The G2 does ATPC in all bands. So remote RSL feedback is already there.
Exactly the same with the Trango ApexPlus which also did ATPC before it
did variable power. They then later adapted ATPC to provide variable
power. Exalt could do the same.
On 12/9/2016 4:14 PM, Eric Kuhnke wrote:
I think you may be asking too much to desire ATPC / varying transmit
power levels on Exalt's lowest priced model 18 GHz licensed band link.
It's actually a lot easier for the manufacturer to design the link
with a fixed +18 or +19 Tx power, than to do the feedback loop and
control system needed to properly and reliably implement ATPC based on
RSL thresholds on the other end radio. How do you know it definitely
does support higher tx power at lower modulations (you want +22 at
QPSK 3/4???), it's entirely possible the radio itself was designed
from the beginning as a fixed +18 Tx power. In any case this should
be a moot point with a 2 mile link.
On Fri, Dec 9, 2016 at 1:38 PM, George Skorup <[email protected]
<mailto:[email protected]>> wrote:
I really hate to admit it, but those requirements would make me
look at Exalt once more. The ExtendAir G2-18 would be a good fit.
We have a link at 2.5 miles on Radiowaves HP2's at both ends. It
has held up surprisingly well in the rain. 2 to 2.5 mile AF24
links in the same area drop. I guess the -34dBm RSL helps. Yes, it
dropped to -70dBm, but still maintained the required 100Mbps FDX.
You get single unit sparing with the replaceable/rotate-able
diplexer. They're 802.3at and use about 26 watts. You get ACM
without a license key. They come with a base 25Mbps license. If
the promo is still going, you get 100Mbps keys with it. I don't
remember if there's a 200 or 250Mbps or if you have to go from 100
to the full 370.
The one thing that Ken and I have both asked Exalt for, which at
this point I expect will never happen, is power per mod level, aka
variable power. All you get is fixed power with ACM on. IIRC, 18
or 19dBm for 18GHz and 21dBm for 11GHz at 256QAM. The radios
definitely do support higher power at lower modulations, so
they're either stupid or lazy. No coordinator will even bother
with variable power on the PCNs. We tried and got objections
stating that "the radios don't do that". Exalt kept saying it's
coming in future software, yet here we are two years later and
nothing.
On 12/9/2016 2:47 PM, Adam Moffett wrote:
A lot of manufacturers to pick from....
With licensing and a spare radio/dish, I'm thinking $9,000.
You could talk about other companies' unlicensed 24ghz options
and compare apples to apples.
------ Original Message ------
From: "Eric Muehleisen" <[email protected]
<mailto:[email protected]>>
To: "[email protected]" <mailto:[email protected]> <[email protected]
<mailto:[email protected]>>
Sent: 12/9/2016 2:31:13 PM
Subject: [AFMUG] microwave pricing
2 mile 18ghz link. Only needing about 150mb/s speeds. 2ft. dish
maximum. Five9's. Rainzone K.
Need a quick and dirty, ballpark idea of costs including
licensing and spare radio/dish.
Need to price it against an AirFiber24 install.
