WRT54G Linksys default antennas replace with 7 dbi antennas

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Does replacing the 2 or so dbi antennas with 7 dbi antennas do anything? Can
I get more range?

What affect do bigger antennas on the same power transmitter do?

Will it go farther in my house and just have more throughput, given the same
distances?

Thanks.

Bryce.



Re: WRT54G Linksys default antennas replace with 7 dbi antennas


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Twice as much power is 3 dB, 4 times as much power is 6 dB.  You aren't
getting quite 4 times as much power by using a 7 dBi antenna in place of
a 2 dBi antenna.

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They will improve performance.  One big advantage of investing
in antennas is that it improves the transmit power in any given
direction, and it also improves the receive sensitivity.
(Unlike raising the power of the transmitter, which has to be
done at both ends of a link to be effective, a better antenna on
only one end of a link benefits both transmit and receive).

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Depends.  If your AP and Client are sitting 20 feet from each
other, with nothing between them, and you have a received signal
of -40 dBm, and improvement of 5 dB to -35 dBm will have *no*
effect.  In either case the link will be able to operate at its
maximum bitrate.

But if your Client is two rooms away, and the signal is -83 dBm
because it either doesn't go through the walls well or is
actually bouncing of the metal building across the road...  you
won't be getting the maximum bit rate, and increasing the
received signal level to -78 dBm will probably cause a higher
bit rate, and will certainly result in fewer dropouts and
slowdowns when things change (someone walks through your path,
for example).  And ultimately, it extends the distance at which
you can no longer get any kind of a reliable connection.

--
Floyd L. Davidson           <http://web.newsguy.com/floyd_davidson
Ukpeagvik (Barrow, Alaska)                         floyd@barrow.com

Re: WRT54G Linksys default antennas replace with 7 dbi antennas


Floyd:

What files do I need to update my WRT54G? I want to increase the transmit
power somehow. Someone told me about Sveasoft. I think I'd still be below
the point-to-point power threshhold that we need to stay below, even with
these 7dbi antennas.

I can't quite figure out on that Sveasoft site which firmware to download to
flash the router with. It says it's good for Ver. 1 and Ver. 2, but I don't
see any reference to anything being good for v3.03.1. on the WRT54G.

Thanks for any info.

Bryce.


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Re: WRT54G Linksys default antennas replace with 7 dbi antennas



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many of the third party firmwares offer power control.  perhaps the
'cleanest' is hyperwrt, which basically adds a few feautres and fixes a
few things.  it is very close to the original linksys firmware.

<http://www.hyperwrt.org/

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that refers to the hardware revision, not the currently installed
firmware.  some custom firmwares do not yet support v2.2 and 3.0
hardware (yet).

also check:

<http://www.linksysinfo.org/

Re: WRT54G Linksys default antennas replace with 7 dbi antennas


wrote:

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Sveasoft Alchemy was released before there was time to test WRT54G
v3.0 hardware.  v3.0 hardware is basically the same as v2.2 anyway.
There have also been reports on DSLReports.com and wrt54g.com that
Alchemy does work on the V3.0 hardware.  

See photos at:

http://www.linksysinfo.org/modules.php?name=Content&pa=showpage&pid=6
which states:
  "The v3.0 has no other differences from the V2.0 and V2.2 other
  than the switch that you can see to the bottom left side of the
  motherboard."

Also, don't mix the version numbers of the WRT54G and WRT54GS.  From
the Alchemy release:
  "This version supports WRT54G V1.0, V1.1, V2.0, V2.2
  and WRT54GS V1.0, V1.1 routers only."

ZZZZZZZZZZZZZZZZzzzzzzzzzzzzzzzzzzzzz..........

--
Jeff Liebermann    jeffl@comix.santa-cruz.ca.us
150 Felker St #D   http://www.LearnByDestroying.com
Santa Cruz CA 95060    AE6KS  831-336-2558


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