JT

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Posts posted by JT

  1. jasne. urcite by som pockal s rozhodovanim na vyladenu a stabilnu verziu. pokial ide o beamforming, tam je z principu potreba viac anten /v zmysle viac priestorovo oddelenych vyzarovakov/. cize najjednoduchsie riesenie je pouzit dve 2x2 horn anteny a vyskusat to v praxi. Ona aj ta 4x4 antena originalnych vyrobcov (Cambium, mimosa) su vlastne dve patch array anteny pod jednym radomom, to nie je ziadne tajomstvo a v zasade ani ziadna raketova veda. U tohto typu anteny ale integraciou usetrite pomerne dost materialu (nakladov) a priestoru na stoziari. Integraciou dvoch hornov neusetrite takmer nic. Tak velmi zhruba a zjednodusene povedane..

  2. Toro - this will answer your questions about distance, modulations, etc https://rfelements.com/calc/  Ultrahorn´s main strength is the performance in high noise environment due to it´s clean radiation pattern.

    If you are interested in user experience, check our RF elements English user group on Fb, there is recently nice deployment in discussion (posted by Reilly Flaherty).  

  3. krajne polohy su plus a minus 12.5° Zvysok sa da pomerne jednoducho aproximovat. Pri vyzarovacej charakteristike tychto sektorovych anten by to musela byt skutocne specialna situacia, aby to zalezalo na jednom stupni tiltu anteny.

    stupnice byvaju na panelovych sektorkach - aj na nasich - kde je hlavny lalok extremne plochy (ma velmi nizky uhol vyzarovania v elevacnej rovine) a kde je 1° tiltu naozaj dolezity pre vysledok. Z rovnakeho dovodu udavaju vyrobcovia aj elektricky tilt, ak je to relevantne.

  4. We are currently in process of shipping replacement parts /screws, radomes, bracket clamps/ to our Master distributors. I think in Europe they will be receiving it and ready next week, overseas sometimes third week of July.

    Seizing is an inherent issue when using stainless steel hardware. To prevent seizing to a minimum, use Loctite 8009 or any similar anti seize lubricant. Loctite 8009 shall be globally available.

  5. Mario,

    1. I believe the place is noisy (even if not, it will soon be)

    2. shooting sector across the town is not the best practise (nothing that I can recommend to do in general). 

    3. if it is only 2 clients and you really have to shoot across the town, you would be much better with two PtP links

    other than 1-3, you will be good with 30° Horn and two decent CPEs. Just mind that this topology is not what you should do to have good performance and stable network.