AFJ268500VHF-FM Mobile Marine Transceiver

INSTRUCTION MANUAL iM302 VHF MARINE TRANSCEIVER This device complies with Part 15 of the FCC rules. Operation is sub-ject to the following two conditions: (1) This device may not causeharmful interference, and (2) this device must accept any interferencereceived, including interference that may cause undesired operation. New2001 !IC-M302_draft.qxd 03.9.1 6:02 PM Page 1 (1,1) i New2001 FOREWARDThank you for purchasing this Icom product. The IC-M302 V HF MARINE TRANSCEIVER is designed and built with Icom’s state of the art technology and craftsman-ship. With proper care, this product should provide youwith years of trouble-free operation.We want to take a couple of moments of your time tothank you for making the IC-M302 your radio of choice,and hope you agree with Icom’s philosophy of “tech-nology first.” Many hours of research and developmentwent into the design of your IC-M302.D FEATURES ❍ Standard 4 × 8 ′′ flush mount design ❍ Built-in DSC meets ITU Class D requirement ❍ Rugged waterproof construction ❍ Large LCD with dot matrix characters ❍ Superior receiver performance ❍ Optional COMMANDMIC TM (2 systems are connectable) IMPORTANTREAD ALL INSTRUCTIONS carefully and completely before using the transceiver. SAVE THIS INSTRUCTION MANUAL — This in- struction manual contains important operating instructions forthe IC-M302. EXPLICIT DEFINITIONS WORD DEFINITION R WARNING! CAUTION NOTE Personal injury, fire hazard or electric shockmay occur.Equipment damage may occur.Recommended for optimum use. No risk ofpersonal injury, fire or electric shock. !IC-M302_draft.qxd 03.9.1 6:02 PM Page i (1,1) ii IN CASE OF EMERGENCYIf your vessel requires assistance, contact other vessels andthe Coast Guard by sending a distress call on Channel 16.Or, transmit your distress call using digital selective calling onChannel 70. NOTEA WARNING STICKER is supplied with the transceiver. To comply with FCC regulations, this sticker must be affixed insuch a location as to be readily seen from the operating con-trols of the radio as in the diagram below. Make sure the cho-sen location is clean and dry before applying the sticker. (p. ?)EXAMPLE USING DIGITAL SELECTIVE CALLING (Ch 70) DISTRESS CALL PROCEDURE1. While lifting up the switch cover, push and hold [DISTRESS] for 5 sec. until you hear 5 short beepschange to one long beep. 2. Wait for an acknowledgment from a coast station. • Channel 16 is automatically selected. 3. Push and hold [PTT], then transmit the appropriate information as at left. USING CHANNEL 16DISTRESS CALL PROCEDURE1. “MAYDAY MAYDAY MAYDAY.”2. “THIS IS ...............” (name of vessel)3. Your call sign or other indication of the vessel (AND 9- digit DSC ID if you have one). 4. “LOCATED AT ...............” (your position)5. The nature of the distress and assistance required.6. Any other information which might facilitate the rescue. New2001 !IC-M302_draft.qxd 03.9.1 6:02 PM Page ii (1,1) iii New2001 RADIO OPERATOR WARNING Icom requires the radio operator to meet the FCC Requirements for Radio Frequency Expo-sure.An omnidirectional antenna with gain notgreater than 9 dBi must be mounted a minimumof 5 meters (measured from the lowest point ofthe antenna) vertically above the main deck and all possible personnel. This is the minimum safe separationdistance estimated to meet all RF exposure compliance re-quirements. This 5 meter distance is based on the FCC SafeMaximum Permissible Exposure (MPE) distance of 3 metersadded to the height of an adult (2 meters) and is appropriatefor all vessels.For watercraft without suitable structures, the antenna mustbe mounted so as to maintain a minimum of 1 meter verticallybetween the antenna, (measured from the lowest point of theantenna), to the heads of all persons AND all persons muststay outside of the 3 meter MPE radius.Do not transmit with radio and antenna when persons arewithin the MPE radius of the antenna, unless such persons(such as driver or radio operator) are shielded from antennafield by a grounded metallic barrier. The MPE Radius is theminimum distance from the antenna axis that person shouldmaintain in order to avoid RF exposure higher than the allow-able MPE level set by FCC. WARNING FAILURE TO OBSERVE THESE LIMITS MAY