That's good. Do you have a url or two?

Blair Davis wrote:
> And those are available already.  the CATV industry has had them, in 
> 75ohm, for a long time.
>
> One thing I really hope for this gear is that the vendors decide to 
> make 75ohm gear.  There is a HUGE amount of stuff already out there 
> that we can use if they do.
>
> Jack Unger wrote:
>> That's a very good idea on the transmit side. Remember that our AP 
>> receivers will also need a VERY sharp filter ($$$) to keep the adjacent 
>> channel TV signal from overloading it and reducing the reception range 
>> to ****.
>>           
>> jack
>>
>>
>> Chuck McCown - 3 wrote:
>>   
>>> For adjacent channel use, we don't have to use a 6 MHz channel.  We could 
>>> use 5 or 4 or whatever it takes to make it work.
>>> ----- Original Message ----- 
>>> From: "Jack Unger" <[EMAIL PROTECTED]>
>>> To: "WISPA General List" <wireless@wispa.org>
>>> Sent: Wednesday, November 19, 2008 1:32 PM
>>> Subject: Re: [WISPA] TV Whitespaces
>>>
>>>
>>>   
>>>     
>>>> Directional antennas and other interference-avoidance techniques will
>>>> help but for mass-market use (which is how the vendors visualize the
>>>> TVWS) I suspect that it's going to be a long time before 1st adjacent
>>>> channel use will be practical. Still, gaining access to most of the
>>>> non-1st adjacent channels white space is still a big "win" for the WISP
>>>> industry.
>>>>
>>>> Chuck McCown wrote:
>>>>     
>>>>       
>>>>> Hopefully forward error correction and directional antennas will make it
>>>>> possible.
>>>>>
>>>>> ----- Original Message ----- 
>>>>> From: "Jack Unger" <[EMAIL PROTECTED]>
>>>>> To: "WISPA General List" <wireless@wispa.org>
>>>>> Sent: Wednesday, November 19, 2008 1:19 PM
>>>>> Subject: Re: [WISPA] TV Whitespaces
>>>>>
>>>>>
>>>>>
>>>>>       
>>>>>         
>>>>>> Anything's possible but look at the shape of a DTV waveform and compare
>>>>>> it to the shape of an OFDM broadband wireless signal. Now look at the
>>>>>> space between those two waveforms if they are on adjacent channels. It's
>>>>>> kind of like putting two bricks side by side with no space in between.
>>>>>> Who is going to interfere with who the most? Looks like the DTV signals
>>>>>> will interfere with our AP receivers AND our CPE transmitters will
>>>>>> interfere with nearby television receivers. Of course, I could be
>>>>>> wrong.... What's your take on it?
>>>>>>
>>>>>> Chuck McCown wrote:
>>>>>>
>>>>>>         
>>>>>>           
>>>>>>> Perhaps once TVWS gets used and it proves a success, then they will 
>>>>>>> open
>>>>>>> up
>>>>>>> adjacent channels.
>>>>>>> Once they do that there will be holes everywhere.
>>>>>>>
>>>>>>> ----- Original Message ----- 
>>>>>>> From: "Jack Unger" <[EMAIL PROTECTED]>
>>>>>>> To: "WISPA General List" <wireless@wispa.org>
>>>>>>> Sent: Wednesday, November 19, 2008 12:58 PM
>>>>>>> Subject: Re: [WISPA] TV Whitespaces
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>           
>>>>>>>             
>>>>>>>> Joe,
>>>>>>>>
>>>>>>>> The White Spaces are the unused television channels. In most major 
>>>>>>>> metro
>>>>>>>> areas, many of the channels are in use by television broadcasters and
>>>>>>>> other licensed users. Outside of major metro areas, there will be 
>>>>>>>> unused
>>>>>>>> channels available that you can use. In general, the more rural you 
>>>>>>>> are,
>>>>>>>> the more channels will be available.
>>>>>>>>
>>>>>>>> jack
>>>>>>>>
>>>>>>>>
>>>>>>>> Joe Laura wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>             
>>>>>>>>               
>>>>>>>>> Am I hearing correctly that this new space can only be utilized in
>>>>>>>>> rural
>>>>>>>>> areas? Not for Citys like New Orleans? TIA
>>>>>>>>> Joe Laura
>>>>>>>>> Superior Alarm/Wireless
>>>>>>>>> New Orleans,La.
