The study, conducted by the National Association of Broadcasters (see Technology Daily's PM Edition for more), argued that consumers will end up paying more under the a la carte models unveiled by Sirius CEO Mel Karmazin last month.

But a paragraph between NAB charts claims that "even the so-called 'best of both worlds' offer -- the 100 channel a la carte plan -- provides only a pre-selected sampling of the other service (a mere 11 channels and you have to buy a new radio)."

According to the source, NAB has incorrectly combined one a la carte plan, which does require a new radio, with a separate plan that would let the subscriber listen to all Sirius and select XM programming (with the same old receiver).

The NAB analysis is "misinformed and self-serving" and fails to mention that Sirius and XM would reduce the price for entry level service to $6.99 -- a reduction of 46 percent from the current base rate, the merger backer said.