We use them commercially. I think we have replace. 2 of them over the past 18+ 
years
Sent from my Verizon Wireless BlackBerry

-----Original Message-----
From: Israel Lopez-LISTS <ilopezli...@sandboxitsolutions.com>

Date: Thu, 18 Jun 2009 09:23:20 
To: WISPA General List<wireless@wispa.org>
Subject: Re: [WISPA] Radio Seperation


Whats your life expectancy on those polyphasers?  Their website states 
they are good for multiple strikes, but just wondering about the 
durability. etc,.

-Israel

David Hulsebus wrote:
> Same here, Polyphasers. No more gas tubes. I hate getting a call that I 
> have to climb a water tank because a storm knocked out a gas cartridge.
>
>
>
> Kurt Fankhauser wrote:
>   
>> That’s why I quit buying lightning arrestors with "gas tubes" in them. Too
>> much worrying if the gas tube was blown or not, so I started buying
>> polyphaser's and never looked back....
>>
>> Kurt Fankhauser
>> WAVELINC
>> P.O. Box 126
>> Bucyrus, OH 44820
>> 419-562-6405
>> www.wavelinc.com
>>  
>>  
>> -----Original Message-----
>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
>> Behalf Of David Hulsebus
>> Sent: Thursday, June 18, 2009 11:45 AM
>> To: WISPA General List
>> Subject: Re: [WISPA] Radio Seperation
>>
>> I've had the quarter waves that take multiple strikes go partially out 
>> in the past. Gas tubes have just blown.
>>
>> Dave
>>
>> RickG wrote:
>>   
>>     
>>> On that note. Can lightning protectors go partially bad or are they like a
>>> fuse and either work or not?
>>> -RickG
>>>
>>> On Thu, Jun 18, 2009 at 12:50 AM, Marlon K. Schafer
>>>     
>>>       
>> <o...@odessaoffice.com>wrote:
>>   
>>     
>>>   
>>>     
>>>       
>>>> Even so, the performance should be the same both ways, not tx vs. rx.
>>>>
>>>> I still think he needs to look at the lightning arrestors.  Not sure how
>>>> they could make a difference but that's the one thing that's unknown to
>>>>       
>>>>         
>> me.
>>   
>>     
>>>> marlon
>>>>
>>>>  ----- Original Message -----
>>>>  From: Travis Johnson
>>>>  To: WISPA General List
>>>>  Sent: Monday, June 15, 2009 12:05 PM
>>>>  Subject: Re: [WISPA] Radio Seperation
>>>>
>>>>
>>>>  Hi,
>>>>
>>>>  I have to agree with Gino here... even at 7 degree downtilt, you are
>>>> cutting it very close. You may want to try 5 degrees on just one sector
>>>>       
>>>>         
>> and
>>   
>>     
>>>> see if that helps.
>>>>
>>>>  Travis
>>>>
>>>>
>>>>  Michael Baird wrote:
>>>> Gino, wisp-router.com, would the downtilt affect the AP RSSI level?
>>>>
>>>> Antenna Height
>>>>        ft
>>>> Downtilt Angle
>>>>        °
>>>> Vertical Beamwidth
>>>>        °
>>>> Results
>>>> Inner -3dB Radius       0.1     Miles
>>>> Sweet spot      0.2     Miles
>>>> Outer -3dB Radius       5.24    Miles
>>>>
>>>>
>>>> I told him 7.8, but I'm sure he didn't get dead on, just the best he
>>>> could with his inclinometer.
>>>>
>>>> Regards
>>>> Michael Baird
>>>>  Where are you running the calcs? I use
>>>> http://www.wirelessconnections.net/calcs/AntDowntiltCalc.as
>>>>
>>>> With your input, I get main lobe 0.2 miles / -3db @ 7
>>>>
>>>> Gino A. Villarini
>>>> g...@aeronetpr.com
>>>> Aeronet Wireless Broadband Corp.
>>>> tel  787.273.4143   fax   787.273.4145
>>>>
>>>> -----Original Message-----
>>>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
>>>> Behalf Of Michael Baird
>>>> Sent: Monday, June 15, 2009 1:51 PM
>>>> To: WISPA General List
>>>> Subject: Re: [WISPA] Radio Seperation
>>>>
>>>> Gino,
>>>>
>>>> 145', 15 degree VB, 7.7/7.8 puts my -3d at ~5 miles. If my downtilt was
>>>> wrong, I would think it would impact the receive on my CPE's, much more
>>>> then on the tower AP's, maybe that's a poor assumption on my part
>>>> though.
>>>>
>>>> Regards
>>>> Michael Baird
>>>>
>>>>    I think your downtilt is too much, whats your area and tower height?
>>>> The beamwidth of the maxrad sector?
>>>>
>>>>
>>>> Gino A. Villarini
>>>> g...@aeronetpr.com
>>>> Aeronet Wireless Broadband Corp.
>>>> tel  787.273.4143   fax   787.273.4145
