I found a spreadsheet online that let you calculate the slots and positions, and designed my own radiating element.
Never had the money to do that kind of testing, but our seat of the pants "best guess" is about 18-19 db. I redid the radiating element a few times, finding it was poorly tuned when moving up or down the frequency range tended to kill the gain (rssi). My most distant client has been in excess of 29 miles. currently ,ti's about 26 or so now. ++++++++++++++++++++++++++++++ Neofast, Inc, Making internet easy 541-969-8200 509-386-4589 ++++++++++++++++++++++++++++++ -------------------------------------------------- From: <cc...@dot11net.com> Sent: Sunday, June 13, 2010 11:51 AM To: "WISPA General List" <wireless@wispa.org> Subject: Re: [WISPA] Is this a record of some kind? > 6 degrees on the vertical. Slotted waveguides are phenomenal performers. > This isn't your average t-line patch. We had it tested on the Antenna > Products range in Mineral Wells, TX. The patterns were measured in both > the E and H planes and we tested several units to verify. They even have > some nice electrical downtilt built in. > > Cameron > > >> 18.5 dB of gain? And 105 * of horizontal coverage? >> >> That thing has got to be what, 1* or less of vertical coverage? 2* at >> best? >> >> Here's one for you guys to. I didn't take a pic but it was made >> completely >> out of pvc pipe. Even labeled as such. >> >> Had a cap on the top, pipe for the omni tube, and a cap with a hole >> drilled >> for a bulkhead connector on the bottom. NO weep hole anywhere. >> >> Sealed with only black tape. >> >> So much water had gotten into the system that 50' down, at the amp, there >> was rust on the connector INSIDE the outdoor box that was used. >> >> No that wasn't my installation, I was pulling out someone else's that >> never >> did work right :-) >> >> marlon >> >> ----- Original Message ----- >> From: "Cameron Crum" <cc...@wispmon.com> >> To: "WISPA General List" <wireless@wispa.org> >> Sent: Monday, June 14, 2010 9:14 AM >> Subject: Re: [WISPA] Is this a record of some kind? >> >> >>> Here is one that we made for 2.4....not MDK's but we used ours for >>> 7years. >>> Ours is 18.5 dBi (range tested by the way) about 105 degree beamwidth. >>> This >>> one is V pol. We did a design for H pol, but the specs were very similar >>> to >>> those old Hpol guides from PAC so we just ened up using those where we >>> neede >>> H-pol. I do however have Hpol 5 GHz (about 17 dBi, 95 degree BW) and >>> Hpol >>> 5 >>> GHz Omni's (about 10 dBi) as well. We don't really sell them, but I have >>> a >>> couple laying around that I could part with if someone really wanted >>> some. >>> I >>> don't have any of the omni's as those we're a one time build and we >>> didn't >>> do many, but could get some cut if someone REALLY wanted some. I've >>> attached >>> the PDF and some pics from on top of a tower since the images in the PDF >>> aren't great. On the tower pic, the 2.4 is on the left and the 5 gig is >>> on >>> the right. Pic is from behind so it's hard to see much, but these both >>> have >>> the protective covers on them anyway, so not a whole lot to see on the >>> fronts. >>> >>> Cameron >>> >>> On Sat, Jun 12, 2010 at 1:59 PM, Chuck Profito >>> <cprof...@cv-access.com>wrote: >>> >>>> I stand corrected, dumbfounded and humbled. >>>> >>>> BTW how about a photo and spec on that " our own design and >>>> manufacture >>>> slotted waveguide sector" >>>> >>>> >>>> Chuck Profito >>>> 209-988-7388 >>>> CV-Access, Inc. >>>> www.cv-access.com / cprofito'at'cv-access.com >>>> Providing Broadband Internet Access to >>>> California's Rural Central Valley >>>> >>>> >>>> >>>> -----Original Message----- >>>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >>>> Behalf Of MDK >>>> Sent: Saturday, June 12, 2010 10:51 AM >>>> To: WISPA General List >>>> Subject: Re: [WISPA] Is this a record of some kind? >>>> >>>> NOT. All my access points are star-os based, and I use NO amps >>>> anywhere, >>>> and with the exception of one long point to point link, no high power >>>> cards, >>>> >>>> either. ( that link is now out of production, replaced by ubnt >>>> rocketm5 >>>> and solid dishes. ) >>>> >>>> netbook end, is whatever atheros based card it comes with, the access >>>> point >>>> is a WLM54SAG, not the high power version, and set at default output, >>>> connected to our own design and manufacture slotted waveguide sector. >>>> >>>> For many years, it was a CM9 at the AP, but last year it started >>>> behaving >>>> strange, and it got replaced. >>>> >>>> >>>> ++++++++++++++++++++++++++++++ >>>> Neofast, Inc, Making internet easy >>>> 541-969-8200 509-386-4589 >>>> ++++++++++++++++++++++++++++++ >>>> >>>> -------------------------------------------------- >>>> From: "Chuck Profito" <cprof...@cv-access.com> >>>> Sent: Friday, June 11, 2010 11:03 PM >>>> To: "'WISPA General List'" <wireless@wispa.org> >>>> Subject: Re: [WISPA] Is this a record of some kind? >>>> >>>> > probably a ruckus on the other end >>>> > >>>> > -----Original Message----- >>>> > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] >>>> On >>>> > Behalf Of MDK >>>> > Sent: Friday, June 11, 2010 10:16 PM >>>> > To: WISPA General List >>>> > Subject: [WISPA] Is this a record of some kind? >>>> > >>>> > This evening I was at one of my access points... one that has several >>>> > backhauls and various 2.4 and 5 ghz ap's at it. >>>> > >>>> > After I was done with my few minutes of doing things, I wanted to >>>> make >>>> > sure >>>> > I had not physically disconnected or accidentally unhooked anything >>>> > (messing >>>> > >>>> > with the batteries, checking water levels, etc). I pulled out a >>>> > netbook. >>>> > Acer Aspire One to be precise, running windows xp, using the normal >>>> > wifi >>>> > card it came with. I fired it up (it is set to "any" so it simply >>>> > associates to the access points that are open at home, work, etc), >>>> and >>>> > after >>>> > >>>> > I was done, noted it said it was connected, at which point I opened >>>> google >>>> > on the browser to confirm connectivity. Google popped up, meaning >>>> things >>>> > were connected, and then I decided to run a speed test. I got about >>>> > 30KB/s >>>> > >>>> > speed, which is like painfully slow. I was standing outside, with >>>> the >>>> > netbook sitting on the hood of my truck. >>>> > >>>> > So, I decided to see what it was associated to, and it was another >>>> > access >>>> > point ... 11 MILES AWAY! I confirmed it by the SSID and by the ip >>>> > dhcp >>>> > had assigned, as belonging to the ap 11 miles distant. >>>> > >>>> > It has no external antenna, just the one the factory built into the >>>> > netbook. >>>> > >>>> > I have detected, using netstumbler and the internal antenna on my >>>> > laptop >>>> > (dell C610 and CM9 installed) access points over 24 miles away >>>> before, >>>> but >>>> > this is the longest, by far, I have been able to get a real >>>> connection, >>>> > dhcp >>>> > >>>> > assignment, and transfer data. >>>> > >>>> > >>>> > >>>> > >>>> > ++++++++++++++++++++++++++++++ >>>> > Neofast, Inc, Making internet easy >>>> > 541-969-8200 509-386-4589 >>>> > ++++++++++++++++++++++++++++++ >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> >>>> ---------------------------------------------------------------------------- >>>> > ---- >>>> > WISPA Wants You! 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