Did you try new adapter plates or do you keep reusing the same pair? Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373
On Sat, Mar 7, 2020 at 11:18 AM Ken Hohhof <af...@kwisp.com> wrote: > Yes, I believe the P/N is N110082L126A (for 11 GHz). > > > > In the case of a Radiowaves or Commscope/Andrew antenna it might be > possible to get a conversion kit to replace the adapter plate and feedtube, > but this was an actual Trango brand antenna. Plus the adapter just goes > between the ODU/OMT and the dish, similar to Mark’s photos. > > > > > > *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *Jon Langeler > *Sent:* Saturday, March 7, 2020 7:38 AM > *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> > *Subject:* Re: [AFMUG] PTP Microwave antenna question > > > > Was there a special adapter required for the 820c on the trango antenna? > > Jon Langeler > > Michwave Technologies, Inc. > > > > > > On Mar 6, 2020, at 12:19 PM, Ken Hohhof <af...@kwisp.com> wrote: > > > > We put 11 GHz 820C w/XPIC on existing Trango 3 ft dishes replacing single > pol ApexPlus ODUs and everything went as expected. I’d have to look up the > details but I think it worked because Trango used Remec circular even with > single pol except for 6 GHz. We should have adjusted for best XPIC > cancellation but instead we just made sure the ODUs were plumb. But I > think what we did was roughly the same as what you’re doing, so it should > work. > > > > We got a couple bad 820S radios last year, failed the RF loopback test, > but it sounds like you have pretty thoroughly verified it’s not bad radios. > > > > Were the Dragonwaves single or dual pol? > > > > > > *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *Mark Radabaugh > *Sent:* Friday, March 6, 2020 9:37 AM > *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> > *Subject:* [AFMUG] PTP Microwave antenna question > > > > > > We have installed a lot of Cambium 820C radios without much trouble. Yes, > the configuration takes some getting used to but we probably have 46 links > working and installed, so it’s not like it’s our first rodeo configuring > these things. > > > > And then we tried something new - reusing a 4’ Andrew Dragonwave antenna > in a XPIC configuration. We purchased the Cambium adapter plate that > clips onto the antenna radio mount and presents the 820C mount for the OMT. > Take off the dual Horizon radio OMT, add the 820C and the RF signal is > shit - in the -80’s from the mid 40’s. Reverse the process and put the > Horizon’s back on and the signal is fine. > > > > So we thought we had a bad 820C. It’s happened before. So we take two > different sets of 820C’s and test them one at a time swapping them in for > known good installed radios on working links. The 820C’s are fine. > > > > Okay… we forgot to test the OMT's when we did that. So we try the OMT’s > in the shop - and they work fine. > > > > At this point the only thing left is the antennas themselves and the > adapter plate. The adapter plate is nothing more than a hole in a > aluminum bushing with a couple of small steps to match diameter between the > OMT and the antenna waveguide. Pretty hard to screw up. > > > > We have a pair of Dragonwave antenna’s in the shop that we can mount all > of this to and try here - and we can’t get a decent signal even 20’ apart. > I’m at a loss at this point. The only part that doesn’t appear to work > is the adapter plate - and there is nothing interesting about it. > > > > How the heck can this not work: > > > > <image001.jpg> > > > > <image002.jpg> > > > > I can’t buy that the alignment of the antenna would need to be adjusted. > That makes no sense in my head. Am I wrong in that assumption? > > > > Mark > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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