Active Power plans to ship alpha units
late this year with full-scale production planned for mid-2005.
Two new AN series units, model AN-15 (VHF frequency) and 900MHz model AN-90, are four-line alpha units
that can store up to 40 messages.
Their share in aggregate future consumption is smaller in the asymmetric case, because in this state there is a price difference: they pay 2p' to get alpha units
while the informed pay only p'.
Two other alpha units
also have been sold and shipped.
97 and the Advisor, one of the first alpha units
available at retail but geared more for the business user, for $199.
The two alpha units
, SkyWord Classic and Pro, are expected to sell for $119.
Manufacturers and carriers hope to step up sales of alpha units
by upgrading numeric users to text messaging.