>>>>
>>>> -----Original Message-----
>>>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org]
>>>> On Behalf Of Michael Baird
>>>> Sent: Monday, June 15, 2009 1:29 PM
>>>> To: WISPA General List
>>>> Subject: Re: [WISPA] Radio Seperation
>>>>
>>>> My sector's are Maxrad adjustable sector's horizontally polarized,
>>>> adjusted to 120/13db, at 7.7 - 7.8 downtilt, trying to cover a 5 mile
>>>> radius.
>>>> Radios, are Ubiquity 400mw radio's, I've turned down to 23/200mw.
>>>> CPE's, are Ubiquity PS2, same radio at 400mw, Horizontal antenna at 18
>>>>
>>>>
>>>>    dbi.
>>>>
>>>> RSSI at the CPE is great, RSSI at the AP is poor often different by
>>>> 16-20 db.
>>>>
>>>> I also mentioned the RFLinx Qwave lightning arrestors, this is the
>>>> first tower we've used them on.
>>>>
>>>> Regards
>>>> Michael Baird
>>>>
>>>>
>>>>
>>>>      I don't think that this would be an antenna location issue.
>>>>
>>>> What antennas did you use and where are they pointed?
>>>>
>>>> Also, what output are the radios?  If you use 600mw radios on the ap
>>>> side and 100 mw radios on the rx side it'll make a difference.
>>>>
>>>> Also, having LOW power at the tx is almost always a good idea,
>>>> especially when colocated like this.  I usually only run 15 to 17dB
>>>> at
>>>>
>>>>
>>>>
>>>>
>>>>      the ap's.  Most of my sectors are 13dB.  Yeah, I have customers at
>>>>       
>>>>         
>> 18
>>   
>>     
>>>>    miles with multi meg RELIABLE service this way.  There are other
>>>> customers at much shorter ranges that don't get reliable service, but
>>>>
>>>>
>>>>        that's caused by other issues :-).
>>>>
>>>>
>>>>      We run most of our cpe at pretty high power these days due to the
>>>> need
>>>>
>>>>
>>>>
>>>>
>>>>      to blow through the overpowered competition or just over all noise
>>>>
>>>>
>>>>        levels.
>>>>
>>>>
>>>>      Anyway, what gain are the antennas and where are they pointed?  How
>>>> much downtilt etc.
>>>>
>>>> How far are the customers from the tower?
>>>>
>>>> What polarity are the antennas?  All the same, or did you mix it up?
>>>>
>>>> What are the cpe radios?  What power, what antennas etc.
>>>>
>>>> If you had a 15 db transmit antenna and a 15 db transmit radio
>>>> shooting to a
>>>> 15 dB panel at 5 miles you should see an rssi of, -83 or so.  Legally
>>>>
>>>>
>>>>    you could have 6 more dB at the AP side giving you around -77 at the
>>>> cpe 5 miles out.
>>>>
>>>> Hope this helps!
>>>> marlon
>>>>
>>>> ----- Original Message -----
>>>> From: <m...@tc3net.com>
>>>> To: <wireless@wispa.org>
>>>> Sent: Saturday, June 13, 2009 1:09 PM
>>>> Subject: [WISPA] Radio Seperation
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>        We've just installed a 3 sector 2.4 setup, at 145' with maxrad
>>>>
>>>>          120's.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>      I'm noticing the receive sensitivity on the AP's are about 15-20
>>>> db's
>>>>
>>>>
>>>>
>>>>
>>>>      different then what I see on the CPE's, tried a Tranzeo/Ubiquity
>>>>
>>>>
>>>>          radio.
>>>>
>>>>
>>>>      I'm using Ubiquity AP's, and they work fine on another 3 sector
>>>> setup
>>>>
>>>>
>>>>
>>>>
>>>>      I have, however this tower is an A-Frame. The tower owner won't
>>>> allow
>>>>
>>>>
>>>>
>>>>
>>>>      outside climbers so his guy did it, and he put one on each leg at
>>>>
>>>>
>>>>          145'
>>>>
>>>>
>>>>      back to back. If the radios were too close together even on
>>>> different
>>>>
>>>>
>>>>
>>>>
>>>>      channels, would the RX performance on the AP exhibit this behavior?
>>>> Only other change on this tower was RFLinx Quarter-wave arrestors in
>>>>
>>>>
>>>>          line.
>>>>
>>>>
>>>>      If I'm 3-5 miles away I can see on the CPE a RSSI of -65 to -75 for
>>>> example, on the AP the reading would be in the -90 to not even below
>>>>
>>>>
>>>>    the noise floor.
>>>>
>>>> Any thoughts would be appreciated as always.
>>>>
>>>> Regards
>>>> Michael Baird
>>>>
>>>>
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