Very well presented; Good sound 95% of the time; Great Camera work and angles; Excellent lighting; Good scripting; Excellent pacing; Good content; Very creative. Outstanding Job, Sir!
Thanks! I was too haha I didn't have a any small value surface mount caps laying around so I grabbed that one and it worked! Not gonna question it haha
@@dj-la--wolf1288 yeah maybe your are but after reading for 5 minutes on wikipedia it would require an antenna of at least 1m in diameter. If you can find that in a decent cost range go for it. Also I think the data processing would be a bit more complicated than plugging in an unshielded cable into your oscilloscope.
I once did video, using a timex sinclare computers 70mhz output, into MDS down converter, by injecting the AM video, into the emitter of it's 2.4ghz local osc. There's lots of neat things you can do, re-tasking equipment. Keep up the good work.
What you labeled as an 'edge coupled filter' at 0:55, is not an edge coupled filter, but its called a 'hairpin filter'. Edge coupled (side coupled) filters look like a little staircase. Minor difference, but thought it would be useful to know for anyone who would like to look them up to learn more about them.
Pirate Radio Community in UK Cities used discrete LNB's to create a point-to-point link between tower blocks to separate their studio's from the transmitters back in the day. Got to think of LNB as basically half a radio.
Good work. Ku band is 12-18 GHz. I remember it like this: it's "K-under", because it's "under" 26.5 GHz. Ka is 26.5 - 40 GHz, and I remember that as "K-above" because the band is "above" 26.5.
In satellite, Ku is anywhere from 10 to 12.75 GHz for the downlink - the uplink is between 12 and 18GHz. Seeing as this is a direc tv LNB, it will be receiving in the DSS band from 12.2 - 12.75 GHz with a local oscillator of 11.25GHz
This is a great quick and dirty start to RF electronics! But remember that those microwave circuits around the fets are there for a reason: They impedance match the amps to following stages and the antenna, optimize the gain frequency response, noise figure and linearity. by inverting the fets and biasing them you get something out, but at a very high cost to your link budget if not done properly. Anyhow, cool hack!
I don't really know much about GHz electronics but seeing that the pcb's are special and the capacitors are just precisely shaped traces makes me wonder, doesn't using a graphite pencil to point at the components can potentially change the circuit properties if you were to accidentally smear some graphite on it?
In the 1970s, I serviced Polish speed radars. I had to test them for correctness before they went to the Office of Measures for legalization. For this I used a small loudspeaker without a diaphragm or basket, with foil glued over its voice coil. I remember that I used 905 Hz, which at 10.455 GHz gave an indication of 50 km/h. I didn't come up with this myself. They gave me a tuning fork, but it was uncomfortable. I tested the Polish Mirado, SRD77 and 771, as well as the American K-15.
I believe that with circularly polarised waves the reflected return signal will be the opposite polarisation. Therefore, if you are receiving the signal on the same antenna you are transmitting on, then you may be receiving the signal “cross polar” which would significantly reduce its sensitivity.
Radio Electronics had a DIY radar speed gun. Had a high frequency discrete transistor and some multiplier ckt. (Input x Reflected). If I find the article I'll follow up.
how can you make scalar waves with a radar and how to converge two scalar waves at a certain point? and in the classical train of thought what would occur at the convergence point?
Awesome ! My uncle John would be jealous of your lab then again you would probably Jones for his all his equipment was from the 40s 50s 60s 70s he was a electrical engineer for Edison who moonlighted as a wrestler back in Illinois he was the masked terror and he had a radio show electronics wizard show he would teach you how to build a radio or anything else over the radio.
This is great but I'm trying to build an early warning (air defense) radar for less than the few grand it would cost to buy off the shelf, what do you know?
i am not a electronics guy rather i am an electrical guy. but i found this cool because i am interested in radio transmitter and antennas and somehow youtube made me watch it. i love physics though😅
Nice work, seems you got it going, no small feat at those frequencies. I’m sure if you put your mind to it you’d be able to whip up a down converter on the cheap and get at least some reasonable idea of the output frequency. Probably be able to find some cheap junk equipment on eBay with a decent quality salvage LO mixer IF amp...
you can simply use tuning forks to calibrate this. that's what they use for the older KA band ones used on the highways. here is an online calculator that you can use to fine tune it. copradar.com/chapts/chapt3/ch3d4.html
I think you should not hack old parts, but lay out clear circuits that you design. Make them and teach others globally. There are billions of people now using electronics for most parts of their lives, and they only get the manufactured end results from design teams who go on to other things.
Ok, I'm new to this channel and so far I have no idea what the hell he's talking about. It's all good if you know what hes pointing out but if you dont then you might has well learn mandarin
So you transmit in the frequency of the TV satelite? I guess you make you neighbors very angry. Honestly don't transmit anything if you don't know what you do. For each application there are specific frequencies that you have to use. Those come with tons of regulations how much power you are allowed to transmit, duty cycles etc.. I'm not sure about the law i US, but here it can become extremely expensive if you transmit on wrong frequencies. The case of disturb others TV is by far not the worst thing that can happen. Imagine you transmit on a frequency that is used by a near by airport for the glidepath for landing airplains. Or you block the radio that is used by emergency vehicles to communicate...
