[155504] in North American Network Operators' Group
Re: Any Idea About Spectrum-DMR-104-1 ?!
daemon@ATHENA.MIT.EDU (Owen DeLong)
Mon Aug 13 16:46:54 2012
From: Owen DeLong <owen@delong.com>
In-Reply-To: <CAGqGmqYPbDqHTph24vJG-D2YKFy7+7fKBqybFEkfBHf=axR6dw@mail.gmail.com>
Date: Mon, 13 Aug 2012 13:43:35 -0700
To: Shahab Vahabzadeh <sh.vahabzadeh@gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
There are a lot of factors to consider when trying to use ISM band for =
high
bandwidth...
1. What kind of distance do you want to cover?
2. Is this point to point, or point to multipoint?
3. Directional or Omni?
4. Antenna Height, Fresnel Zone, Noise Floor, other path =
interference, etc.
The 5.725-5.825Ghz band is used by 802.11a/n and is the only unlicensed
spectrum around 5.8Ghz. A 300Mbps symbol rate should be achievable
with wideband channels in that frequency range. As an example, an Apple
Airport Extreme can do better than 150Mbps full duplex on 802.11n/5Ghz.
Owen
On Aug 13, 2012, at 10:57 , Shahab Vahabzadeh <sh.vahabzadeh@gmail.com> =
wrote:
> Dear Friends,
> I wanna buy a free license radio with more that 150Mpbs capacity (full
> duplex), and I found a company in middle east who has =
Spectrum-DMR-104-1
> available right now, any body has experience about that? Is it really
> 300Mbps radio?
> Thanks
>=20
> --=20
> Regards,
> Shahab Vahabzadeh, Network Engineer and System Administrator
>=20
> Cell Phone: +1 (415) 871 0742
> PGP Key Fingerprint =3D 8E34 B335 D702 0CA7 5A81 C2EE 76A2 46C2 5367 =
BF90
