From: "WWWR" <wwwr@xxxxxxxxxxxxx>
Reply-To: Mailing list for the International Radio Club of
America<irca@xxxxxxxxxxxxxxxx>
To: <irca@xxxxxxxxxxxxxxxx>, "NRC" <am@xxxxxxxxxxx>
Subject: [IRCA] Re: XM Indoors
Date: Tue, 11 Jan 2005 13:25:09 -0500 (Eastern Standard Time)
The Delphi plan for an XM signal repeater (described below) is interesting.
Something I have not seen mentioned anywhere is that there already exists
an
alternate delivery mechanism for XM Radio. In addition to the satellite
signal, there is a terrestrial signal. The XM receiver can select
whichever
source is delivering the currently best data. I think this is available
only in major metro areas and intended primarily to deal with building
obstructions. I imagine the signal I receive is intended for either the
Palm Beach or Fort Lauderdale areas, where taller buildings abound. Since
my satellite antenna is aimed at a fairly high angle - near the equator as
I
am - the problem of buildings in the line of sight is less here anyway,
were
there any.
In fact, my XM PCR reports three different signal strengths, east and west
satellite, and terrestrial. Most of the time, the terrestrial signal is
the
strongest at my location, but only by a little over the east coast
satellite
The terrestrial signal seems to have the widest level swings of the two.
Not surprisingly, the west coast satellite signal is substantially the
weakest.
I have no idea where the terrestrial signal originates in my area, nor do I
know if all XM radios can receive the signal. Interestingly, following our
rash of hurricanes this past season, the terrestrial signal all but
disappeared for a while, even beyond the week long power outage we
experienced here. It has dropped out briefly at other times too, but the
satellite just keeps on chugging.
Does anyone else have experience with or knowledge of these XM Radio
terrestrial signal sources?
W. Curt Deegan
Boca Raton, Florida
-------Original Message-------
Date: 01/11/05 06:33:02
To: 'Mailing list for the International Radio Club of America'
Subject: [IRCA] XM Indoors
Delphi Reveals XM Signal Repeater System
Homes, Offices Receive Transmitted Programming
Delphi Corp. said it's expanding its satellite radio product line-up with
the introduction of the Delphi XM Signal Repeater - a system that
wirelessly
rebroadcasts the XM satellite signal throughout most homes and small
offices
The repeater system includes both a transmitter and receive module. The
transmitter down-converts the XM signal through the XM home or audio system
antenna and rebroadcasts it through interior walls and floors at an
expected
distance between 75 and 100 feet.
While in range, one or more receive modules can acquire and up-convert the
signal back to the natural XM frequency - passing it through just like a
typical XM antenna. The end result is continuous XM programming wirelessly
throughout an indoor environment.
The Delphi XM Signal Repeater will debut this spring, at an expected retail
price of $169 for the complete system and $69 for each additional receive
module. For more information on XM, visit http://www.xmradio.com.
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