With a signal that strong, there may be misalignment issues too where any
movement of one of the antenna puts you down on the side of the main lobe.
From: Jaime Solorza
Sent: Wednesday, March 04, 2015 11:33 AM
To: Animal Farm
Subject: Re: [AFMUG] Smart guys on lost question
The guyed tower looks solidly built and guyed when I saw it a few weeks ago on
way to find a restaurant in Midland.
275 footer with dish at 150ft level
Jaime Solorza
On Mar 4, 2015 10:44 AM, "Chuck McCown" <ch...@wbmfg.com> wrote:
Monopoles are subject to the vortex shedding problem causing them to
oscillate. If the axis of the sway causes the dish to aim high and then low it
would do exactly what Jaime is guessing it is doing.
I would suggest mount the antennas lower if possible and/or use smaller
dishes. There is plenty of signal.
2’ or 18” would still work just fine at that range.
From: Bill Prince
Sent: Wednesday, March 04, 2015 10:35 AM
To: af@afmug.com
Subject: Re: [AFMUG] Smart guys on lost question
I would think the other way. Many guyed towers are not 100% stable in
rotation, and running a PTP link from one would likely require torque arrestors.
bp
<part15sbs{at}gmail{dot}com>
On 3/4/2015 8:51 AM, Jaime Solorza wrote:
The FCC document they gave me says 21 dBm tx power and that what is set on
radios according to guy who hired me to help verify path. One 3 ft dish is on
huge guyed tower and another on a monopole with several other drums and a
sectors. They experience signal drops during high winds. my guess just from
little data giving to me is that monopole is oscillating enough to affect path
with signal drops. It is a very windy area and according to their IT guy
this is when they see some issues. Link doesn't drop completely but alarms in
windy season allot.
Jaime Solorza
Wireless Systems Architect
915-861-1390
On Wed, Mar 4, 2015 at 9:43 AM, Josh Luthman <j...@imaginenetworksllc.com>
wrote:
Always listen to the manufacturer. I don't anyone has ever come up with
a case where their figure was noticeably off. Certainly never not on the side
of caution.
Are you using their full tx power or the tx power of the highest
modulation?
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
On Wed, Mar 4, 2015 at 11:31 AM, Jaime Solorza
<losguyswirel...@gmail.com> wrote:
Hello Smart Dudes on the list:
Running a 3.348 mile path for 18 Ghz Dragonwave link to compare what
someone else came up with. I am wondering if they used just unfaded free
space loss calculation and coming up with a figure 10dB better than mine, I
am using unfaded urban area free space loss for mime. I use just free space
loss we are within 3db of each other. I added 1 db of cable loss since I do
not know if waveguide was used or many other details. I will get all that
information on site.
I have always engineered paths on conservative side since the start.
What are your thoughts Hobson?
Thx
Jaime Solorza
Wireless Systems Architect
915-861-1390
