Here in South Africa there are a few users of C band, but most have moved to KU band, only ones that are really using it are banks for data links ( old equipment still going after 20 years of running and not going to be changed until the satellites die) and the spectrum operator for radio, TV and such links to the broadcast locations. There are a few data links from some of the older ISP's, but I do not know if they are in use any more. most have moved to fibre.
There used to be a microwave link connecting major centres together for telephone, television and frame relay, but they have all been closed down and moved to either fibre or ku band links, mostly fibre buried in the railway rights of way ( includes pipelines as well) and a network of fibre optics on power transmission lines ( hard to steal those, 132kV makes a good deterrent to cable thieves, though they steal the steel structure until it falls down)
Haha, yeah, many people explained that hair pin word-origin to me after I posted the video. I'm always glad to learn and particularly improve my English :) I got a new camera that allows better close-ups, see my newest video for instance.
I think 'hair-pin' filters are so named because of the sharp bend in the track. Much like hair-pin bends on a road or race course which are also sharp bends in the track that double back on themselves.
DRO uses electric field, changing the chamber size with the slug changes capacitance to the ceramic and thus the frequency. Attenuator on LO is to reduce signal fed back to the LO oscillator and thus reduce pulling. Also note no solder mask on the high frequency area, as it is too lossy at that frequency to have it on. I used to work a little on radar systems, but there it was all plumbing and piping.
Outstanding videos! Always wanted to know what is inside the LNB and how it works. Presently receiving C band National Weather Service NOAAPORT, GOES 13 EMWIN (Emergency Managers Weather Information Network), and GEONETCAST AMERICAS. I would like to see more videos pertaining to any type of satellite communications.
Great video! I am new to electronics, and I got to your amazing blog and youtube channel after watching Mike's Electrics Stuff teardown of the Anritsu Spectrum Analyzer. When I saw those strange looking pcb arranges I was just amazed at what that was, but I saw your response on the video and rush to your blog and now I at least know those are filters. Keep the good job going!
Nice video, C band satellites are commonly used in the asian countries (India, China, Pakistan, Bangladesh, etc). BTW I was 15 years old when I tore down the first LNB (C band and Ku band). I've tried turning that big screw and that ended changing the frequencies for all the channels that time (the old school analog broadcasting system). :P
Please show us how the portable dishes looks like from the inside and out. By portable I mean the mini ones that we find on boats, caravans... Etc. I wish to purchase that type of LNB and diy the dish from a cooking wok myself. Am a bit confused because unlike ordinary home dishes the LNBs in these ones are facing up towards the sky. Can I use a GPS antina to receive a satt radio signal // podcasts or video..!! thanx
To actually get the point across, it's only the shape of the hairpin that counts, a sharp U-turn is involved that happen to have long legs. But a mountain road with switchbacks also has this shape viewed from above. Thin legs of the hairpin is not the point.
I guess technically that is possible. You would probably need a new resonator for the desired LO frequency and you would have to adjust all the filters accordingly
To the critics > The lights he bought in order to please you cost MONEY! Did the critic pay for those lights? NO! Is the critic paying for this guy's time that he is giving you, after he learned such knowledge he is sharing with you? NO! Did the critic pay for the time this guy used to learn the knowledge he knows? NO! People have to remember that time and knowledge COST MONEY that is always needed for many things such as shelter, food, security, the insurance rackets, government rackets, oil rackets, etc etc etc, in order to survive in this world. Do you PAY for anything in your life? Well everyone else has to pay the same amount as you do. Critics need to appreciate more by realizing people might not have whatever money you critics think they have in order to BUY those lights, a higher quality camera, microphone, computer, time to learn how and edit videos etc.
Pls sir I have cband lnb on my dish that is pointed to 68e Sony package but my signal on my 1.85 metres dish reduce 59 in the morning from 12 and comes back to 63 at 12 in the evening. Pls how can I boost the signal..