Please be careful using this, any form of radiating RF equipment is regulated by the FCC and RADAR is one thing which is highly regulated. Otherwise, this is cool as hell.
Boooooo, let the man play, these rules are meant for companies that mass produce huge quantities of products or for high power applications, sure it’s probably technically illegal, but I’m pretty darn sure nobody is going to bother a young man for experimenting with very low power RF in his own home... keep up the good work...
Fun fact, government BW is regulated by the NTIA as opposed to the FCC in the US, not that he's operating under their jurisdiction, so the FCC is likely the relevant authority. It's possible this device complies as a part 15 subpart C (intentional radiator) home build depending on how low the RF power output is, but no attempt seems to have been made to check. Most researchers I know are wholly ignorant of FCC regs, and no one really gets in trouble for low power experiments. Technically, operating a VNA at -10dBm into an antenna with sufficient gain while checking return loss in CW mode or a narrow enough BW sweep is a crime outside of an anechoic chamber or faraday cage, but frankly the FCC doesn't care. For that matter even the MIT cantenna radar operated in CW is illegal. In FM/CW it's questionably legal under Part 15.247 if confined to the 2400-2480ish MHz ISM allocation.
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
It's wild when you get to the point in your ee career, where you watch a video like this, and know exactly what the person is talking about
Very well presented; Good sound 95% of the time; Great Camera work and angles; Excellent lighting; Good scripting; Excellent pacing; Good content; Very creative. Outstanding Job, Sir!
Awesome project! Very cool.
I'm also amazed you're able to get a 11GHz signal through a through-hole cap!
Thanks! I was too haha I didn't have a any small value surface mount caps laying around so I grabbed that one and it worked! Not gonna question it haha
@@dj-la--wolf1288 lol bro nice troll XD
@@dj-la--wolf1288 yeah maybe your are but after reading for 5 minutes on wikipedia it would require an antenna of at least 1m in diameter. If you can find that in a decent cost range go for it. Also I think the data processing would be a bit more complicated than plugging in an unshielded cable into your oscilloscope.
Former Navy Radar Tech here. Love this project!
I once did video, using a timex sinclare computers 70mhz output, into MDS down converter, by injecting the AM video, into the emitter of it's 2.4ghz local osc. There's lots of neat things you can do, re-tasking equipment. Keep up the good work.
I wonder if you could get good resolution off of a 5 ghz wifi transmitter and receiver?
What you labeled as an 'edge coupled filter' at 0:55, is not an edge coupled filter, but its called a 'hairpin filter'. Edge coupled (side coupled) filters look like a little staircase. Minor difference, but thought it would be useful to know for anyone who would like to look them up to learn more about them.
Pirate Radio Community in UK Cities used discrete LNB's to create a point-to-point link between tower blocks to separate their studio's from the transmitters back in the day. Got to think of LNB as basically half a radio.
Good work. Ku band is 12-18 GHz. I remember it like this: it's "K-under", because it's "under" 26.5 GHz. Ka is 26.5 - 40 GHz, and I remember that as "K-above" because the band is "above" 26.5.
In satellite, Ku is anywhere from 10 to 12.75 GHz for the downlink - the uplink is between 12 and 18GHz. Seeing as this is a direc tv LNB, it will be receiving in the DSS band from 12.2 - 12.75 GHz with a local oscillator of 11.25GHz
Brilliant Sam, never thought of using them for TX!
Cool man once i took apart a remote to replace some batteries. 😅
And in my case it never worked again
This is a great quick and dirty start to RF electronics! But remember that those microwave circuits around the fets are there for a reason: They impedance match the amps to following stages and the antenna, optimize the gain frequency response, noise figure and linearity. by inverting the fets and biasing them you get something out, but at a very high cost to your link budget if not done properly.
Anyhow, cool hack!
I don't really know much about GHz electronics but seeing that the pcb's are special and the capacitors are just precisely shaped traces makes me wonder, doesn't using a graphite pencil to point at the components can potentially change the circuit properties if you were to accidentally smear some graphite on it?
In the 1970s, I serviced Polish speed radars.
I had to test them for correctness before they went to the Office of Measures for legalization.
For this I used a small loudspeaker without a diaphragm or basket, with foil glued over its voice coil.
I remember that I used 905 Hz, which at 10.455 GHz gave an indication of 50 km/h.
I didn't come up with this myself.
They gave me a tuning fork, but it was uncomfortable.
I tested the Polish Mirado, SRD77 and 771, as well as the American K-15.
I believe that with circularly polarised waves the reflected return signal will be the opposite polarisation. Therefore, if you are receiving the signal on the same antenna you are transmitting on, then you may be receiving the signal “cross polar” which would significantly reduce its sensitivity.
The frequencies seem to be in the audible range, that could be interesting to put on a speaker
Dude is freaking smart! Impressive, creative & awesome repurposing!
