Antennas for wireless networks

Michael Torrie torriem at
Sat Apr 15 09:15:41 MDT 2006

On Fri, 2006-04-14 at 22:35 -0600, Andrew Jorgensen wrote:
> On 4/14/06, Sterling Jacobson <sterling at> wrote:
> > Unless you are a HAM licensed operator that configuration is illegal in 2.4GHz (antenna is not licensed for use with the system and you are not "qualified" to create your own and hook it up).
> >
> > You won't get caught though.
> Technically the parabolic tinfoil thing isn't an antenna.  You use the
> antenna that's already attached to the device.

You're modifying the antenna though.  So the device now operates well
outside the FCC approved specifications.

> And technically having a HAM license won't help you there.  That band
> isn't licensed to HAMs, it's licensed to everyone (with some
> restrictions).  It is true though that most devices are licensed only
> for the antenna the manufacturer sold it with.

No that's not true.  A Ham license indeed allows you to use unlicensed
frequencies at much higher power levels than approved for normal
unlicensed use.  This is subject to certain restrictions such as you
cannot use it for commercial things in any way, and you must broadcast
your ham call letters in some fashion.  Most ham folks are of the
opinion that setting your SSID to your ham call sign (your license) is

By the way getting a Ham license is now easier than ever before.  The
technician's license now no longer even requires morse code.


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