ALLOWTHOSE WITHIN THE MPE RADIUS TO EXPERIENCE RFRADIATION ABSORPTION WHICH EXCEEDS THE FCCMAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMIT.IT IS THE RESPONSIBILITY OF THE RADIO OPERATORTO ENSURE THAT THE MAXIMUM PERMISSIBLE EXPO-SURE LIMITS ARE OBSERVED AT ALL TIMES DURINGRADIO TRANSMISSION. THE RADIO OPERATOR IS TOENSURE THAT NO BYSTANDERS COME WITHIN THERADIUS OF THE MAXIMUM PERMISSIBLE EXPOSURELIMITS.Determining MPE RadiusTHE MAXIMUM PERMISSIBLE EXPOSURE (MPE) RA-DIUS HAS BEEN ESTIMATED TO BE A RADIUS OFABOUT 3M PER OET BULLETIN 65 OF THE FCC.THIS ESTIMATE IS MADE ASSUMING THE MAXIMUMPOWER OF THE RADIO AND ANTENNAS WITH A MAXI-MUM GAIN OF 9dBi ARE USED FOR A SHIP MOUNTEDSYSTEM. !IC-M302_draft.qxd 03.9.1 6:02 PM Page iii (1,1) iv New2001 FOREWORD .............................. iIMPORTANT .............................. iEXPLICIT DEFINITIONS ............... iIN CASE OF EMERGENCY ......... iiNOTE ....................................... iiRADIO OPERATOR WARNING ... iiiTABLE OF CONTENTS ............... ivPRECAUTION ........................... v1 OPERATING RULES ............... 12 PANEL DESCRIPTION ......... 2–4  Panel description ............... 2  Function display .................. 3  Microphone ........................ 4 3 BASIC OPERATION ............ 5–8  Channel selection ............... 5  Receiving and transmitting ... 7  Call channel programming ... 8  Channel names .................. 8  Microphone lock function ...... 8 4 DUALWATCH/TRI-WATCH ...... 9  Description ........................ 9  Operation ........................... 9 5 SCAN OPERATION ......... 10–11  Scan types ........................ 10  Setting tag channels............ 11  Starting a scan .................. 11 6 SET MODE ..................... 12–14  SET mode …

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Tri Luu From: "William Graff" <[email protected]> To: "'Tri Luu'" <[email protected]> Cc: "Masaaki Takahashi" <[email protected]> Sent: Thursday, October 30, 2003 4:14 PM Attach: ATCB Comments 10292003 - CONFID.pdf; ATCB Comments 10272003.pdf Subject: RE: Icom Marine Radio Comments Page 1 of 3 10/31/2003 Dear Mr. Luu, My apologies for not responding earlier. I took ill with an early cold/flu and was not able to complete my response to you until today. Please be sure the requested documents are uploaded to the AmericanTCB.com website. Thanks, Bill ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~ William H. Graff, NARTE Certified ~ President and Director of Engineering ~ AmericanTCB, Inc. ~ 6731 Whittier Ave, ~ McLean, VA 22101 ~ mailto:[email protected] ~ Direct Phone: (480) 317-0683 ~ Direct Mobile: (602) 790-6788 ~ Corporate Phone: (703) 847-4700 ~ Corporate FAX: (703) 847-6888 ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -----Original Message----- From: Tri Luu [mailto:[email protected]] Sent: Tuesday, October 28, 2003 11:50 AM To: William Graff Subject: Re: Icom Marine Radio Comments Hi Mr. Graff, Please find our answers below about your comments: (1) The RF Exposure information is in the User Manual, and it was extracted and sent it to you on a separate file. Please attached. Yesterday I uploaded a revised test report with the revised MPE with 50% duty cycle, please also find it in the attachment. (2) Both G3E and G2B Emissions were included in the test reports. Can you review them carefully to avoid time for us to answer all of the un-necessary questions. (3) Thanks for your recommendation but we have never had any problems with FCC, IC and other FCC TCB for our way of doing. (4) Thanks for your recommendation but we have never had any problems with FCC, IC and other FCC TCB for our way of doing. (5) The measurements BW indicated in the conducted plots and our test procedures, Exhibit 8.2. Please review carefully to avoid un-necessary questions an answer which could delay the certification process. (6) There is no way anyone can use 100 KHz RBW to measure the occupied BW. FCC recommendation is minimum 100 Hz RBW for 12.5 kHz Channel Spacing and minimum 300 Hz RBW for 25 KHz Channel Spacing. If we use 100 kHz RBW for measuring occupied bandwidth of a narrowband signal with OBW< 20 KHz, no radio can pass FCC Limits. (7) Please refer to our test method in Exhibit 8 of the test report (8) It