That's a good point. With 700Mhz you might be better off with the ol'
Langley-Rice prediction from Towercoverage.com or Radio Mobile.
On 6/23/2020 10:06 AM, Mark Radabaugh wrote:
I’m a little confused by your question. LIDAR data is going to show you
line-of-site locations which is not what TVWS gear is best used for servicing.
LIDAR data only makes sense in identifying the areas you can’t serve with other
gear. I suppose it gives you a ’negative’ view of the area to identify area
you might want to serve with TVWS.
Mark
On Jun 23, 2020, at 10:02 AM, D. Bernardi <[email protected]> wrote:
Hi,
I appreciate all the feedback.
RADWIN is still in beta and will not have product until Q4. Redline does have
production gear and I'm still gathering their information.
Would it make sense to build/buy an analyzer for collecting site specific data
over a few days and couple that with LiDAR data to try to classify an area as
potentially serviceable.
In addition if there are identifiable discrepancies with real data and the
database, can these be corrected?
At 10:19 AM 6/17/2020, you wrote:
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_0CCB_01D64490.D14AADC0"
Content-Language: en-us
Spectrum is always going to be a challenge in TVWS. The recent FCC TV channel
auction/repack has eliminated some of the channels so now there is less. Some
manufacturers are doing channel bonding to improve performance and throughput.
The problem with the databases and channel availability is that they only
report where your base station is located and how many channels you can use.
You could get a great list of channels for use at the tower, then reality can
kick in and when you try to install CPE devices, those same channels may not be
available to transmit on for the client end. This could really become a pain
when it breaks your planned use of bonded/adjacent channels. Just losing one
available channel on the client end (because the client location is now within
a channel contour area) can kill your thoughts on viability. With fewer not
adjacent channels available after the repack it takes some serious
investigation for your planned deployment to see if things will work for you.
The CPE equipment is still quite expensive, most prices you see quoted do not
include an antenna. TVWS CPE antennas with any amount of gain are expensive and
physically large. Good rule of thumb for CPE, antenna and labor usually comes
in between $800-$1000. There is just not enough production runs from any
manufacturer to get the price point lower.
Thank you,
Brian Webster
www.wirelessmapping.com
From: AF [mailto:[email protected]] On Behalf Of Matt Hoppes
Sent: Wednesday, June 17, 2020 9:03 AM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] TVWS feasibility
Using redline gear I get 40 meg completely non line of site through about 3/4
of a forest.
But yeah. It all sucks.
I have three links deployed. They serve specific purposes. Nothing I would do
on a grand scale.
On Jun 17, 2020, at 8:47 AM, Eric Nielsen <[email protected]> wrote:

Comsearch offers TVWS maps that show channel availability. If there's a
specific area that's of particular interest to you, try reaching out to them to
see if they could give you an idea of encumbrances.
On Tue, Jun 16, 2020 at 2:01 PM D. Bernardi
<<mailto:[email protected]>[email protected]> wrote:
Howdy folks,
I'm looking into solutions to deliver Internet to very rural small
pockets of NLOS subscribers where fiber, copper or tower/structure
deployments are not practical or cost effective. If I'm to believe
vendor briefs, TVWS technology seems to be making recent advancements.
Anyone have practical experience or advice on using TVWS?
Thanks in advance.
Dave B.
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