Have you used the cband or Ku band LNBs for radio astronomy? I installed both types, but I hear an AC hum. I powered the LNBs with both 12 VDC batteries and A DC power supply. I found both C-band and KU band LNBs are creating the weird AC hum around 1200 GHZ on my 2 Icom r7000 radios. I used a RTL SDR receiver, but it has a lot of internal spikes. Is the AC hum normal or is the LNBs defective--I guessing the dielectric capacitors have dried out.
Hey Mike. That's an interesting question. Since you tried 12 VDC batteries, I would guess that the AC hum is unlikely to be injected through the voltage rails. This I would guess that dried out caps is likely not the issue. If you have the option to try a different LNB, I'd suggest to try that first.
hello goodnight! A question is it possible to modify the lnb to capture the frequencies of the uhf ISDBT terrestrial digital tv bands from 450 to 860 mhz. mhz .I'm thinking of reusing the common fta receivers dvbs2 hd h264 .as if it were a common terrestrial digital converter.
Hi! No, that frequency range is way to low for any reasonable modifications of a common LNB. That said, your receive range isn't too far away from the receive range of the FTA receivers. So might I suggest to build a classic upconverter? But from what I remember, the terrestrial DVBS and satellite standard have some protocol differences.
Yep, looks good ! And if you light your selfs from the sides, you also don't get blinded when looking into the camera. Maybe a LEE or ROSCO filter would do the trick to get the Hollywood effect. For example: 208 Full C.T. Orange + .6 ND Converts daylight (6500K) to tungsten (3200K) and reduces light 2 stops.
Dude we can see you and hear you fine ….!! For you sharing your valuable knowledge its all good 👍👍👍you making a tech video not a movie ! So dont worry you are good mate 👍👍👍😊
hey #KF5OBS Your topic love it.. ;) i have question that is it possible to use c band lnb for (wifi) channels directly with coax cable to the wifi router to recieve signal..? For my project dude help plZ..!
Great videos and very informative! I like the deep technical knowledge. this is the real hain pin: Wikipedia: Bobby Pin Only feedback I would give is that higher magnification of the board would be awesome.
Hi I am a student trying to hook up a LNB C-band to a 5 meter parabolic dish and are trying to analyze the signal using GNU radio I was wondering if you had ever used this and had some insight on how to implement this. Any help would be appericated
Here in South Africa there are a few users of C band, but most have moved to KU band, only ones that are really using it are banks for data links ( old equipment still going after 20 years of running and not going to be changed until the satellites die) and the spectrum operator for radio, TV and such links to the broadcast locations. There are a few data links from some of the older ISP's, but I do not know if they are in use any more. most have moved to fibre.
There used to be a microwave link connecting major centres together for telephone, television and frame relay, but they have all been closed down and moved to either fibre or ku band links, mostly fibre buried in the railway rights of way ( includes pipelines as well) and a network of fibre optics on power transmission lines ( hard to steal those, 132kV makes a good deterrent to cable thieves, though they steal the steel structure until it falls down)
The SO-14 device at the bottom left is a FET driver for biasing the RF FETs.
C-Band is still used in the Philippones and very active on tv broadcast.
Haha, yeah, many people explained that hair pin word-origin to me after I posted the video. I'm always glad to learn and particularly improve my English :) I got a new camera that allows better close-ups, see my newest video for instance.
I think 'hair-pin' filters are so named because of the sharp bend in the track. Much like hair-pin bends on a road or race course which are also sharp bends in the track that double back on themselves.
DRO uses electric field, changing the chamber size with the slug changes capacitance to the ceramic and thus the frequency. Attenuator on LO is to reduce signal fed back to the LO oscillator and thus reduce pulling. Also note no solder mask on the high frequency area, as it is too lossy at that frequency to have it on. I used to work a little on radar systems, but there it was all plumbing and piping.
Thank you for your kind words!
