RE: [Karlnet] Bandpass filters

["Travis Brown" <travis@netwaveva.com>]

Yes.

 

The filter can be set to, for instance, 2.427GHz (channel 4) with a 22 MHz bandwidth (+/- 11 MHz from the center frequency), which is the optimum bandwidth for an 802.11b channel. All radio signals above or below that bandwidth will be filtered out before they hit the radio.

 

Looks like about $325 for one unit. We'll see... gonna order one if no one offers any advice against it. :-)

 

Travis

-----Original Message-----
From: karlnet-admin@WISPNotes.com [mailto:karlnet-admin@WISPNotes.com] On Behalf Of Melvin C. Etheridge
Sent: Thursday, June 27, 2002 4:41 PM
To: karlnet@WISPNotes.com
Subject: Re: [Karlnet] Bandpass filters

So could you use this to filter all but just one freq set in the 2.4 ISM band?  Say channel 1 or 6 or 11?

 

Mel

----- Original Message -----

From: Travis Brown

To: karlnet@WISPNotes.com

Sent: Thursday, June 27, 2002 3:09 PM

Subject: RE: [Karlnet] Bandpass filters

Mel,

 

One typical customer off this base as a s/n of -64dbm/-79dbm.

 

On our "quiet" bases, we see customers at similar distances and CPE setups having something like -58dbm/-95dbm. Clean, quiet, and FAST. :-)

 

I'm looking at a company now that has a 2.4GHz wide bandpass filter that they adjust to a specific center freq with a 22-25 MHz notch -- I'm gonna stick with the 22 MHz bandwidth simply because of the nastiness of the noise we see.

 

Travis

-----Original Message-----
From: karlnet-admin@WISPNotes.com [mailto:karlnet-admin@WISPNotes.com] On Behalf Of Melvin C. Etheridge
Sent: Thursday, June 27, 2002 2:42 PM
To: karlnet@WISPNotes.com
Subject: Re: [Karlnet] Bandpass filters

Travis,

 

What are your noise levels in dbm?

 

Mel

----- Original Message -----

From: Charles Chia Sheng Wu

To: karlnet@WISPNotes.com

Sent: Thursday, June 27, 2002 2:34 PM

Subject: RE: [Karlnet] Bandpass filters

it all depends on notch size - there's a company in Ohio that makes a nice amp w/ a 22 MHz notch - think they're called Rflinx or something

 

-Charles

-----Original Message-----
From: karlnet-admin@WISPNotes.com [mailto:karlnet-admin@WISPNotes.com]On Behalf Of Travis Brown
Sent: Thursday, June 27, 2002 8:41 AM
To: karlnet@WISPNotes.com
Subject: [Karlnet] Bandpass filters

Anyone using bandpass filters on your base gear due to dirty tower sites and such? We have a base (AP-1000) that shows very high noise at the tower site, and I'm hoping a very narrow bandpass filter will help…

Any thoughts? I would appreciate some feedback from those of you that have experience with these filters.

Thanks!

Travis
--
==============================
  M. Travis Brown, MCSE
  Network Systems Engineer
  NetWave Internet
  434.386.0656
  travis@netwaveva.com
  http://www.netwaveinternet.com
==============================