Plus antenna vendors wanted to sell antennas & not adapters. We ended up
buying new radios from a radio vendor in order to avoid swapping antennas.
We wouldn't have necessarily picked the radio(s) we did if we could have
upgraded the link with a simple radio+adapter.
--
bp
part15sbs{at}gmail{dot}com
On Fri, Feb 8, 2019 at 4:35 PM Tim Hardy <thardy...@gmail.com> wrote:
> I can backup the third bullet point as I saw it from an antenna vendor’s
> viewpoint. The radios vendors forbid the antenna vendor from selling the
> interface plate.
>
> Sent from my iPad
>
> On Feb 8, 2019, at 6:55 PM, Daniel White <dwh...@atheral.com> wrote:
>
> So on the why... a few things I can add:
>
> - Many manufacturers believed their direct connect interface was
> special, or proprietary... and would not openly provide specifications (I
> seem to recall a former employer zealous lawyers threatening to sue someone
> on this list... :-)
> - There was no advantage, on the manufacturer side, to standardize
> - it would also inevitably prevent manufacturers from making other
> changes they may see as beneficial
> - Manufacturers want to sell antennas, and by creating a special
> interface they control the supply chain of new antennas (since the antenna
> manufacturers sign agreements to prevent it)
> - The market didn't push back hard enough on proprietary interfaces.
>
>
> [image: Logo] <https://atheral.com/>
> Daniel White
> Co-Founder - Business Development & Operations
> phone: +1 (702) 470-2770
> direct: +1 (702) 470-2766
>
> Mark Radabaugh wrote on 2/8/19 16:00:
>
> To add to what Chuck said -
>
> The manufacturers don’t make the antenna’s specific to the various
> manufacturers other than adding an adapter plate. You can remove the
> radio mount from a Andrew / Commscope antenna and replace it with the
> adapter kit for the radio brand. The adapter kits can be ordered
> individually as needed - the hard part is finding the part numbers.
> Radiowaves is the same. We have changed a number of antenna’s from
> Dragonwave, PTP800, and SAF to PTP820 or SAF over the years.
>
> If anyone wants Andrew Remec (PTP800) adapters we have a pile of them.
>
> Mark
>
> On Feb 8, 2019, at 5:25 PM, Chuck McCown <ch...@wbmfg.com> wrote:
>
> On rectangular waveguide, almost everyone conforms to the inside
> dimensions of the waveguide for the frequency. However for some
> frequencies there are up to three different waveguide sizes that will
> work. Lots of overlap in the bandwidths of wavelengths.
>
> But for dual pol antennas, the feeds all have a circular waveguide and
> those are much less common and not standardized. So they pick a diameter
> that fits the center of their bandwidth. .750”, .777” .780” are all common
> sizes used for 11 GHz. And really you can mate them with each other with
> almost no return loss issues.
>
> My transgender / interspecies adapter products generally use the exact
> diameter the antenna it mates with uses.
>
> Now, that is the inside of the waveguide. The outside of the waveguide,
> the “nose” of the antenna, that is a variety of inventions by the various
> radio manufacturers. The Remec design is most common. A handful of radio
> vendors used that form factor. It is a bit larger than it needs to be with
> the exception of 6 GHz rectangular. That just barely fits in a Remec and
> would not fit in a Dragonwave.
>
> Exalt is so close to Remec it is laughable. I really wish they would have
> just used the same dimensions, but everybody has to be different. I think
> they may have believe that if they had their own standard, it would
> increase brand loyalty as nobody wants to change antennas. But in reality,
> I can make any radio work with any antenna if the frequencies are similar.
>
> *From:* Colin Stanners
> *Sent:* Friday, February 08, 2019 2:56 PM
> *To:* AnimalFarm Microwave Users Group
> *Subject:* [AFMUG] Why hasn't there been a radio-antenna waveguide
> standard?
>
> Probably more a question for Chuck then anyone else.
>
> There's (ignoring frequency-related size) at least a dozen
> <http://grante.hu/products/passives/ordering.html> waveguide connector
> standards to interface radios with antennas... when buying a licensed
> backhaul radio, pretty much every physical and software interface on the
> unit conforms to a standard, except the antenna interface. But it seems
> that a physical-only interface like that would be the easiest to
> standardize. Any idea why that has never happened in the industry?
>
>
> ------------------------------
> --
> 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
>
>
>
>
>
> --
> 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
>
--
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
