My techs bug me all the time why does Cambium keep changing the tones between models and firmware versions.
We recently had an install of a second 450b mid-gain right next to an existing one, the only difference was the old one was still on 15.2 FW and the new one was on 16.2.2. The signal levels were the same, but the tones were completely different frequencies. I realize many WISPs don’t use tone alignment, and others don’t use it for anything but a relative indication for the purpose of aiming. So most are probably wondering what does it matter if a -65 signal is 2000 Hz and after a firmware update that same signal is 1000 Hz. From: AF <af-boun...@af.afmug.com> On Behalf Of Matt Mangriotis via AF Sent: Thursday, August 27, 2020 2:10 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Cc: Matt Mangriotis <matt.mangrio...@cambiumnetworks.com> Subject: Re: [AFMUG] [ External ] Audio tune 450i SMs? The resistors change the frequency of the tone. In fact, some people may prefer the tone without any resistors at all… and sometimes (perhaps inadvertently) the tone frequency changes with updates to the software revision. The team does test this feature, but I can’t say that I have first hand experience using it with a cable with that specific value resistor… so couldn’t tell you what it sounds like on the currently released version of software. From: AF <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > On Behalf Of Ken Hohhof Sent: Thursday, August 27, 2020 1:58 PM To: 'AnimalFarm Microwave Users Group' <af@af.afmug.com <mailto:af@af.afmug.com> > Subject: Re: [AFMUG] [ External ] Audio tune 450i SMs? I bought one 450i SM by mistake once, I somehow thought the 3 GHz SM with the integral panel was discontinued when the 450b came out. And I built one of those stupid cables, including the 220 ohm resistors (which I suspect aren’t really needed). Have you tried to buy resistors lately? No more Radio Shacks, Frys doesn’t carry components anymore, I found some in the discontinued items bin at MicroCenter. Bottom line, when I realized I would also need a 48V POE, I put that SM on the shelf where it still sits today. I’m not sure why you’d want one. On top of everything else, it’s very expensive. I think its claim to fame is the dynamically tuned front end filter, which I guess would help if you had extremely high adjacent channel interference. I should really put it on eBay or something. From: AF <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > On Behalf Of Matt Mangriotis via AF Sent: Thursday, August 27, 2020 12:38 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com <mailto:af@af.afmug.com> > Cc: Matt Mangriotis <matt.mangrio...@cambiumnetworks.com <mailto:matt.mangrio...@cambiumnetworks.com> > Subject: Re: [AFMUG] [ External ] Audio tune 450i SMs? Sam – Please see this forum post… https://community.cambiumnetworks.com/t/pmp450i-sm-alignment-tones/54898 <https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcommunity.cambiumnetworks.com%2Ft%2Fpmp450i-sm-alignment-tones%2F54898&data=02%7C01%7Cmatt.mangriotis%40cambiumnetworks.com%7C7bf06b2dabba4e62576b08d84abb44ea%7C0e263e36340946228ac818d993e76eb6%7C0%7C1%7C637341515507837732&sdata=hWLd2jywJmoe4OtzpMWHsFupqHwciHIFsmWA%2BX8GTAI%3D&reserved=0> Matt From: AF <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > On Behalf Of Sam Lambie Sent: Thursday, August 27, 2020 12:27 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com <mailto:af@af.afmug.com> > Subject: [ External ] [AFMUG] Audio tune 450i SMs? I just installed my 1st 450i sm and am stumped on how to tune with an audio speaker like the old 450 and 450bs. What am I missing?
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