Misalignment will almost always affect both directions. Yes, on a licensed link the 2 directions are different frequencies, but not that different.
What you describe sounds kind of like a bad radio, or a configuration problem. Like xmt power set wrong on one end, or a xmt frequency out of range of the diplexer. I’m not familiar with Ceragon ordering, but I assume they have different diplexers for different sub bands. From: Af [mailto:af-boun...@afmug.com] On Behalf Of Sterling Jacobson Sent: Monday, October 24, 2016 9:45 PM To: af@afmug.com Subject: Re: [AFMUG] UT Local Ceragon Installer 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:af-boun...@afmug.com] On Behalf Of Ken Hohhof Sent: Monday, October 24, 2016 8:38 PM To: af@afmug.com <mailto:af@afmug.com> 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:af-boun...@afmug.com] On Behalf Of Sean Heskett Sent: Monday, October 24, 2016 9:14 PM To: af@afmug.com <mailto:af@afmug.com> 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 <sterl...@avative.net <mailto:sterl...@avative.net> > 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.
