Yep, spendy. The point to point stuff at gigabit speeds is priced as an alternative to fiber, so it's cheap compared to fiber, but we're on a much smaller budget in ham land :) 3.5 GHz is a good choice. I helped implement a 3.5GHz ham system in the Bay Area. Two sectors on Black Mountain above Palo Alto, and a point to point link to Berkeley hills. We used the ubiquiti radios and found a stash on eBay. Randy On Wed, Jun 14, 2017 at 8:21 PM Bryan Fields <Bryan@bryanfields.net> wrote:
On 6/14/17 10:38 PM, Randy Neals wrote:
Hi All,
I spotted some interesting 10 GHz commercial Point-to-Point equipment that might work on our 3cm ham band. http://www.mimosa.co/products/b11
The radio spec say is physically supports 10.0-11.7 but the FCC version available in the US is locked to 10.7-11.7 GHz. The radio is TDMA-FD so presumably no diplexers or band filters like classic duplex uWave gear to get in the way of operating lower in the band.
So it's about 3k for a pair of radios, then you need antennas, about $1800 for a pair of HP dishes (though in the ham band we don't need that).
That's about $5000 for a link. It's not cheap by any means, and while cheap for microwave, it's not cheap for hams :)
The company is in Santa Clara..it might be possible to convince them to support a version that works on our 3cm ham band, 10.0-10.5 GHz. Countries in ITU Region 1 and 3 allocate 10.0-10.45 to Fixed service, so this may be as easy as buying the version with International software. It's a bit pricey, but could be good for backbone links, leaving 5 GHz for access nodes.
3 GHz works, and it's cheaper, under $1k per link.
As I was researching this, I realized that Mimosa was the company that petitioned the FCC to reallocate the 10GHz ham band. Using their
equipment
on our 3cm band, and then showing how we're actually using the 3cm band might be fun! :-)
They claim their founder _was_ a ham, so it's ok to be anti-ham.
Radio MIMO & Modulation 4x4:4 MIMO OFDM up to 256QAM Bandwidth Single or Dual 20/40/80 MHz channels Frequency Range 10000-11700 MHz restricted by country of operation Max Output Power 24 dBm Sensitivity ( MCS 0 ) -87 dBm @ 80 MHz -90 dBm @ 40 MHz -93 dBm @ 20 MHz
https://fccid.io/2ABZJ-100-00036
Internal pics https://fccid.io/pdf.php?id=2829434
User manual https://fccid.io/pdf.php?id=2829440
An atheros and transverter.
-- Bryan Fields
727-409-1194 - Voice http://bryanfields.net _______________________________________________ PSDR mailing list PSDR@hamwan.org http://mail.hamwan.net/mailman/listinfo/psdr