The radios were the 820s which is the Ceragon IP20. Sent from my iPad
> On May 18, 2019, at 2:17 PM, <[email protected]> <[email protected]> wrote: > > No idea, but I sure never had support issues with Cambium other than perhaps > a bit of an initial delay. > > From: Bill Prince > Sent: Saturday, May 18, 2019 11:44 AM > To: [email protected] > Subject: Re: [AFMUG] Cambium > > I have not read an y of the backup material, but are the "Cambium" radios > actually the re-badged Ceregon radios? > > > > bp > <part15sbs{at}gmail{dot}com> > >> On 5/18/2019 8:16 AM, Chuck McCown wrote: >> I would like to see a comparison between the Cambium and Aviat radios. The >> major complaint during the hearing was that Cambium was not providing >> support. But when they said the Aviat was magic and did what Cambium could >> not I really had some heartburn. And that was on the direct line, not the >> passive link. >> >> They wrote a pretty big check with their mouth during the hearing and they >> expect Aviat to cash it. By this time next week the magic Aviat will be >> installed on that passive path and provide magic once again... >> >> Not sure how I am going to be able to get any feedback on this. I suppose >> the lawyer that represents the customer can check with Frontier and see how >> it is going. He is a friend of mine and will most likely tell me what >> Frontier is saying. Of course they will say it is going well. I used to >> know the techs at Moab, but I am sure they are going to say it is fixed even >> if it fails miserably. >> >> The end user’s lack of dial tone will be telling. >> >> From: Ken Hohhof >> Sent: Saturday, May 18, 2019 7:05 AM >> To: 'AnimalFarm Microwave Users Group' >> Subject: Re: [AFMUG] Cambium >> >> Seems like the radio is being used as a scapegoat. If it’s an RF path >> issue, there’s only so much magic the electronics can do. Like a golfer >> blaming his clubs for his bad score. I don’t suppose they explained what >> features or specs of the Aviat radios are going to fix the problem, or do >> they even know what the problem is? >> >> >> >> If they just need a few dB more fade margin, then yes, higher xmt power or >> better rcv sensitivity or something like that could help. A little. Stuff >> like 2048QAM or 4096QAM are going to increase the throughput under ideal >> conditions and do nothing for performance under adverse conditions. And the >> thing about fading is we’re talking huge dB numbers, which is hard to >> overcome with antenna gain or system margin where just a couple dB is >> difficult and expensive. >> >> >> >> Maybe this is what the future looks like with all this government funding >> and accountability for meeting specs. If you screw up, start looking around >> for a vendor to blame, and insist they take the equipment back because it >> was bought with CAF money. >> >> >> >> Good points about the narrow beams and the use of a passive repeater. It >> wouldn’t take much atmospheric effects or tower twist to affect the RF path. >> >> >> >> It’s also hard to believe they never had fading issues on the legacy >> equipment. I remember working for a telecom equipment manufacturer in the >> 80’s and common wisdom was you couldn’t submit any new equipment for telco >> evaluation during summer or “the fading season” because it was all hands on >> deck at the telcos to keep their long haul microwave links from dropping. I >> don’t know what manual tweaking was involved, but apparently it was a big >> issue. Just try binoculars on a long microwave path on a hot day and see >> what the atmosphere does to the image of that distant tower. Now imagine >> that’s a billboard and you have to make a bank shot off it. >> >> >> >> >> >> From: AF mailto:[email protected] On Behalf Of [email protected] >> Sent: Friday, May 17, 2019 1:46 PM >> To: [email protected] >> Subject: Re: [AFMUG] Cambium >> >> >> >> A motion was just made to revoke Frontier’s certificate if they cannot >> achieve 99.99% uptime/availability with the new Aviat radio. >> >> >> >> Wow, 15’ dishes warp in the wind, towers twist. >> >> >> >> The beamwidth .35 degrees. >> >> That is like a laser beam on this thing. >> >> >> >> If anyone with Aviat is listening, they need to give this deployment