>>>>>>>>> www.superior1.com
>>>>>>>>>   ----- Original Message ----- 
>>>>>>>>>   From: Blair Davis
>>>>>>>>>   To: WISPA General List
>>>>>>>>>   Sent: Monday, November 17, 2008 5:47 PM
>>>>>>>>>   Subject: Re: [WISPA] TV Whitespaces
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>   Ubquity?  Some kind of mini-pci card?
>>>>>>>>>
>>>>>>>>>   Charles Wyble wrote:
>>>>>>>>> Mike Hammett wrote:
>>>>>>>>>   Now that TV whitespaces have been approved for our use, let's hear
>>>>>>>>> from
>>>>>>>>> the vendors.  When, how much, and what will you do with it?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Indeed!
>>>>>>>>>
>>>>>>>>> Who would the likely vendors in this space be?
>>>>>>>>>
>>>>>>>>> Should we put an RFP together and send it around?  I sure want 
>>>>>>>>> answers
>>>>>>>>> to your questions as well.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>   Ladies and gents:  I haven't read all of the published information
>>>>>>>>> yet,
>>>>>>>>> but this is the second greatest battle we have come across (second 
>>>>>>>>> only
>>>>>>>>> to having unlicensed available in the first place) and we have won!
>>>>>>>>> Congrats.  It appears the portable devices are held to 100 mw of 
>>>>>>>>> power,
>>>>>>>>> while we have 4 watts (which is pretty much what we have everywhere
>>>>>>>>> else).  Four watts at these frequencies will carry!
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Yep!
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
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>>>>>>>>>               
>>>>>>>>>                 
>>>>>>>> -- 
>>>>>>>> Jack Unger - President, Ask-Wi.Com, Inc.
>>>>>>>> Serving the Broadband Wireless Industry Since 1993
>>>>>>>> Cisco Press Author - "Deploying License-Free Wireless WANs"
>>>>>>>> WISPs - Do you know where your customers are?
>>>>>>>> For wireless coverage mapping see http://www.ask-wi.com/mapping
>>>>>>>> FCC Lic. #PG-12-25133 LinkedIn Profile
>>>>>>>> <http://www.linkedin.com/in/jackunger>
>>>>>>>> Phone 818-227-4220  Email <[EMAIL PROTECTED]>
>>>>>>>>
>>>>>>>>
>>>>>>>>
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>>>>>>>           
>>>>>>>             
>>>>>> -- 
>>>>>> Jack Unger - President, Ask-Wi.Com, Inc.
>>>>>> Serving the Broadband Wireless Industry Since 1993
>>>>>> Cisco Press Author - "Deploying License-Free Wireless WANs"
>>>>>> WISPs - Do you know where your customers are?
>>>>>> For wireless coverage mapping see http://www.ask-wi.com/mapping
>>>>>> FCC Lic. #PG-12-25133 LinkedIn Profile
>>>>>> <http://www.linkedin.com/in/jackunger>
>>>>>> Phone 818-227-4220  Email <[EMAIL PROTECTED]>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
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>>>>>>         
>>>>>>           
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>>>>>       
>>>>>         
>>>> -- 
>>>> Jack Unger - President, Ask-Wi.Com, Inc.
>>>> Serving the Broadband Wireless Industry Since 1993
>>>> Cisco Press Author - "Deploying License-Free Wireless WANs"
>>>> WISPs - Do you know where your customers are?
>>>> For wireless coverage mapping see http://www.ask-wi.com/mapping
>>>> FCC Lic. #PG-12-25133 LinkedIn Profile 
>>>> <http://www.linkedin.com/in/jackunger>
>>>> Phone 818-227-4220  Email <[EMAIL PROTECTED]>
>>>>
>>>>
>>>>
>>>>
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>>   
>
> ------------------------------------------------------------------------
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>
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-- 
Jack Unger - President, Ask-Wi.Com, Inc.
Serving the Broadband Wireless Industry Since 1993
Cisco Press Author - "Deploying License-Free Wireless WANs"
WISPs - Do you know where your customers are?
For wireless coverage mapping see http://www.ask-wi.com/mapping
FCC Lic. #PG-12-25133 LinkedIn Profile <http://www.linkedin.com/in/jackunger>
Phone 818-227-4220  Email <[EMAIL PROTECTED]>





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