is not necessary to list all channel frequency in the Users Manual since we know the lowest, highest frequencies of the band and the channel spacing. The channel frequency shall be known. Besides this is only a Technical Acceptance. The Frequency Assignment for regional application will be required Users' License. (9) We will request for the Tuning Procedures from ICOM and provide it to you later (10) We employ ANSI C63.4 as test procedure with cable arrangement specified in Figure 9(c) Tri Luu, P.Eng. Ultratech Engineering Labs Inc. ----- Original Message ----- From: "William Graff" <[email protected] > To: <[email protected]> Sent: Monday, October 27, 2003 4:35 PM Subject: Icom Marine Radio Comments > Please see attached comments > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > ~ William H. Graff, NARTE Certified > ~ President and Director of Engineering > ~ AmericanTCB, Inc. > ~ 6731 Whittier Ave, > ~ McLean, VA 22101 > ~ mailto:[email protected] > ~ Direct Phone: (480) 317-0683 > ~ Direct Mobile: (602) 790-6788 Page 2 of 3 10/31/2003 > ~ Corporate Phone: (703) 847-4700 > ~ Corporate FAX: (703) 847-6888 > ~ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Page 3 of 3 10/31/2003

Tri Luu From: "Tri Luu" <[email protected]> To: "William Graff" <[email protected]> Cc: "[email protected] Takahashi" <[email protected]> Sent: Friday, October 31, 2003 1:51 PM Sub ject: Re: Icom Marine Radio Comments - MORE! Page 1 of 5 10/31/2003 Hi Graff, Please also see this correspondence upload to your web site. (1) The separate was uploaded to your site at the beginning, where did it go. I will upload it again. (2) The minimum RBW required is 300 Hz, we test at 1 kHz RBW which is more than the minimum requirement. Why do we have to do it again, I do not understand?. The DSC signal if from EUT's internal source. (3) We never have the request from FCC Direct, TIMCO or even American TCB for the statement of compliance with ITU recommendation for DSC. But we will request it from ICOM. (4) We test the conducted and radiated emissions based on FCC requirements with the RBW of 120 KHz more than what required for narrowband signal (30 kHz RBW). Why do we have to do it again. We never have this request from FCC Direct and TIMCO for the past 14 years with our method of measurements, why certainly we have the problem now. (5) The test procedure for radiated power using substitution method was included in Sec. 8.2.2 of the test report. Dipole antennas are used for frequencies below 1 GHz and horn antenna were used for frequencies above 1 GHz. They are all stated very clearly in Sec. 8.2.2. Please review them again. Tri Luu ----- Original Message ----- From: "William Graff" <[email protected] > To: "'Tri Luu'" <[email protected]> Cc: "'[email protected] Takahashi'" <[email protected] > Sent: Friday, October 31, 2003 10:01 AM Subject: RE: Icom Marine Radio Comments - MORE! Tri, Additional documents were uploaded to our site. But no significant changes to the Test Report were attempted. 1.) Please provide MPE estimation as a separate Exhibit, not a part of the Test Report. Please upload this to the RF Exposure exhibit. This is an FCC requirement. 2.) Please provide a better occupied BW plot for G2B emissions. Be sure to observe the requested 300Hz RBW when taking this data. Please describe the tones utilized in J2B signaling. 3.) Please have Applicant (ICOM) provide an attestation to the appropriate ITU recommendations for DSC. 4.) Please provide measurement data for both Radiated and Conducted emissions that DOES NOT use CISPR 120KHz bandwidths. Use the appropriate bandwidths as specified in TIA/EIA 603 for 25KHz equipment. 5.) Please provide addition comments on the radiated Tx spurious using the substitution method. I erroneously identified the horn antenna as used below 1GHz when I should have stated above 1GHz. I apologize for this error. The rest of my comment stands. 