Very nice! Lots of material covered.
in the 90's I turned directv's ku-band lnb and Gardiner c-band lnb into TV transmitters.
Thank you very much. Make sure you subscribe, there's gonna be more stuff to come soon.
Mike and Dave (EEVBlog) try to stay far away from RF so I though it's a great niche to fill up here on UA-cam. Thanks for your encouragement.
Outstanding videos! Always wanted to know what is inside the LNB and how it works. Presently receiving C band National Weather Service NOAAPORT, GOES 13 EMWIN (Emergency Managers Weather Information Network), and GEONETCAST AMERICAS. I would like to see more videos pertaining to any type of satellite communications.
Great video! I am new to electronics, and I got to your amazing blog and youtube channel after watching Mike's Electrics Stuff teardown of the Anritsu Spectrum Analyzer. When I saw those strange looking pcb arranges I was just amazed at what that was, but I saw your response on the video and rush to your blog and now I at least know those are filters. Keep the good job going!
Just discovered your video blogs....keep 'em up! Hope to watch the rest of them soon.
73 - Dino KL0S
grate video. i would like to see a tear down of a 2Watt newtec BUC
Could you tear down a dish network duel band lnb?
So i can convert a dro LNB to PLL by removing dielectric resonator and fixing a 25K crystal ? As mentioned at 9:11
No. Then the oscillator would simply oscillate at the crystals frequency. Not more, not less.
How can this be modified to be more powerful
Good luck sir 🎉
I tried to correct that but the rendering in Kdenlive screwed up every time I used the "rotate" effect.
Nice video, C band satellites are commonly used in the asian countries (India, China, Pakistan, Bangladesh, etc).
BTW I was 15 years old when I tore down the first LNB (C band and Ku band). I've tried turning that big screw and that ended changing the frequencies for all the channels that time (the old school analog broadcasting system). :P
Please show us how the portable dishes looks like from the inside and out. By portable I mean the mini ones that we find on boats, caravans... Etc. I wish to purchase that type of LNB and diy the dish from a cooking wok myself. Am a bit confused because unlike ordinary home dishes the LNBs in these ones are facing up towards the sky. Can I use a GPS antina to receive a satt radio signal // podcasts or video..!! thanx
You are doing an amazing job with these videos! I am already looking forward to your next one! Nice!
I want to explained in arabic
Hairpin filters are called so because they resemble hairpins (AKA Bobby pins)
Girls use them to hold their hair in place.
To actually get the point across, it's only the shape of the hairpin that counts, a sharp U-turn is involved that happen to have long legs. But a mountain road with switchbacks also has this shape viewed from above. Thin legs of the hairpin is not the point.
it was very helpful video.
can we lower the the DRO local oscilator to around 2-3 GHz so that i can modify the LNB for my project . thanks in advance
teardown starts at 4:25
Great vid!The board looks like that of my cordless telephone!
Sir, can you please tell the name of Dielectric resonator material used in this LNB?
Nice learnt many things on RF ...
can u share me a ku band buc circuit structure and describe
There's a video somewhere on my channel featuring a Ku band BUC.
Thanks for the informative video. Is there any way to modify the LNB frequency from 4.2 to 4.8?
I guess technically that is possible. You would probably need a new resonator for the desired LO frequency and you would have to adjust all the filters accordingly
Thanks!
thanks for the video. Could you please tell me, what is the output voltage and current of C and Ku band LNB?
Pls am in Ghana how can I boost my signal on my cband lnb
very interesting subject.Thank you very much
To the critics > The lights he bought in order to please you cost MONEY! Did the critic pay for those lights? NO! Is the critic paying for this guy's time that he is giving you, after he learned such knowledge he is sharing with you? NO! Did the critic pay for the time this guy used to learn the knowledge he knows? NO! People have to remember that time and knowledge COST MONEY that is always needed for many things such as shelter, food, security, the insurance rackets, government rackets, oil rackets, etc etc etc, in order to survive in this world. Do you PAY for anything in your life? Well everyone else has to pay the same amount as you do. Critics need to appreciate more by realizing people might not have whatever money you critics think they have in order to BUY those lights, a higher quality camera, microphone, computer, time to learn how and edit videos etc.
