Nice. I had to rent time on a range out in Mineral Wells at Antenna Products. It was like $100/hr back then. Still a lot cheaper than building one though especially for testing 4 or 5 antennas.
On Wed, Jan 4, 2017 at 12:08 PM, Chuck McCown <ch...@wbmfg.com> wrote: > And everything was on elevated 100% dielectric towers. > > If I was going to do it again, I would no a nearfield range inside an > anechoic chamber. > That is how all the big boys roll these days. > > *From:* Chuck McCown > *Sent:* Wednesday, January 04, 2017 11:03 AM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Infinite Electronics Acquires KP Performance > Antennas > > Yes computer controlled turn table with all the official stack of HP test > gear. > > *From:* Cameron Crum > *Sent:* Wednesday, January 04, 2017 10:56 AM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Infinite Electronics Acquires KP Performance > Antennas > > Did you have a turn table and the whole works or did you just do it > manually? > > > On Wed, Jan 4, 2017 at 11:51 AM, Chuck McCown <ch...@wbmfg.com> wrote: > >> I have no idea if Lanbowan actually does field testing. I would think >> you have to do some because there are always reality issues that pop up >> when using a simulation. But as far as exhaustive testing or third party >> testing, I have no idea. I had my own far field test range and I used IEEE >> testing methodology. So I knew that my performance in the field would be >> better than my published specs. >> >> My guess is that KP will just get absorbed in to the L-COM product list. >> More importantly, L-COM absorbed the customer list. >> >> *From:* Ken Hohhof >> *Sent:* Wednesday, January 04, 2017 10:06 AM >> *To:* af@afmug.com >> *Subject:* Re: [AFMUG] Infinite Electronics Acquires KP Performance >> Antennas >> >> >> I won’t ask if they will sell your design to someone else for money. >> >> >> >> But I will ask about testing. Do they qualify the antennas with lab and >> open field testing, or is that your responsibility to do yourself or send >> out to an independent lab? >> >> >> >> ----------------------------------------------------- >> >> >> >> I know you can test antennas yourself, and the KP guys talked about doing >> a lot of testing which I think they sent out. But I see a lot of spec >> sheets that seem like they came right off a simulation program, often >> without qualifying if the numbers and plots are typical or guaranteed >> performance. But then I also see elevation/azimuth plots that are so ugly >> they must be real because no marketing guy would make them up. (I think >> there’s one Ubiquiti omni that struck me that way.) >> >> >> >> A lot of antenna vendors, I think we take their amazing gain numbers with >> a grain of salt, subtracting a fudge factor for marketing exuberance. And >> without patterns and frequency plots, just a gain number isn’t that useful. >> >> >> >> Looking at published elevation/azimuth plots for dual pol omnis, the >> gains are often different for the two polarizations. And with the 5 GHz >> wideband antennas, there may be a sweet spot at some frequency, and in any >> case the gain usually drops off several dB in the lower sub-bands. >> >> >> >> I also remember the KP guys went through what they called Gen I, II and >> III versions, influenced a lot by their interactions with Cambium. I think >> the Cambium guys informed them that gain wasn’t everything in a sector >> antenna, you also needed a certain F/B ratio and sidelobe suppression. >> >> >> >> There’s also the issues of null fill and downtilt. Electrical downtilt >> is especially relevant in an omni, since you can’t really do mechanical >> downtilt if you want it to be an omni. >> >> >> >> Bottom line, a lot of buyers look only at two numbers: price, and gain. >> >> >> >> >> >> *From:* Af [mailto:af-boun...@afmug.com] *On Behalf Of *Chuck McCown >> *Sent:* Wednesday, January 4, 2017 10:44 AM >> *To:* af@afmug.com >> *Subject:* Re: [AFMUG] Infinite Electronics Acquires KP Performance >> Antennas >> >> >> >> Yes, Lanbowan will sell to anyone with money. They will custom build or >> alter anything for money. Easy company to work with. >> >> >> >> *From:* Mathew Howard >> >> *Sent:* Wednesday, January 04, 2017 9:08 AM >> >> *To:* af >> >> *Subject:* Re: [AFMUG] Infinite Electronics Acquires KP Performance >> Antennas >> >> >> >> I think all (or at least most) of the KP sectors are pretty heavily >> customized, as I haven't seen anyone else selling the equivalents, but I >> suspect that they are all manufactured by Lanbowan... whether or not the >> internals are any different than what Lanbowan will sell to anyone else, I >> don't know. >> >> The dual polarity 5ghz omnis they sell are certainly the same thing as >> Chuck's (there are probably at least half a dozen different companies >> selling those in the US... including L-Com, interestingly). >> >> >> >> On Wed, Jan 4, 2017 at 9:07 AM, Colin Stanners <cstann...@gmail.com> >> wrote: >> >> From my bit of research I believe that KP dual-frequency "combo" sectors >> are their own design / build, although I've never asked them. >> >> >> >> On Wed, Jan 4, 2017 at 8:48 AM, Chuck McCown <ch...@wbmfg.com> wrote: >> >> Most of KP stuff came from Lanbowan. Same place I got my customized omni >> antennas. >> >> L-Com does similar, just import from China. >> >> So just adding Lanbowan to L-Com is not much of a change it doesn’t seem >> to me. >> >> >> >> I don’t think either company actually built anything themselves. >> >> >> >> *From:* That One Guy /sarcasm >> >> *Sent:* Tuesday, January 03, 2017 5:42 PM >> >> *To:* af@afmug.com >> >> *Subject:* Re: [AFMUG] Infinite Electronics Acquires KP Performance >> Antennas >> >> >> >> L-Com/KP presents some interesting potential >> >> >> >> On Tue, Jan 3, 2017 at 5:11 PM, Chuck McCown <ch...@wbmfg.com> wrote: >> >> Must be these guys: >> >> http://www.infiniteelectronics.com/ >> >> >> >> *From:* Timothy Steele >> >> *Sent:* Tuesday, January 03, 2017 4:03 PM >> >> *To:* af@afmug.com >> >> *Subject:* [AFMUG] Infinite Electronics Acquires KP Performance Antennas >> >> >> >> http://www.antennasonline.com/main/news/infinite-electronics >> -acquires-kp-performance-antennas/ >> >> >> >> >> >> -- >> >> If you only see yourself as part of the team but you don't see your team >> as part of yourself you have already failed as part of the team. >> >> >> >> >> > >
