With a 2+0 radio(s), what works on one polarity should be identical (or
close to it) on the other. When we've done this, we align the V or the H
(take your choice), then go back and check the other polarity to make
sure we're all set.
bp
<part15sbs{at}gmail{dot}com>
On 10/24/2016 8:01 PM, Sterling Jacobson wrote:
Yes, I feel that man, I feel that.
I don’t know exactly why, I checked the settings and they appeared
correct, but the Ceragons are really horrid on the their install
instructions and web page.
However, one of our techs got one of the real Ceragon techs on the
phone and should have worked through the whole configuration with them.
I’m not 100 percent sure that they are configured correctly for
alignment though.
That’s why I would prefer someone who had done these before and knew
the config and steps required for actual alignment and final lock in
on BOTH polarities.
My problem was all techs involved, and myself, had never touched or
aimed a dual polarity radio I think.
*From:*Af [mailto:[email protected]] *On Behalf Of *George Skorup
*Sent:* Monday, October 24, 2016 8:56 PM
*To:* [email protected]
*Subject:* Re: [AFMUG] UT Local Ceragon Installer
We just did two 11+ mile links on HP3-11's. And the guys ended up
about 20dB from target RSL on both of them. I said you're stuck on
side lobes, try again. They were all like, well, how are we supposed
to aim these things if it's hazy and we can't see the other end? I
promptly and semi violently explained that you get behind the
motherf***er and eye it up with that house/tree/whatever a 1/2 mile
away that I told you was in the center. And then you peak it out with
the volt meter. This shit ain't rocket science. No, instead you were
10 degrees off of where I told you. Sometimes you can't fix derp.
In your case though, why way off on one side? Sounds more like Tx
power setting. Maybe ATPC is on and misconfigured? I did that on a
Trango once. Confused the hell out of me for a few minutes until I saw
what I did.. or didn't do (set power per mod in the ATPC setup).
On 10/24/2016 9:45 PM, Sterling Jacobson wrote:
That’s probably exactly what happened.
They spent hours on it and were still way off on dB on one side only.
That’s why I assume the other side is angled or rotated too far
(dual polarity X-Pic).
One guy didn’t even use the volt meter, just had someone read dB
from the web page.
They didn’t even ask for angles, degrees, nothing.
Just all by supposed line of sight, no scopes, and not even
binoculars I think.
I wasn’t too happy about the whole situation, so I don’t want a
repeat of that.
It’s less than 10 miles across Utah Lake, one end on a leg on a
tower on top of a mountain, the other on a smaller tower attached
to concrete wall near the freeway.
*From:*Af [mailto:[email protected]] *On Behalf Of *Ken Hohhof
*Sent:* Monday, October 24, 2016 8:38 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] UT Local Ceragon Installer
Are these big dishes? Did you not get a well defined peak during
alignment? Is the signal more than a couple dB less than
predicted, like 20-30 dB low? You’re on a sidelobe. I’ve had
experienced tower guys run into this. They tend to be stubborn and
believe they can align a dish with a 1 degree beamwidth by eye,
and then they spend half an hour trying to tweak the alignment to
get an extra 1 dB when they’re 20 dB off. Once the signal starts
getting worse, they go back the other way instead of continuing.
Convince them to do a wide sweep, and they find the main lobe.
You have to go through the valley to find the mountain.
*From:*Af [mailto:[email protected]] *On Behalf Of *Sean Heskett
*Sent:* Monday, October 24, 2016 9:14 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] UT Local Ceragon Installer
The angle of the leg shouldn't matter...at most you'd loose ~3db
but it'd have to be almost at a 45* angle for that. (Chuck did a
demo at one of the animal farm events)
If you can get me remote access I can look at the config for ya.
They are very un-intuitive to say the least lol.
-Sean
On Monday, October 24, 2016, Sterling Jacobson
<[email protected] <mailto:[email protected]>> wrote:
I need to get my Ceragon link running, it's been forever.
I think someone on this list had offered me their service
local to Utah for this.
I am paying for this, either by Job or by hour.
If you remember offering, and it's you, or you think you would
like to help, then let me know.
I've got the link installed on both sides and configured, just
something not lined up or configured correctly.
The local guys I used originally earlier this year couldn't
figure it out.
And I think the mountain side link is not mounted true and
needs a proper mounting on the leg, or hardware to mount it
true, not on the leg at an angle.