Pls sir I have cband lnb on my dish that is pointed to 68e Sony package but my signal on my 1.85 metres dish reduce 59 in the morning from 12 and comes back to 63 at 12 in the evening. Pls how can I boost the signal..
thanks for the great info ..
Have you used the cband or Ku band LNBs for radio astronomy? I installed both types, but I hear an AC hum. I powered the LNBs with both 12 VDC batteries and A DC power supply. I found both C-band and KU band LNBs are creating the weird AC hum around 1200 GHZ on my 2 Icom r7000 radios. I used a RTL SDR receiver, but it has a lot of internal spikes. Is the AC hum normal or is the LNBs defective--I guessing the dielectric capacitors have dried out.
Hey Mike. That's an interesting question. Since you tried 12 VDC batteries, I would guess that the AC hum is unlikely to be injected through the voltage rails. This I would guess that dried out caps is likely not the issue. If you have the option to try a different LNB, I'd suggest to try that first.
hello goodnight! A question is it possible to modify the lnb to capture the frequencies of the uhf ISDBT terrestrial digital tv bands from 450 to 860 mhz. mhz .I'm thinking of reusing the common fta receivers dvbs2 hd h264 .as if it were a common terrestrial digital converter.
Hi! No, that frequency range is way to low for any reasonable modifications of a common LNB. That said, your receive range isn't too far away from the receive range of the FTA receivers. So might I suggest to build a classic upconverter? But from what I remember, the terrestrial DVBS and satellite standard have some protocol differences.
Good explain
sir... i have this, C-band LNBF model: PS:1220 17K, i'm just wondering if i could use this as a radio frequency antenna?
if yes, how?
It would be really great if you didn't have it upside down in the first place.
Yep, looks good !
And if you light your selfs from the sides, you also don't get blinded when looking into the camera.
Maybe a LEE or ROSCO filter would do the trick to get the Hollywood effect.
For example: 208 Full C.T. Orange + .6 ND
Converts daylight (6500K) to tungsten (3200K) and reduces light 2 stops.
I want an fm stereo multiplex from scratch
Hey Abou, no, I have not finished it. But since several people have asked, I'll put that on my project list again.
Dude we can see you and hear you fine ….!! For you sharing your valuable knowledge its all good 👍👍👍you making a tech video not a movie ! So dont worry you are good mate 👍👍👍😊
hey #KF5OBS
Your topic love it.. ;)
i have question that is it possible to use c band lnb for (wifi) channels directly with coax cable to the wifi router to recieve signal..?
For my project dude help plZ..!
thanks
Good explain very well
Use a smartphone and the Rode smartlav mic they go for $50 on eBay. Hope this helps!
thank you very much for this great informative video..... :-)
Correct. I falsely spoke of magnetic field but I knew it was the electric field.
Great videos and very informative! I like the deep technical knowledge.
this is the real hain pin:
Wikipedia: Bobby Pin
Only feedback I would give is that higher magnification of the board would be awesome.
Indeed it's very informative.
But all of my LNBs are made of extruded aluminium, can't open them to see what's inside.
Arnab Satapathi
Hi I am a student trying to hook up a LNB C-band to a 5 meter parabolic dish and are trying to analyze the signal using GNU radio I was wondering if you had ever used this and had some insight on how to implement this. Any help would be appericated
GALAXY 16 C BAND GET .FOX NBC ABC CW
ON MY C BAND 10 DISH IN MINNESOTA
C Band still uses in saudi arabia for Arabsat.
No, don't do that.
HI! I am facing in promax HD ranger under voltage warning... Is there any solution for LNB?
useful in Indonesia
Porfa español.
pon en español
Hola cómo estás buenas tardes