[mythtv] seperating backend/frontend

Matthew S. Hallacy poptix at techmonkeys.org
Wed Jan 15 08:21:46 EST 2003


On Wed, Jan 15, 2003 at 07:51:57AM +0100, Henk Poley wrote:

> btw, MJPEG needs way more speed. And nay, current 54 mbit WiFi only bridges
> gaps up to 2 meters or so :-(
> 

Completely untrue, the D-Link DI-624 (only thing readily available at
places such as Best Buy) have an indoor rating of 100 meters, which
is (surprisingly) a conservative estimate. Outdoors the rating is 400 
meters.  Of course, it all depends on the output power of your access
point, and the antenna connected to it (and the client).

The 802.11g draft is close enough to the final version that a firmware
upgrade will make them 802.11g 'certified' when it's finalized.



> Plus current 802.11g (54mbit) AP/cards are working with a preleminary
> version of the specs. It's at least advisable to wait untill 802.11a (also
> 54mbit), since that one will (probably) be compatible again with 802.11b
> (current 11mbit), they'll use same band.

Wrong, 802.11a uses the 5.2Ghz band, 802.11g uses the 2.4Ghz band, it's 
the one that will be backwards compatible with 802.11b devices (and
802.11 DSSS devices). 

FYI, All of the 802.11g devices currently on the market support 802.11b
and 802.11 DSSS devices. 802.11a is expensive, and fairly useless due
to the higher frequency (I've worked on a 45mbit wireless link using
5.2Ghz, with *4 foot* dishes on both ends, using the maximum allowed
EIRP, we were able to get a signal almost 2 miles away (250ft in the air).

With 2.4ghz (802.11b) we had many 20+ mile links that worked fine (at 11mbit).

> 
> 	Henk Poley <><


-- 
Matthew S. Hallacy                            FUBAR, LART, BOFH Certified
http://www.poptix.net                           GPG public key 0x01938203


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