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🎇✨🎆💥Hello, thanks for your work. Your Video Design is neat, and topics very interesting and well covered. I would like to address some details regarding this video : 1) According to every reference I came across, "RJ-45" is a wrong name for what is actually 8P8C connectors. Of course I know most people use the wrong name, but I think you could consider citing at least once the appropriate name. 2) You present STP Shielded Twisted Pairs as cables for RJ-48 connector, which are used in T1 lines. How come that everyone talks about STP 8P8C (A.K.A. "RJ-45") cables for Ethernet lines, not just T1, including yourself in your own video ruclips.net/video/_NX99ad2FUA/видео.html "Ethernet Cables, UTP vs STP, Straight vs Crossover, CAT 5,5e,6,7,8 Network Cables" ? You seem to contradict yourself! May we know your take on those two points? Keep Up The Good Work! 🖖😀👍
@@philpeko1796 You are wrong about RJ-45. 8P8C is a term used to describe the specific details of the cable standard. The 8P8C stands for 8 Position 8 Contact. Which means 8 wires connecting to 8 conductors. That is why RJ-11 can be also called 4P4C. Although, "ethernet" is a general industry term used to describe network copper cables. RJ-11 is also ethernet and so is RJ-45. Hope this helped :DD
@@jammel3653 This is right, 8P8C is not specific to Ethernet TIA/EIA-568 (T568A and T568B). But what is also right is that "RJ-45" originally refers to a specific wiring configuration of an 8P8C connector, for which a telephone-system-standard RJ45 plug has a key which excludes insertion in an un-keyed 8P8C socket that we all use in Ethernet TIA/EIA-568 cables. The point is that "RJ-45" was already used for specific telephone cabling with keyed-plugs, and it should not have been used for Ethernet TIA/EIA-568 cables. Do we agree? (sources : upload.wikimedia.org/wikipedia/commons/d/d8/8P8C_vs_RJ45_female_connectors.png en.wikipedia.org/wiki/Modular_connector#8P8C )
@@philpeko1796 my why mati? oh like she orange cry hm really 2 like mana i said oh my girl and boy my said why mati what siapa why really marah oh hahaaa?😈👊
I’m 53 yrs old and I decided during this pandemic to learn IT and your videos have been very didactic and so clear that I wouldn’t find in any other IT courses.
RJ48 is NOT! connector type! It is wiring scheme for 8p8c modular connectors (wrongly called RJ45) used in T1 networsk. With STP cables you stil uses 8p8c connectors but with shield. As I mentioned even RJ45 is not equivalent of 8p8c. First is keyed connector, second not. RJ11 is not 4 wire connector! It is 6p (osition). You didn't mention about that BNC were used in data networks 10BASE-2 standard in 50Ohms variant. With A / V signals these are used commonly in 75Ohms version. Next. MT-RJ is designed not for replace SC connector but for duplex fiber connections where you can't use multimode fibers. It is registered what is mean that can not be connected in wrong orientation. There is much, much more mistakes and misconceptions in video.
Very good overall, expect for the last phrase. APC is used in order to have a better return loss, the signal loss or what is formally called insertion loss in usually slightly worse in APC than UPC.
You forgot the most important fiber optic cable of all: Toslink! I kid of course. Toslink is all but obsolete nowadays. It only carries SPDIF and is prone to some issues that only audiophiles understand/care about
Headup for misinformation: RJ-45 connectors comes in 2 types: shielded AND unshielded. The shielded cables in reality do NOT come with a type that has a shield covering 4 unshielded pairs, think about the crosstalk here. Instead all 4 pairs are individually shielded, preventing the signals in each pair to interference each other. Also this kind of shielded cabling is usually only way to build a working Cat6a or Cat8 network (We do not talk about Cat7).
I love your channel. I learn here more than I ever learned at my university. Your content is thorough and simply explained. I hope you keep making videos. And thank you 🤗
Hello Sir, I'm in love with your teaching skills, the animation + your way of teaching is just awesome, super easy to grab. Anyways, This is the very first time I'm making a request to someone on RUclips, *CAN YOU PLEASE UPLOAD A VIDEO on the topic of "OSI MODEL"*, Please? If anyhow you can read my comment and can do it, I'd really appreciate your help.. Thanks and keep doing the great work..😍😊😊
Great education. When using a UTP Coupler for normal distances of, lets say, 50-70 feet, how much is the bandwidth or original specifications impacted? Anyone know or tested?
I'm write this only first time. Thank you youtube's recommendation. Thank you, author, for you work and simply presentation of theory materials. Big respect from Republic of Belarus.
I disagree that mtrj was designed to replace SC connector. The LC has replaced the MTRJ. In fact I recommend that anyone with an MTRJ LAN to replace everything with LC.
