Echo II or Echo 2 or ''variant'', may refer to:
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''Echo II''-class submarine of the Soviet Navy
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Echo 2 (satellite), a 1964 NASA communications satellite
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Echo II (expansion card)
The Echo II was a plug-in expansion card, speech synthesizer card for the Apple II and Apple IIe personal computers that allowed applications to use speech synthesis. The Echo II used the TMS5220 speech synthesis chip to synthesize speech. The ...
, a speech synthesizer card for the Apple II
See also
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EchoStar II, a 1990s communications satellite
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Echo (disambiguation)
An echo is a reflection of sound.
Echo may also refer to:
Mythology
* Echo (mythology), a nymph in Greek mythology, for whom the sound reflection phenomenon was named.
Arts, entertainment, and media Fictional entities
* Echo (DC Comics), vari ...
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