.0753 0.0377 127.500 Mid CW 1.53 Fixed 2.5 0.917 0.459 136.975 High CW 1.43 Fixed 2.5 0.134 0.067 Mixture Type: Brain Dielectric Constant: 52.5 ANSI / IEEE C95.1 1992 - SAFETY LIMIT Conductivity: 0.75 Spatial Peak Controlled Exposure/Occupational (measured) BRAIN: 8.0 W/kg (averaged over 1 gram) Notes: 1. The SAR values found were below the maximum limit of 8.0 w/kg (controlled exposure). 2. The highest face-held SAR value found was 0.917 w/kg (100% duty cycle). 3. The EUT was tested for face-held SAR with a 2.5 cm separation distance between the front of the EUT and the outer surface of the planar phantom. 4. Ambient TEMPERATURE: 23.0 °C Relative HUMIDITY: 57.4 % Atmospheric PRESSURE: 100.4 kPa 5. Fluid Temperature 23.0 °C Face-held SAR Test Setup 2.5cm Separation Distance © 2001 Celltech Research Inc. VERTEX STANDARD FCC ID: K66VXA-150 3 AM PTT Air Band Radio Transceiver (118-137MHz)

CELLTECH RESEARCH INC. Test Report S/N: 091801-167K66 1955 Moss Court, Kelowna Date(s) of Tests: Sept. 19, 2001 B.C. Canada V1Y 9L3 FCC SAR Evaluation _________________________________________________________________________________________________________ Body-Worn SAR Measurements SAR Belt-Clip (w/kg) Freq. Conducted Antenna Separation Channel Mode (MHz) Power Position Distance 100% 50% (W) (cm) Duty Cycle Duty Cycle 118.000 Low CW 1.55 Fixed 1.4 3.24 1.62 127.500 Mid CW 1.53 Fixed 1.4 0.487 0.244 136.975 High CW 1.43 Fixed 1.4 0.144 0.072 Mixture Type: Body Dielectric Constant: 61.8 ANSI / IEEE C95.1 1992 - SAFETY LIMIT Conductivity: 0.79 Spatial Peak Controlled Exposure/Occupational (measured) BODY: 8.0 W/kg (averaged over 1 gram) Notes: 1. The SAR values found were below the maximum limit of 8.0 w/kg (controlled exposure). 2. The highest body-worn SAR value found was 3.24 w/kg (100% duty cycle). 3. The EUT was tested for body-worn SAR with the attached belt-clip providing a 1.4cm separation distance between the back of the EUT and the outer surface of the planar phantom. 4. Ambient TEMPERATURE: 23.0 °C Relative HUMIDITY: 57.4 % Atmospheric PRESSURE: 100.4 kPa 5. Fluid Temperature 23.0 °C Body-worn SAR Test Setup with 1.4cm Belt-Clip © 2001 Celltech Research Inc. VERTEX STANDARD FCC ID: K66VXA-150 4 AM PTT Air Band Radio Transceiver (118-137MHz)

CELLTECH RESEARCH INC. Test Report S/N: 091801-167K66 1955 Moss Court, Kelowna Date(s) of Tests: Sept. 19, 2001 B.C. Canada V1Y 9L3 FCC SAR Evaluation _________________________________________________________________________________________________________ 9.0 SIMULATED TISSUES The brain and body mixtures consist of a viscous gel using hydroxethylcellulose (HEC) gelling agent and saline solution. Preservation with a bactericide is added and visual inspection is made to ensure air bubbles are not trapped during the mixing process. The fluid was prepared according to standardized procedures and measured for dielectric parameters (permitivity and conductivity). MIXTURE % INGREDIENT 900MHz Brain 150MHz Brain 150MHz Body (Validation) Water 51.07 38.35 46.6 Sugar 47.31 55.5 49.7 Salt 1.15 5.15 2.6 HEC 0.23 1.0 1.0 Bactericide 0.24 0.1 0.1 10.0 TISSUE PARAMETERS The dielectric parameters of the fluids were verified prior to the SAR evaluation using an 85070C Dielectric Probe Kit and an 8753E Network Analyzer. The dielectric parameters of the fluid are as follows: TISSUE PARAMETERS – DIPOLE VALIDATION & EUT EVALUATION Equivalent Tissue Dielectric Constant Conductivity ρ (Kg/m3) (Date: 09/19/01) εr σ (mho/m) 900MHz Brain 41.5 ± 5% 0.97 ± 5% 1000 (Target) 900MHz Brain 41.2 ± 5% 0.96 ± 5% 1000 (Measured) 150MHz Brain 52.3 ± 5% 0.76 ± 5% 1000 (Target) 150MHz Brain 52.5 ± 5% 0.75 ± 5% 1000 (Measured) 150MHz Body 61.9 ± 5% 0.80 ± 5% 1000 (Target) 150MHz Body 61.8 ± 5% 0.79 ± 5% 1000 (Measured) © 2001 Celltech Research Inc. VERTEX STANDARD FCC ID: K66VXA-150 7 AM PTT Air Band Radio Transceiver (118-137MHz)

