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Network Engineering

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    Dual-band devices usually do have two radios - one for 2.4GHz and one for 5GHz. Also, many dual-band devices end up with more than two antennas (MIMO, diversity, spatial multiplexing). Commented Jan 21, 2016 at 22:29
  • Wait; now I see what point you're trying to make. Just because it is dual-band, does not mean it can operate at two 2.4GHz frequencies simultaneously (or two 5GHz frequencies). Commented Jan 21, 2016 at 22:31
  • Thanks. So using a different frequency would definitely be better, but it would require more hardware (a third radio)? And they just skipped that for the cheapo wall-wart? Do I understand that right? Commented Jan 22, 2016 at 6:49
  • Also, you say that every device on the WLAN needs to have the same encryption/password. This is obviously true for any kind of AP. But would it also be true for a plain repeater? Doesn't a repeater just re-transmit frames without modifying or even reading them? Commented Jan 22, 2016 at 12:04
  • NO. A repeater is a client and an AP. Commented Jan 25, 2016 at 5:44