I wondered about this when I read the consent decree which has substantially the same wording that XM is sending out to owners of these radios. They don't really say how they might be non-compliant, but it seems logical to suspect the intentionally radiated signal is too loud.
My radio has an internal FM modulator and Xmit antenna. No way for me reduce that signal (except using the "cassette solution"). Because two of the remedies involve installing ferrites, I assume that one or more of the peripheral cables must also be radiating substantially. There are several models of receivers covered here, so spurious emissions/fixes might vary :-) Bob Sykes EMC Engineer From: [email protected] [mailto:[email protected]] On Behalf Of Larry Stillings Sent: Wednesday, August 13, 2008 1:18 PM To: 'Conway, Patrick R (Houston)'; [email protected] Subject: RE: FM Modulator Information Patrick, All, I have XM. The problem is this. The units are in violation of FCC rules. The output power in the FM band is limited to 250 dBuV/m at 3 Meters. The unit's FM modulators output power got significantly increased after testing and approval (of course they work really good). I have noticed that when driving by cars with Sirius, that my station will fade out and all of the sudden I will be listening to Howard Stern or whatever the other person has on, in their car. I believe both Sirius and XM are being required by the FCC to fix the non compliant radios, but not positive about this. More of an FYI, at my Camp I can have my Truck parked several hundred feet away from the radio in the camp and get the ball game. I have never measured mine, so I can't tell you if it is over powered or not, but I suspect so. Larry Stillings Compliance Worldwide, Inc. From: Conway, Patrick R (Houston) [mailto:[email protected]] Sent: Wednesday, August 13, 2008 12:23 PM To: [email protected] Subject: RE: FM Modulator Information A family member forwarded the below email. (I'm pleasantly surprised that they remember my field of work !) Does anyone on this list subscribe to XM? It would be interesting to know the details of the interference problem. Best Regards, Patrick Conway, NCE. Hewlett-Packard Co. [email protected] 281.514.2259 281-514.5473(fax) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~ ~~ From: XM Radio [mailto:[email protected]] Sent: Wednesday, August 13, 2008 9:11 AM To: Subject: FM Modulator Information Dear XM Subscriber, The FCC has notified XM that some of our older receiver models (generally, those purchased before August, 2006) may not operate in the manner required by the FCC and may cause interference to nearby FM radio users depending on how the XM radio is installed or used. The receiver models include the Roady2(r), SKYFi2(r), MyFi(r), Airware(r), Tao, RoadyXT(r), Xpress(tm), Sportscaster, XR9-XCX9, Jensen JXR9, inno(r), Helix(tm), and Nexus(r). Please note this notice does not apply to you if your new car came installed with an XM receiver. If you do have one or more of the receivers mentioned above and use it with the wireless FM option or you have had the receiver professionally installed, then we have several options available at no cost to you to alleviate this possible interference. Please visit our website at www.xmradio.com/fmmodinfo <http://email.xmradio.com/a/hBIoukKB7RzePB7SVYU$Ka5GK0m/xm4> or call us toll-free at 866-410-0096 to choose one of the following three options: Option A: We will send you ferrite beads to attach to your XM antenna and power adaptor cables. (Ferrite beads are typically placed on the end of data cables to reduce interference.) Option B: We will send you a replacement cassette adapter to use with your XM radio. Only choose this option if your car radio has a cassette player. Option C: If your car does not have a cassette player, we will provide you with ferrite beads and an installation kit, with hardware, to use in connection with a professional installation of your radio along with a coupon redeemable at no charge for professional installation. Please visit the following website, www.xmradio.com/fmmodinfo <http://email.xmradio.com/a/hBIoukKB7RzePB7SVYU$Ka5GK0m/xm4> for more information and to select your option. If you do not have access to the Internet, you may call 866-410-0096 for information on how to alleviate this possible interference. To help expedite your order, please have your 8-digit Radio ID (found on Channel 0 of your XM radio) and your FCC ID (found on the back, the bottom, or under the battery of your XM radio), available when you start this process. Thank you for your attention to this matter. Best Regards, XM Management Note - If you are using your XM radio's FM modulator to send the XM signal to a home or car stereo, your radio will work best if you use an unused FM frequency. Go to www.radio-locator.com/cgi-bin/vacant <http://email.xmradio.com/a/hBIoukKB7RzePB7SVYU$Ka5GK0m/xm5> to find the best FM frequencies to use in your area. Please do not reply to this email. This is a service email from XM Satellite Radio. Please note that you may receive service email in accordance with your XM Satellite Radio Customer Agreement, whether or not you elect to receive promotional email. XM Satellite Radio Inc., 1500 Eckington Place NE, Washington, D.C. 20002. Copyright 2008 XM Satellite Radio. All rights reserved. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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