Application Note: SAR Sensitivities Application Note: SAR Sensitivities Introduction The measured SAR-values in homogeneous phantoms depend strongly on the electrical parameters of the liquid. Liquids with exactly matching parameters are difficult to produce; there is always a small error involved in the production or measurement of the liquid parameters. The following sensitivities allow the estimation of the influence of small parameter errors on the measured SAR values. The calculations are based on an approximation formula [1] for the SAR of an electrical dipole near the phantom surface and a adapted plane wave approximation for the penetration depth. The sensitivities are given in percent SAR change per percent change in the controlling parameter: d SAR / SAR S(x) = ——————— dx/x The controlling parameters x are: • ε : permitivity • σ : conductivity • ρ : brain density (= one over integration volume) For example: If The liquid permitivity increases by 2 percent and the sensitivity of the SAR to permitivity is -0.6 then the SAR will decrease by 1.2 percent. The sensitivities are given for surface SAR values and averaged SAR values for 1 g and 10 g cubes and for dipole distances d of 10mm (for frequencies below 1000 MHz) and 15mm (for frequencies above 1000 MHz) from the liquid surface. Liquid parameters are as proposed in the new standards (e.g., IEEE 1528). References [1] N. Kuster and Q. Balzano, “Energy absorption mechanism by biological bodies in the near field of dipole antennas above 300 MHz”, IEEE Transacions on Vehicular Technology, vol. 41(1), pp. 17-23, 1992. Schmid & Partner Engineering AG, Zurich, Switzerland

Application Note: SAR Sensitivities Parameter ε σ ρ f=300 MHz (εr=45.3, σ =0.87S/m, ρ=1g/cm 3 ) d=15mm: Surface - 0.41 + 0.48 — 1 g - 0.33 + 0.28 0.08 10 g - 0.26 + 0.09 0.16 f=450 MHz (εr=43.5, σ =0.87S/m, ρ=1g/cm 3 ) d=15mm: Surface - 0.56 + 0.67 — 1 g - 0.46 + 0.43 0.09 10 g - 0.37 + 0.22 0.17 f=835 MHz (εr=41.5, σ =0.90S/m, ρ=1g/cm 3 ) d=15mm: Surface - 0.70 + 0.86 — 1 g - 0.57 + 0.59 0.10 10 g - 0.45 + 0.35 0.18 f=900 MHz (εr=41.5, σ =0.97S/m, ρ=1g/cm 3 ) d=15mm: Surface - 0.69 + 0.86 — 1 g - 0.55 + 0.57 0.10 10 g - 0.44 + 0.32 0.19 f=1450 MHz (εr=40.5, σ =1.20/m, ρ=1g/cm 3 ) d=10mm: Surface - 0.73 + 0.91 — 1 g - 0.55 + 0.55 0.12 10 g - 0.42 + 0.27 0.22 f=1800 MHz (εr=40.0, σ =1.40S/m, ρ=1g/cm 3 ) d=10mm: Surface - 0.73 + 0.92 — 1 g - 0.52 + 0.51 0.14 10 g - 0.38 + 0.21 0.24 f=1900 MHz (εr=40.0, σ =1.40S/m, ρ=1g/cm 3 ) d=10mm: Surface - 0.73 + 0.93 — 1 g - 0.53 + 0.51 0.14 10 g - 0.39 + 0.22 0.24 f=2000 MHz (εr=40.0, σ =1.40S/m, ρ=1g/cm 3 ) d=10mm: Surface - 0.74 + 0.94 — 1 g - 0.53 + 0.52 0.14 10 g - 0.39 + 0.22 0.24 f=2450 MHz (εr=39.2, σ =1.80S/m, ρ=1g/cm 3 ) d=10mm: Surface - 0.74 + 0.93 — 1 g - 0.49 + 0.41 0.17 10 g - 0.34 + 0.12 0.28 f=3000 MHz (εr=38.5, σ =2.40S/m, ρ=1g/cm 3 ) d=10mm: Surface - 0.75 + 0.90 — 1 g - 0.45 + 0.28 0.21 10 g - 0.32 + 0.02 0.31 Schmid & Partner Engineering AG, Zurich, Switzerland

