2.4Ghz vs. 5GHz antenna

[William Park]

Hi,

Question:
    Is there practical difference between antenna on 2.4GHz
    adapter/router and antenna on dual-band 2.4GHz-5GHz adapter/router?

Problem:
    I have Linksys WMP-600N PCI adapter (dual-band) which keeps losing
    connection.  Because of physical contraints, I've replaced its 2
    antennas with external antennas (TP-LINK TL-ANT2408C) whose specs
    say 2.4-2.4835GHz.  I couldn't find anything that says 5GHz or
    dual-band.  Maybe, I'm using "wrong" kind of antennas?
-- 
William
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