5G vs. C-band

here from me below 3600 ghz no signal, here is the wimax covering the C band

Sky and star watchers have gone far from urban areas due to light pollution, I guess the same is expected of C band fans due to the 5G network

The ADE antenna helped me against interference in the C band.

Spectrum interference on prime focus antenna

and ADE antenna, spectrum almost without interference.

What's an ADE antenna?

Quote from newsy

What's an ADE antenna?

ADE = Axis-Displaced Dual-Reflector Antenna

It is an antenna with a secondary reflector, similar to a cassegrein or gregorian. The difference is in the picture. These are high efficiency antennas.

Hey Peon,

that sounds really intersting. Which manufacturer produced your antena?

It's a segment dish, so is ku-band reception also efficient?

I always wondered why there are no more Fibo/Gregorian antenas on the market any more.

Hi newsy,

This is an antenna from NWIEE, originally for X band Transmit and C band Receive.

After appropriate modification, I use it for all frequency bands, C, X, Ku and Ka. I'm still tweaking it. However, it may not be as accurate for the C band. But even so, its gain is slightly better by about 1 to 1.5-dB compared to a prime focus antenna of the same diameter. The immunity to LTE internet interference is very good.

Dear, Chucky!

Few months early ago i'm writed two post to sat.hu forum. The post showing, how its works the 5G system in the many countrys.

netboard.hu fórum

Your problem not 5G radio signal, but the your used system, and/or system connected pieces, the cable shield, DISEqC switch, and connector shileds, and the interferece, in the 950-2100 MHz band range

The example, to the your anomaly.

You need the receiving any C-band signal. This signal frequency higher than that 5G frequency, but!

Your LNB converter, converting C-band signal to the lowest 950-2100 MHz, this band maybe the anomaly.

If need you the C-band signal receiving, this frequency band or spektrum not yor problem cases, because not same the receiving as 5G frequency, because the broadcast reception frequency highes, not 3,4 GHz or 3,8 GHz.

Example:

netboard.hu fórum

The infterference, and harmonic maybe present, the 950-2100 MHz frequency range.

And more one importatn.

The LTE filter, not filter, only this "name".

This function, cuts it out the 3,4-3,8 GHz range, ergo the LNB oscillator not converting to this signal range, so there is no interference, therefore, the satellite receiver does not detect the interference.

(Sorry, i dont speak perfectly English.)

Bests, regard

SaTom

Greetings SaTom.
You are right about something, but if there is a strong transmitter on the relevant frequencies that is close to your receiving device - antenna, then you have a problem with reception. You are probably lucky that the mentioned frequencies are not used in your location. Unfortunately, with us, it is occupied from 3400MHz to 3800MHz. I am attaching tables of assigned frequencies.

Partial help is in the relevant antenna, but even that is not a 100% solution. The interference is suppressed, but the useful signal is still partially damaged. RE: 5G vs. C-band

Hi, Peon!

Yes, its true, my answer firstly prioritated say to Chucky, and secondary information to all, therefore im writed, "the many countrys", of course, not all.

With in many country, not "secondary", the QTH place, and the base station frequency range.

But!

Te question exactly, your which satellite, where are you want to receive?

If you country (Slovakia) using the 3,4 to 3,8 GHz range, what is the satellites, which in this band range broadcasting?

Second question (without DX), that this satellites footprint cover inside, or outside ont the your QTH palce?

Third question, the your system noise, harmonic frequency, with the near base stations, and the system shields in context.

Four, the received signal frequency, and oscillator to converted frequency and context in the "area" noise...

And, many more question, and parameter...

If you send to me spektrum, I will be happy to examine to you.

Momently also I now working this project. (My friend (zoro67) having, and use SDR, but too many problem have receiving....high noise, many harmonic frequency, etc)

One, or two week (or litle maybe later), if ending this my measuring project, showing to you, and all forum members the studies, and possibel solutions also.

Best, regards

SaTom

Thank you for your response SaTom.
I understand your questions, but it is useless to deal with system noise when the interfering signal is twice as strong as the signal from the satellite. I personally receive satellites from orbit from 53 west to 98 east. The band from 3.4 to 3.7GHz is mainly used by satellites located in the east. In the western positions, they are gradually turning off the transponders in the disturbed band. Reception outside the disturbed band is problem-free.

Hi, Peon!

Yes, as I already wrote to you, your case, and country dont perfect example the system noise, and any factores, but many countrys, QTH and base station, distance, system noise, bringing to equipotential, system grounds, many in context true, as I wroted before.

Its my country dont same problem, because different the 5G system parameter, different the factor level, and disturbing parameter, but same the broadcasting, or receiving frequency.

If i ending the 5G measuring, and evaluation, i showing the studies regarding my country, and problems (even like my Chucky's, zoro67 friends problem) Of course, this studies dont tru all country in the world, but it may be true, many country :-)

"In the western positions, they are gradually turning off the transponders in the disturbed band." Yes, this the relative long tima solutions. The broadcasting frequency uppering to the high range in the all country, or int the world is.

(Maybe, and for good, but until then time, finding need to the solution)

Sorry, i f i dont spekaing correctly in engllish. I was self-taught int the language. My country, it ago time was taught the Russian :-)