Antenna swap question

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I didn't see a URL for the second item, and "WIRELESS 802.11N 300Mbps/2.4GHz PCI-E CARD" is a generic description. But all you need to know for compatibility is 1. whether the connector(s) on both antennas are the same (RP-SMA male), and 2. if both antennas cover the same band(s). So you can go on eBay, look for "2.4 GHz wifi antenna" or if you need, "dual band wifi antenna", and even specify the gain ("5...
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vmfantom

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Nov 28, 2017
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I didn't see a URL for the second item, and "WIRELESS 802.11N 300Mbps/2.4GHz PCI-E CARD" is a generic description. But all you need to know for compatibility is 1. whether the connector(s) on both antennas are the same (RP-SMA male), and 2. if both antennas cover the same band(s). So you can go on eBay, look for "2.4 GHz wifi antenna" or if you need, "dual band wifi antenna", and even specify the gain ("5 dBi", "12 dBi", etc.). Then you look at the photos in the listings and check that the connector is the same. No pin in the center would generally be RP-SMA male, and a pin in the center would generally be SMA male (which is less common outside China).

The listing for a GC-WB867D-I card includes a dual radio chain antenna with an RP-SMA male pigtail cable. You could just get 2 antennas with RP-SMA male connectors instead. "Ping" doesn't come into the equation since the delay over the few inches of cabling inside the antenna, or even the pigtail in the Amazon link, is around 1.5 nanoseconds.

To reiterate, these antennas (called "rubber ducks" or "omnis") are commodity products that cost $1 or less wholesale for 2/3/5 dBi gain, so just check on eBay, Deal Extreme, AliExpress, etc. for the best deal.
 
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