6.) Was the permitted channel list and powers specified in Part 80 and the Manual verified? This is an FCC critical requirement. If you will solve these issues then the Grant will be issued. Bill -----Original Message----- From: Tri Luu [mailto:[email protected]] Sent: Friday, October 31, 2003 12:37 PM To: William Graff Cc: [email protected] Takahashi Subject: Re: Icom Marine Radio Comments Hi Mr. Graff, The Tuning procedure and test report have already uploaded to TIMCO web site. Tri Luu ----- Ori ginal Message ----- Page 2 of 5 10/31/2003 From: "William Graff" <[email protected]> To: "'Tri Luu'" <[email protected]> Cc: "'[email protected] Takahashi'" <[email protected]> Sent: Friday, October 31, 2003 7:25 AM Subject: RE: Icom Marine Radio Comments Tri, What about tune-up, MPE estimation and requested corrections to the Test Report? These still need to be uploaded to our website. If you sent them to me via email attachment, they are not tracked. They MUST go through the website. Bill -----Original Message----- From: Tri Luu [mailto:[email protected]] Sent: Saturday, November 01, 2003 1:20 AM To: William Graff Cc: [email protected] Takahashi Subject: Re: Icom Marine Radio Comments Hi Graff, I will upload this email back to the AmericanTCB web site immediately. Tri Luu ----- Original Message ----- From: "William Graff" <[email protected] > To: "'Tri Luu'" <tri@ultratech -labs.com> Cc: "Masaaki Takahashi" <[email protected]> Sent: Thursday, October 30, 2003 4:14 PM Subject: RE: Icom Marine Radio Comments Dear Mr. Luu, My apologies for not responding earlier. I took ill with an early cold/flu and was not able to complete my response to you until today. Please be sure the requested documents are uploaded to the AmericanTCB.com website. Thanks, Bill Page 3 of 5 10/31/2003 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~ William H. Graff, NARTE Certified ~ President and Director of Engineering ~ AmericanTCB, Inc. ~ 6731 Whittier Ave, ~ McLean, VA 22101 ~ mailto:[email protected] ~ Direct Phone: (480) 317-0683 ~ Direct Mobile: (602) 790-6788 ~ Corporate Phone: (703) 847-4700 ~ Corporate FAX: (703) 847-6888 ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -----Original Message----- From: Tri Luu [mailto:[email protected]] Sent: Tuesday, October 28, 2003 11:50 AM To: William Graff Subject: Re: Icom Marine Radio Comments Hi Mr. Graff, Please find our answers below about your comments: (1) The RF Exposure information is in the User Manual, and it was extracted and sent it to you on a separate file. Please attached. Yesterday I uploaded a revised test report with the revised MPE with 50% duty cycle, please also find it in the attachment. (2) Both G3E and G2B Emissions were included in the test reports. Can you review them carefully to avoid time for us to answer all of the un-necessary questions. (3) Thanks for your recommendation but we have never had any problems with FCC, IC and other FCC TCB for our way of doing. (4) Thanks for your recommendation but we have never had any problems with FCC, IC and other FCC TCB for our way of doing. (5) The measurements BW indicated in the cond…

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Tri Luu From: "Tri Luu" <[email protected]> To: "William Graff" <[email protected]> Cc: "Victor Kee" <[email protected]>; "[email protected] Takahashi" <[email protected]> Sent: Friday, October 31, 2003 4:17 PM Sub ject: Re: Icom Marine Radio Comments - MORE! Page 1 of 7 10/31/2003 Hi Mr. Graff, I have tried upload the RF Exposure Info to your web site and I got the reply that as below: Upload Report AFJ268500 ATCB000873 The file 1 [RF Expossure Info_IC-M302.PDF] already exist. Files Uploaded = 0 which means it is there, please check it again. My answers for the other questions will not be different from what I have already given to you. It will be your decision to accept or refuse my answers/application since I do not agree with your questions at all. If FCC does not require the statement for compliance with ITU recommendation, we would like not to submit it in order cut down the paperwork. Tri Luu, P.Eng. Ultratech Engineering Labs Inc. ----- Ori ginal Message ----- From: "William Graff" <[email protected]> To: "'Tri Luu'" <[email protected]> Cc: "'[email protected] Takahashi'" <[email protected]> Sent: Friday, October 31, 2003 11:40 AM Subject: RE: Icom Marine Radio Comments - MORE! Tri, 1.) I just checked - there is no separated RF Exposure information in the RF Exposure exhibit. Perhaps their was a transmission failure? 