some >> extra focus or tell Frontier that they may have a problem using 15’ antennas >> and a passive repeater. >> >> There are lots of people watching. >> >> >> >> They should also true up the license. >> >> >> >> From: [email protected] >> >> Sent: Friday, May 17, 2019 12:31 PM >> >> To: [email protected] >> >> Subject: Re: [AFMUG] Cambium >> >> >> >> They should run a fiber up to the passive repeater location. Only 1 km. >> >> >> >> Or put an active repeater there. But again, this is Fronter. >> >> >> >> From: dave >> >> Sent: Friday, May 17, 2019 12:27 PM >> >> To: [email protected] >> >> Subject: Re: [AFMUG] Cambium >> >> >> >> yeah thats huge! >> Why not do a spatial diversity to compensate for such a large dish for >> distance? >> I did a 71 mile shot with cambium sub 6Ghz using 4x 4' andrew dishes at each >> end with very stable shots. >> Of course real estate would be a factor. Diversity requires some spacing >> between dishes. >> I also converted an old microwave 12' dish for a tv station to spatial >> diversity and been in operation for 8yrs. >> >> >> >> <image001.jpg> >> >> On 5/17/19 1:20 PM, [email protected] wrote: >> >> 4.6 Meter antennas. 15’ Wow. 48.3 dBi >> >> >> >> From: [email protected] >> >> Sent: Friday, May 17, 2019 12:18 PM >> >> To: AnimalFarm Microwave Users Group >> >> Subject: Re: [AFMUG] Cambium >> >> >> >> Thanks >> >> Looks like Frontier did not update their license ... >> >> >> >> 11 Ghz Still shows Alcate MDR-8611-135 radio. >> >> >> >> 16 km on one side 1 km on the other side of the billboard. >> >> That seems to be the requirement for billboards, very short leg on one >> side. >> >> >> >> From: Cassidy B. Larson >> >> Sent: Friday, May 17, 2019 12:14 PM >> >> To: AnimalFarm Microwave Users Group >> >> Subject: Re: [AFMUG] Cambium >> >> >> >> Maybe this one? >> >> >> >> https://wireless2.fcc.gov/UlsApp/UlsSearch/licensePathsSum.jsp?pageNumToReturn=1&licKey=963392 >> >> >> >> Contact is Frontier.. >> >> >> >> >> >> >> >> -- >> ---- >> Cassidy B. Larson >> CTO - InfoWest, Inc. >> Voice: 435-773-6073 >> [email protected] >> ---- >> >> >> >> >> >> >> On May 17, 2019, at 12:03 PM, <[email protected]> <[email protected]> wrote: >> >> >> >> Cambium is getting torn up at a Utah Public Service Commission hearing this >> morning. >> >> >> >> Frontier installed a pair of Cambium something between Bald Mesa and Castle >> Valley Utah in December to change out a TDM radio. >> >> >> >> Bad fading on Cambium. >> >> >> >> A resort ranch filed a complaint and I am listening to he hearing this >> morning. Frontier is complaining that they got no support from Cambium. >> The radios would work for 3 or 4 days and then troubles would come again >> over and over. Frontier changed out the Cambium radio in March. >> >> >> >> They removed Cambium and said they have removed them as a vendor company >> wide. >> >> They changed to Aviat. Supposedly the new radios fixed everything. Typing >> this as I am listening to the hearing. >> >> >> >> The ranch still had some problems after changing to Aviat. Frontier says >> that the the new radios fixed everything. The new radio has not had any >> drop outs. >> >> >> >> This is a two hop system. They are changing out cambium on the second leg >> with Aviat soon. Passive repeater system on the second leg. Fog causes >> fading. Drops modulation down to low QAM levels. Frontier claims the >> second Aviat radio will make this network flawless. When asked what that >> means Frontier answered 99.99% >> >> >> >> Frontier is in process to take action against Cambium. CAF money was used >> to buy the Cambium radios. >> >> Second leg is scheduled for commissioning next week. >> >> >> >> Someone should take a look at this license and tell me the details on that >> passive repeater side. I am curious as to the leg distances. Too lazy to >> look it up. Frontier Telephone Company or whatever they are called now. >> Moab to Bald Mesa. Bald Mesa to Castle Valley. Passive on the second leg. >> I am betting these are 6 GHz links with huge antennas. >> >> >> >> >> >> >> >> >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> >> >> >> >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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