¿Cuál es la ventaja de la conexión inalámbrica de doble banda?

He estado buscando un buen enrutador inalámbrico, y he visto muchos enrutadores de doble banda, pero todos los que he preguntado en las tiendas parecen darme una respuesta diferente sobre lo que realmente hace. Entonces, me gustaría preguntar a los gurús inalámbricos aquí en SU, ¿cuáles son las ventajas y desventajas de usar los enrutadores inalámbricos de doble banda cliché?

wireless-networking router dual-band

— Zack
fuente

802.11b and 802.11g both use the same frequency band, 2.4Ghz. 802.11n can also use the 5Ghz frequency band. By using this area as well as 2.4 you get more available channels, so potential for less interference. Also in the 5Ghz band 802.11n uses channels which are twice as large, which increases the speed.

Therefore a dual-band wireless router, which is 802.11n enabled, will give you faster bandwidth, less interference, and better reliability.

— gorilla
fuente

+1 however, this is the theory, i found that in practice with 5GHz the range is signifacantly shorter than with 2.4 GHz. and to take full advantage of dual-band technology, of course the clients must support 5GHz as well. a good Wireless N router suits me just fine.

Thanks for the info! Superuser comes through with a W again :)

— Zack

I should note that not all Wireless-N cards will pickup that 5Ghz signal. I found that out painfully while I watched my not-so-computer-savvy father reap the benefits of 5Ghz wireless while I was stuck on 2.4 Ghz.

— Zack