For some reason it doesn't actually use the "I'm Feeling Lucky" button =/
The first link reads:
The 18 byte ("long preamble") preamble is used to signal "here is a train of
data coming" to the receiver. The 802.11b standard gives an option of
reducing the size of the PLCP preamble to 9 bytes *("short preamble"), this
significantly increases the throughput performance at higher data rates*.
One downside to the PLCP is that the PLCP preamble and header is always
transmitted at 1Mbps, regardless of the transmission rate for the rest of
the data. This means that the transfer time is constant at 192 Usec
(microseconds) for the PLCP with long preamble. The short preamble version
does a little better, transmitting the shorter preamble at 1Mbps and the
header at 2Mbps, shortening the transmit time to 96 Usec.
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
"When you have eliminated the impossible, that which remains, however
improbable, must be the truth."
--- Sir Arthur Conan Doyle
On Thu, Jun 18, 2009 at 10:15 AM, Chris Gotstein <ch...@uplogon.com> wrote:
> Ouch, that wasn't so nice!
>
> Yes, i do know how to use google, but was hoping someone would just give me
> a quick explanation, as in real world experience.
>
> Chris Gotstein
> Sr Network Engineer
> UP Logon/Computer Connection UP
> 500 N Stephenson Ave
> Iron Mountain, MI 49801
> Phone: 906-774-4847
> Fax: 906-774-0335
> ch...@uplogon.com
>
> Josh Luthman wrote:
>
>> http://tinyurl.com/lf75qw
>>
>> Josh Luthman
>> Office: 937-552-2340
>> Direct: 937-552-2343
>> 1100 Wayne St
>> Suite 1337
>> Troy, OH 45373
>>
>> "When you have eliminated the impossible, that which remains, however
>> improbable, must be the truth."
>> --- Sir Arthur Conan Doyle
>>
>>
>> On Thu, Jun 18, 2009 at 10:06 AM, Chris Gotstein <ch...@uplogon.com>
>> wrote:
>>
>> What is the difference between short and long preamble?
>>>
>>> Chris Gotstein
>>> Sr Network Engineer
>>> UP Logon/Computer Connection UP
>>> 500 N Stephenson Ave
>>> Iron Mountain, MI 49801
>>> Phone: 906-774-4847
>>> Fax: 906-774-0335
>>> ch...@uplogon.com
>>>
>>>
>>> Steve Barnes wrote:
>>>
>>> Thanks a bunch. That means those are ones that my installers didn't
>>>> setup
>>>> right GREAT.
>>>>
>>>> Steve Barnes
>>>> Manager
>>>> PCS-WIN
>>>> RC-WiFi Wireless Internet Service
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: mikrotik-boun...@mail.butchevans.com
>>>> [mailto:mikrotik-boun...@mail.butchevans.com] On Behalf Of Robert
>>>> Andrews
>>>> Sent: Thursday, June 18, 2009 9:22 AM
>>>> To: Mikrotik discussions
>>>> Subject: Re: [Mikrotik] Tx/Rx Rate
>>>>
>>>> Short Preamble
>>>>
>>>> Steve Barnes wrote:
>>>>
>>>> I have updated several of my towers to 3.24 and started noticing on the
>>>>> Registration Tab in the Tx/Rx Rate column I have a most that say
>>>>> 11Mbps/11Mbps. But I have a few that will say 11Mbps-SP/11Mbps-SP.
>>>>> What
>>>>> does the SP signify?
>>>>>
>>>>> Steve Barnes
>>>>> RC-WiFi
>>>>>
>>>>> _______________________________________________
>>>>> Mikrotik mailing list
>>>>> Mikrotik@mail.butchevans.com
>>>>> http://www.butchevans.com/mailman/listinfo/mikrotik
>>>>>
>>>>> Visit http://blog.butchevans.com/ for tutorials related to Mikrotik
>>>>>
>>>>> RouterOS
>>>>
>>>>
>>>>>
>>>>> _______________________________________________
>>>> Mikrotik mailing list
>>>> Mikrotik@mail.butchevans.com
>>>> http://www.butchevans.com/mailman/listinfo/mikrotik
>>>>
>>>> Visit http://blog.butchevans.com/ for tutorials related to Mikrotik
>>>> RouterOS
>>>>
>>>> _______________________________________________
>>>> Mikrotik mailing list
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>>>>
>>>> Visit http://blog.butchevans.com/ for tutorials related to Mikrotik
>>>> RouterOS
>>>>
>>>> _______________________________________________
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>>>
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> _______________________________________________
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