Thank you, we have bunch of videos in the pipeline, but we're always looking for interesting topics to talk about, so we'll keep it in mind for future episodes..
Hello. Depends how these 65 degrees are defined by the manufacturer, if its -3, -6 or -12dB. You can check more about this on this IW video about bit.ly/3FNSK5x. Thanks
If you use RF elements antennas, use our link calculator - rfelements.com/calc For any other antenna / frequency band, you can calculate it using link budget equation. Besides the antenna gain, you'll need to know the noise floor of the radio and the minimum SNR required for the data throughput you want to achieve.
If I have say a 5 dbi antenna and I add in 30 feet of low loss cable, like LMR 400 and it drops it to ~4 dbi, with that have any effect on the radiation pattern at all? eg. can you (or does it) make a higher gain antenna have a wider beam width when it has more cable loss or is it just a power drop and it all stays the same, just less distance/coverage?
Hi Brad, (any) cable only adds loss, antenna gain and beam width only depends on the antenna parameters and does not change depending on the cable that feeds it. As you write, cable loss results only in signal power drop, or smaller coverage distance.
With RF, you just pull out your antennas, stick them to pole, configure, and you're good to go in a matter of hours! to setup optical fiber, it'll take months! and if anything happens and it gets cut, it'll take again quite some time to fix...
if you need a temporary solution yes. But we don't want increased elecrosmog. So just just lay optic together with existing cables, that's easy. Or dig a small trench with machine and it will last and outperform RF for decades...
Which link calculator is your favorite and why? Share your opinion in a comment!
Extremely good .. can you also make a video on how QAM and OFDM work together ?
Thank you, we have bunch of videos in the pipeline, but we're always looking for interesting topics to talk about, so we'll keep it in mind for future episodes..
Is it one signal inside the beam with or group of parallel same signal???
Thanks for the excellent explanation . What i can't understand..how can a 65° degrees antenna beamwidth cover a sector of 120° ?
Hello. Depends how these 65 degrees are defined by the manufacturer, if its -3, -6 or -12dB. You can check more about this on this IW video about bit.ly/3FNSK5x. Thanks
hi sir! given its gain, how can i calculate the antenna max distance coverage?
lastly, RSSI and RSRP are parameters needs to monitor? thank you
If you use RF elements antennas, use our link calculator - rfelements.com/calc
For any other antenna / frequency band, you can calculate it using link budget equation. Besides the antenna gain, you'll need to know the noise floor of the radio and the minimum SNR required for the data throughput you want to achieve.
If I have say a 5 dbi antenna and I add in 30 feet of low loss cable, like LMR 400 and it drops it to ~4 dbi, with that have any effect on the radiation pattern at all? eg. can you (or does it) make a higher gain antenna have a wider beam width when it has more cable loss or is it just a power drop and it all stays the same, just less distance/coverage?
Hi Brad, (any) cable only adds loss, antenna gain and beam width only depends on the antenna parameters and does not change depending on the cable that feeds it. As you write, cable loss results only in signal power drop, or smaller coverage distance.
Rf elements, olhem para o Brasil
Some segments in the video are stamped not adjacent to each other
we tweaked it a little, how about now?
All the pictures I've seen are red blobs. We spent all this money on red blobs 😂🤷🏽♂️
how about fck RF and use optic cables???
Wireless and fiber are real options, both have their advantages and disadvantages. They actually complement each other very well..
@@Rfelements Well said!
With RF, you just pull out your antennas, stick them to pole, configure, and you're good to go in a matter of hours! to setup optical fiber, it'll take months! and if anything happens and it gets cut, it'll take again quite some time to fix...
if you need a temporary solution yes. But we don't want increased elecrosmog.
So just just lay optic together with existing cables, that's easy. Or dig a small trench with machine and it will last and outperform RF for decades...