Mwave offers the Premiertek 2.4GHz Screw-On Swivel WiFi Antenna, model no. ANT-9dBi, for $7.99 with free shipping. That's tied with our mention from three weeks ago and the lowest total price we could find by $8. This omni-directional antenna attaches to the external antenna connector of a router and has a frequency range of 2,300-2,700MHz and gain of 9dBi.
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