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I have seen many XM radio systems with 2 wire antennas and some only have 1 wire. What is the difference between the 2?

April 26, 2017ANTENNAS difference radio seen SYSTEMS wire XM

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I have seen many XM radio systems with 2 wire antennas and some only have 1 wire. What is the difference between the 2?

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Many of the older XM Radio systems and tuners had 2 wire antenna systems. (Yellow/Green) One wire was for reception of satellite based transmissions and the other was for reception of ground-based (terrestrial) transmissions. Newer XM receivers ave a single antenna wire (purple) , which integrates both the satellite and terrestrial signals into one wire. The two technologies are not compatible with one another, so if you have a 2 wire antenna input, you will need to purchase a 2 wire antenna. The new generation of slim antennas now use a 1 wire configuration. 4.8.