Dosimetric E-Field Probe ET3DV6 EXAMPLE Head Tissue Conversion Factor (+ standard deviation) εr = 44.4 400 MHz ConvF 7.64 + 8% σ = 0.87 mho/m CENELEC Head Tissue εr = 42.5 835 MHz ConvF 6.54 + 8% σ = 0.98 mho/m CENELEC Head Tissue εr = 42.3 900 MHz ConvF 6.41 + 8% σ = 0.99 mho/m CENELEC Head Tissue εr = 44.7 350 MHz ConvF 7.76 + 8% σ = 0.87 mho/m IEEE Head Tissue εr = 43.5 450 MHz ConvF 7.52 + 8% σ = 0.87 mho/m IEEE Head Tissue εr = 41.5 835 MHz ConvF 6.53 + 8% σ = 0.90 mho/m IEEE Head Tissue εr = 41.45 925 MHz ConvF 6.37 + 8% σ = 0.98 mho/m IEEE Head Tissue εr = 40.43 1500 MHz ConvF 6.04 + 8% σ = 1.23 mho/m IEEE Head Tissue εr = 40.0 σ = 1.40 mho/m 1900 MHz ConvF 5.41 + 8% IEEE Head Tissue εr = 39.2 σ = 1.8 mho/m 2450 MHz ConvF 5.18 + 8% IEEE Head Tissue εr = 37.2 2450 MHz ConvF 5.40 + 8% σ = 2.09 mho/m H1800 at 2450 MHz

Dosimetric E-Field Probe ET3DV6 \ EXAMPLE Body Tissue Conversion Factor (+ standard deviation) εr = 85.19 35 MHz ConvF 8.77 + 15% σ = 0.69 mho/m FCC Body Tissue εr = 69.93 75 MHz ConvF 8.68 + 10% σ = 0.72 mho/m FCC Body Tissue εr = 62.68 150 MHz ConvF 8.51 + 8% σ = 0.75 mho/m FCC Body Tissue εr = 58.41 350 MHz ConvF 7.64 + 8% σ = 0.80 mho/m FCC Body Tissue εr = 57.62 450 MHz ConvF 7.40 + 8% σ = 0.83 mho/m FCC Body Tissue εr = 56.25 784 MHz ConvF 6.38 + 8% σ = 0.93 mho/m FCC Body Tissue εr = 56.11 835 MHz ConvF 6.28 + 8% σ = 0.95 mho/m FCC Body Tissue εr = 55.9 925 MHz ConvF 6.10 + 8% σ = 0.98 mho/m FCC Body Tissue εr = 54.87 σ = 1.23 mho/m 1500 MHz ConvF 5.44 + 8% FCC Body Tissue εr = 54.3 σ = 1.45 mho/m 1900 MHz ConvF 4.82 + 8% FCC Body Tissue εr = 53.57 σ = 1.81 mho/m 2450 MHz ConvF 4.53 + 8% FCC Body Tissue

EXAMPLE Probe Conversion Factor versus Frequency 10 9 8 Conversion Factor 7 6 5 4 3 2 1 0 0 500 1000 1500 2000 2500 3000 Frequency (MHz)


Document Created: 2001-11-19 14:03:46
Document Modified: 2001-11-19 14:03:46
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