2.) The idea is to go as close as possible to 1% of the emission bandwidth without going under 1%. For 16K0F3E, 1% of 16,000 = 160Hz. But since 160Hz is not available on a typical spectrum analyzer, the de-facto rule says use 300Hz. Your 1000Hz RBW is too large. When the ITU recommendation [item #3] is received we will have an acceptable standard that describes the DCS modulation, and the tone description portion of this request will become moot. 3.) This is now required per the last FCC/TCB training sessions. It has for years been prudent to supply DSC attestations, even if not required, where appropriate. 4.) Both ANSI C63.4 and CISPR use 120KHz for all radiated emission measurements of Unlicensed and Information Technology equipment. The specification was never designed for Licensed transmitter measurements - and never for direct feed of a transmitter to a spectrum analyzer. Just look at the differences between the near perfect "Gaussian" IF window of a spectrum analyzer and the "Rectangular" CISPIR IF bandwidth. The differences should be easily apparent, and must always be avoided. This becomes of paramount importance when looking at new technologies such as OFDM and 3G. 5.) How was the effect of impedance mismatch causing incorrect loading of the reference horn accounted for during substitution test? All broadband antennas are never at 50ohm Z across their entire frequency range. Your signal generator may claim the reference antenna is loaded with a specified power, but mismatch will change that considerably. Often the insertion of a simple 3 or 6 dB pad at the antenna connector is good enough. With higher frequencies and longer transmission lines the effect is compounded. My question, very simply, is was SWR taken into consideration to find the "for real" power loaded onto your antenna? Bill -----Original Message----- From: Tri Luu [mailto:[email protected]] Sent: Friday, October 31, 2003 2:52 PM To: William Graff Page 2 of 7 10/31/2003 Cc: [email protected] Takahashi Subject: Re: Icom Marine Radio Comments - MORE! Hi Graff, Please also see this correspondence upload to your web site. (1) The separate was uploaded to your site at the beginning, where did it go. I will upload it again. (2) The minimum RBW required is 300 Hz, we test at 1 kHz RBW which is more than the minimum requirement. Why do we have to do it again, I do not understand?. The DSC signal if from EUT's internal source. (3) We never have the request from FCC Direct, TIMCO or even American TCB for the statement of compliance with ITU recommendation for DSC. But we will request it from ICOM. (4) We test the conducted and radiated emissions based on FCC requirements with the RBW of 120 KHz more than what required for narrowband signal (30 kHz RBW). Why do we have to do it again. We never have this request from FCC Direct and TIMCO for the past 14 years with our method of measurements, why certainly we have the problem now. (5) The test procedure for radiated power using substitution method was included in Sec. 8.2.2 of the test report. Dipole antennas are used for frequencies below 1 GHz and horn antenna were used for frequencies above 1 GHz. They are all stated very clearly in Sec. 8.2.2. Please review them again. Tri Luu ----- Original Message ----- From: "William Graff" <[email protected] > To: "'Tri Luu'" <[email protected]> Cc: "'[email protected] Takahashi'" <[email protected] > Sent: Friday, October 31, 2003 10:01 AM Subject: RE: Icom Marine Radio Comments - MORE! Tri, Additional documents were uploaded to our site. But no significant changes to the Test Report were attempted. 1.) Please provide MPE estimation as a separate Exhibit, not a part of the Test Report. Please upload this to the RF Exposure exhibit. This is an FCC re quirement. Page 3 of 7 10/31/2003 2.) Please provide a better occupied BW plot for G2B emissions. Be sure to observe the requested 300Hz RBW when taking this data. Please describe the tones utilized in J2B signaling. 3.) Please have Applicant (ICOM) provide an attestation to the appropriate ITU recommendations for DSC. 4.) Please provide measurement data for both Radiated and Conducted emissions that DOES NOT use CISPR 120KHz bandwidths. Use the appropriate bandwidths as specified in TIA/EIA 603 for 25KHz equipment. 5.) Please provide addition comments on the radiated Tx spurious using the substitution method. I erroneously identified the horn antenna as used below 1GHz when I should have stated above 1GHz. I apologize for t…

