+1
On 03/04/2015 11:44 AM, Chuck McCown 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 <mailto:part15...@gmail.com>
*Sent:* Wednesday, March 04, 2015 10:35 AM
*To:* af@afmug.com <mailto: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 <mailto: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 <tel:937-552-2340>
Direct: 937-552-2343 <tel: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 <mailto: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 <tel:915-861-1390>