From what distance it can measure object position. Nice video thanks for sharing.
Radio Electronics had a DIY radar speed gun. Had a high frequency discrete transistor and some multiplier ckt. (Input x Reflected). If I find the article I'll follow up.
how can you make scalar waves with a radar and how to converge two scalar waves at a certain point? and in the classical train of thought what would occur at the convergence point?
Dang, what a cool project!
Imagine if you could make a mini weather radar that detects mist in the air.
Awesome ! My uncle John would be jealous of your lab then again you would probably Jones for his all his equipment was from the 40s 50s 60s 70s he was a electrical engineer for Edison who moonlighted as a wrestler back in Illinois he was the masked terror and he had a radio show electronics wizard show he would teach you how to build a radio or anything else over the radio.
This is great but I'm trying to build an early warning (air defense) radar for less than the few grand it would cost to buy off the shelf, what do you know?
i am not a electronics guy rather i am an electrical guy. but i found this cool because i am interested in radio transmitter and antennas and somehow youtube made me watch it. i love physics though😅
How did you end up remembering 1/25.4 to ten decimal places? You did miss a zero when entering it, though.
Awesome work Mate.....Jeri would be proud
Lost you after “direct tv”....
we transmit pulse signal or siınus signal(pulse radar system or fmcw)?
Something wrong here. You should have a nice big signal and it should be sinusoidal or square wave since your target is so near.
Build me a full spectrum radar lidar speed jammer, how much ?
Nice work, seems you got it going, no small feat at those frequencies. I’m sure if you put your mind to it you’d be able to whip up a down converter on the cheap and get at least some reasonable idea of the output frequency. Probably be able to find some cheap junk equipment on eBay with a decent quality salvage LO mixer IF amp...
neat! Good job!
Thanks
you can simply use tuning forks to calibrate this. that's what they use for the older KA band ones used on the highways. here is an online calculator that you can use to fine tune it. copradar.com/chapts/chapt3/ch3d4.html
Could this be used to measure the range that something is at ?
no
Not sure about DSS LNB’s but normal KU LNB’s LO frequency is 10750
DSS LO is 11.25 as it's shifting 12.2-12.75 down to 950 to 1450. A "normal" FSS lnb has a lo of 10750 as it's shifting 11.7 to 12.2 to 950 to 1450
Best clock ever.
Can radiation hurt you?
Dat clock though :P
you can use a cheap satellite finder to to this radar
Amazing. I'd like to do this myself. Buut it seems still very complicated
For me high frequency stuff is like magic
Build me a jammer how much ?
It's called a water pipe , not a bong. lol
I think you should not hack old parts, but lay out clear circuits that you design. Make them and teach others globally. There are billions of people now using electronics for most parts of their lives, and they only get the manufactured end results from design teams who go on to other things.
Nice
Cool.
Ok, I'm new to this channel and so far I have no idea what the hell he's talking about. It's all good if you know what hes pointing out but if you dont then you might has well learn mandarin
Witchcraft
Bravo.......know make a weather radar.........can u make a radar out of microwave oven......like airplanes......cheerz
Pretty simple... Huh
Now turn it into a jammer.
So you transmit in the frequency of the TV satelite? I guess you make you neighbors very angry.
Honestly don't transmit anything if you don't know what you do. For each application there are specific frequencies that you have to use. Those come with tons of regulations how much power you are allowed to transmit, duty cycles etc.. I'm not sure about the law i US, but here it can become extremely expensive if you transmit on wrong frequencies. The case of disturb others TV is by far not the worst thing that can happen. Imagine you transmit on a frequency that is used by a near by airport for the glidepath for landing airplains. Or you block the radio that is used by emergency vehicles to communicate...
17 inch per second =~ 1 mile per hour.... why bother using hertz, seconds if you use imperial units.
#Jeryellsworth
Please be careful using this, any form of radiating RF equipment is regulated by the FCC and RADAR is one thing which is highly regulated. Otherwise, this is cool as hell.
Comedic Sketches and no one really cares about the regulations either
Boooooo, let the man play, these rules are meant for companies that mass produce huge quantities of products or for high power applications, sure it’s probably technically illegal, but I’m pretty darn sure nobody is going to bother a young man for experimenting with very low power RF in his own home... keep up the good work...
Fun fact, government BW is regulated by the NTIA as opposed to the FCC in the US, not that he's operating under their jurisdiction, so the FCC is likely the relevant authority. It's possible this device complies as a part 15 subpart C (intentional radiator) home build depending on how low the RF power output is, but no attempt seems to have been made to check. Most researchers I know are wholly ignorant of FCC regs, and no one really gets in trouble for low power experiments. Technically, operating a VNA at -10dBm into an antenna with sufficient gain while checking return loss in CW mode or a narrow enough BW sweep is a crime outside of an anechoic chamber or faraday cage, but frankly the FCC doesn't care. For that matter even the MIT cantenna radar operated in CW is illegal. In FM/CW it's questionably legal under Part 15.247 if confined to the 2400-2480ish MHz ISM allocation.