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Tri Luu From: "Tri Luu" <[email protected]> To: "William Graff" <[email protected]> Cc: "[email protected] Takahashi" <[email protected]> Sent: Wednesday, November 05, 2003 12:25 PM Sub ject: Re: Icom Marine Radio Comments - MORE! Page 1 of 7 11/5/2003 Hi Mr. Graff, Please find the answers below for your questions, (1) The RF Exposure Info was again uploaded to ATCB web site (2) Regardless of what other standard recommended, 1 KHz RBW is required by IC and recommended by FCC for 99% OBW measurement for narrowband radio transmitter such as VHF and UHF. Long ago we measure 99% OBW using 300 Hz RBW (for 25 KHz Channel Spacing) and FCC requested to repeat the test with 1 KHz RBW as what they prefer so that they can see more modulation components. We will have to stick with this method of measurements to satisfy both FCC & IC requirements as the EUT is tested at one time for compliance with both FCC & IC standards. We believe it is more stringent to use 1 KHz RBW than 300 Hz BW; there should be no concern about the compliance based on our measurement method. (3) We will provide you with the Manufacturer's Attestation from now on for DSC compliance with ITU recommendation. The ICOM's attestation was uploaded to ATCB site. (4) For Narrow Band Radio such as VHF & UHF, FCC requires MINIMUM 100 KHz RBW for any frequency from lowest to 10th harmonic of the Tx highest frequency, we use 120 KHz (by mistake) but it shall be acceptable without re-tests for the following reasons: (a) The RBW we used is more than FCC minimum requirement of 100 kHz throughout the measurement bands including frequency above 1 GHz. (b) The measured RF emissions are very low (at least 15 below the limit) and there is no risk of failure by using 100 kHz RBW. (5) The E-filed were measured using broadband antenna (biconilog) for frequency 1 GHz and horn antenna for frequency above 1 GHz. ERP (substitution methods) was measured using DIPOLE antennas for frequency below 1 GHz. No ERP measurements using substitution are conducted for frequency above 1 GHz since there is no significant E-field was found for this EUT above 1 GHz. No judgment is required for this question. THERE IS NO NEED TO REVISE THE TEST REPORT BASED ON THE EXPLANATION AS ABOVE. Tri Luu, P.Eng. Ultratech Engineering Labs Inc. ----- Original Message ----- From: "William Graff" <wh [email protected]> To: "'Tri Luu'" <[email protected]> Cc: "'[email protected] Takahashi'" <[email protected]> Sent: Friday, October 31, 2003 11:40 AM Subject: RE: Icom Marine Radio Comments - MORE! Tri, 1.) I just checked - there is no separated RF Exposure information in the RF Exposure exhibit. Perhaps their was a transmission failure? 2.) The idea is to go as close as possible to 1% of the emission bandwidth without going under 1%. For 16K0F3E, 1% of 16,000 = 160Hz. But since 160Hz is not available on a typical spectrum analyzer, the de-facto rule says use 300Hz. Your 1000Hz RBW is too large. When the ITU recommendation [item #3] is received we will have an acceptable standard that describes the DCS modulation, and the tone description portion of this request will become moot. 3.) This is now required per the last FCC/TCB training sessions. It has for years been prudent to supply DSC attestations, even if not required, where appropriate. 4.) Both ANSI C63.4 and CISPR use 120KHz for all radiated emission measurements of Unlicensed and Information Technology equipment. The specification was never designed for Licensed transmitter measurements - and never for direct feed of a transmitter to a spectrum analyzer. Just look at the differences between the near perfect "Gaussian" IF window of a spectrum analyzer and the "Rectangular" CISPIR IF bandwidth. The differences should be easily apparent, and must always be avoided. This becomes of paramount importance when looking at new technologies such as OFDM and 3G. 5.) How was the effect of impedance mismatch causing incorrect loading of the reference horn accounted for during substitution test? All broadband antennas are never at 50ohm Z across their entire frequency range. Your signal generator may claim the reference antenna is loaded with a specified power, but mismatch will change that considerably. Often the insertion of a simple 3 or 6 dB pad at the antenna connector is good enough. With higher frequencies and longer transmission lines the effect is compounded. My question, very simply, is was SWR taken into consideration to find the "for real" power loaded onto your antenna? Bill -----Original Message----- From: Tri Luu [mailto:[email protected]] Sent: Friday, October 31, 2003 2:52 PM To: William Graff Cc: [email protected] Takahashi Sub ject: Re: Icom Marine Radio Comments - MORE! Page 2 of 7 11/5/2003 Hi Graff, Please also see this correspondence upload to your web site. (1) The separate was uploaded to your site at the beginning, where did it go. I will upload it again. (2) The minimum RBW required is 300 Hz, we test at 1 kHz RBW which is more than the minimum requirement. Why do we have to do it again, I do not understand?. The DSC signal if from EUT's internal source. (3) We never have the request from FCC Direct, TIMCO or even American TCB for the statement of compliance with ITU recommendation for DSC. But we will request it from ICOM. (4) We test the conducted and radiated emissions based on FCC requirements with the RBW of 120 KHz more than what required for narrowband signal (30 kHz RBW). Why do we have to do it again. We never have this request from FCC Direct and TIMCO for the past 14 years with our method of measurements, why certainly we have the problem now. (5) The test procedure for radiated power using substitution method was included in Sec. 8.2.2 of the test report. Dipole antennas are used for frequencies below 1 GHz and horn antenna were used for frequencies above 1 GHz. They are all stated very clearly in Sec. 8.2.…

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October 20, 2003 AmericanTCB, Inc. 6731 Whittier Avenue, Suite C110 McLean, VA 22101 Subject: Type Acceptance Application under FCC 47 CFR, Parts 2 and 80 Operating in the Frequency Band 156.025-157.425 MHz. Applicant: ICOM Incorporated Product: VHF Marine Transceiver Model: IC-M302 FCC ID: AFJ268500 Dear Sir/Madam, As appointed agent for ICOM Incorporated, we would like to submit the application to Federal Communications Commission for certification of the above product. Please review all files uploaded to AmericanTCB electronic filing site. If you have any queries, please do not hesitate to contact us. Yours truly, Tri Minh Luu, P. Eng., V.P., Engineering TML/DH UltraTech Group of Labs 3000 Bristol Circle, Oakville, Ontario, Canada L6H 6G4 Tel.: (905) 829-1570 Fax.: (905) 829-8050 Website: www.ultratech-labs.com Email: [email protected] 31040/SIT C-1376 46390-2049 200093-0 2 00-034 SL2-IN-E-1119R

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 November 4, 2003 RE: ICOM FCC ID: AFJ268500 I have a few comments on this Application. 1.) The RF Exposure exhibit is an excellent example of advice to consumers that must be included with this product when marketed. However, the purpose of the Exhibit is also to “show the math” and provide justification – even if through just MPE estimation - of the claims presented in the Manual. Kindly provide Section 6.6 as a separate Exhibit and upload to the AmericanTCB.com website for forwarding to the Commission. 2.) Please provide additional details of the G2B emission. An occupied bandwidth plot of typical DSC emission is expected. Please provide an attestation referring to “ITU-R Recommendation M.493-9 for DSC” (IEC 61097-3), if appropriate. Your explanation for the 16K0G3E is acceptable. 3.) It is customary to provide the frequency vs. temperature data as a plot. This will aid in the review of your test data. 4.) It is customary to provide the modulation limiting data as a plot. The accepted FCC methodology is simpler than that which you have presented. First find an audio input that will give a 50% modulation reference (2.5KHz) to use as a 0dB audio reference. Next step in 5dB steps from -20dB to +20dB of the indicated audio reference. Repeat for both 300 and 3000Hz audio input using the identical audio steps found using the 1KHz reference. Please …

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