WTF this is my 3rd video that I have just watched from this dude and I have learned more than I have from any body else. My question is why the hell did everyone else make this shit sound so fucking complicated but this dude was hell of easy to understand THANK YOU
Hi, Fibre (Fiber) connectors are all highly polished and thus will reflect light, reflectance. PC means physical contact and UPC is Ultra polished physical contact. The reason we use the 8 degree angled physical contact connectors is for high power LASER networks. A standard PC or UPC will reflect too much light back in to the LASER that can upset data transmission symbols and cook the LASER which is already running very hot. But the APC allows the majority of the light through and any reflected light is directed in to the cladding and then the buffer but does not make it back to the LASER. Hope that helps.
Why does STP require a different connector than UTP? Two videos ago in the playlist ("Ethernet Cables, UTP vs STP, Straight vs Crossover, CAT 5,5e,6,7,8 Network Cables") it was sort of implied that the only difference was the shielding and that the wires are the same.
Probably should include the TIA-568 wiring, too. 8P8C is used many different ways. RJ45 and RJ48 are totally obscure and obsolete standards with resistors and 8P4C. Not synonymous with UTP nor STP.
I really like your videos, keep up the good work! In video connector and USB videos you really helped me. I finally know what sort of cables are on my 2012 laptop! =)
Where fibre optics is concerned, you are wrong in so many ways. For example, the MTRJ is not becoming increasingly popular, it is old hat. I suspect you are confusing it with the MPO connector. As for the ST being commonly used with singlemode fibre, you are completely wrong. Yes, there were singlemode versions back in the day', but these were few and far between with this dinosaur, which pre-dates all the other connectors you mention. The ST is a multimode connector at best! As for the 'couplers' versus 'adaptors' comment, they are the same. You are confusing the purpose with 'hybrid' adaptors, which couple different connector types. Finally, UPC polished connectors are not flat polished, they have a radius polish, as do APC. There is little or no improvement of insertion loss (IL) between the two types, it is the reflectance (RL) that is reduced with APC, which has the tangent from the core centre shifted by 8 degrees. By the way, the fibre core is surrounded by the cladding, not a 'wall'.
Do you do any videos where you're not just literally reading from Wikipedia? BNC connectors are widely used by ISPs delivering fibre based internet where the "last mile" uses legacy HFC cable, or where the connection is delivered via satellite or fixed wireless. BNC is also widely used by cable television providers. Cable television is technically a centralised data network, and the cable into the television can be overridden to access the internet (if you know what you're doing). I stopped watching after you bungled the BNC connector. History tells me that you'll bungle up about 35% of the information in your video because you're just reading from Wikipedia.
I was actually looking forward to [USB-A - USB-A]-type cable to network computers [USB - Wifi] and [USB - Ethernet] are not really networking cables like rj-45 at least as a pedantic technicality. In those cases USB connects to a "device" that then connects to the network it is not a direct connection. I hope that makes sense.
@@gljames24 Correct, but there are special USB-A to USB-A Cables with a PCB in the middle. I belive they are called "USB Transfer Cables" but I have no clue how they work. I just know they exist
Thank you I think we can shall may vphv understand the importance truth and value of electrical power wiring arrangement of network how ethernet cables work and use uniformly or amplitude balancing methods to produce fine networks....thank you
Hi Sir ...I would like to ask you regarding a Peculiar type of Optic Fibre connection to Home I have to post 2 or 3 photos If only you could give your e-mail
Thank You very much for such an informative Video, but I can't listen clearly the Complete Name of BNC connector. Please write the name of BNC connector in video. Thank you very much
Do a video about video cables if you haven’t already. Great vid! Also, a video about obsolete cable types such as PS/2, parallel, 9 pin, and those random ones you hardly see anymore nowadays due to newer formats.
RJ45 is also used with STP not just UTP. Glad you didn't cover all the fibre connectors as that a damn minefield, the industry is a complete mess with almost every company releasing their own standards just slightly different from everyone else. Requiring new disgustingly expensive gear to use, its almost as if they want to milk cash from just a few that can afford it. Why they don't settle on a few standards and sell them cheaper to many more people I don't know.
I still don't know why you don't teach a class. You're more than qualified to design a Networking Computer Course, we're ready to be part of it and support with finances. Please give it a thought, we'll wait for your feedback.
Did you know Home Depot and Lowes don't know the BNC male only uses a BNC female? They only sell the male, which cannot be used to connect to any other connector. I have talked with corporate many times on this issue and they still don't get it. The BNC is great for radio astronomy antenna connections and many other locking connections.
found a bug (push-pull connection vs pull-pull connection: one thing said another written) Great videos! Can't stop looking through all of them. Very Educational.
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🎇✨🎆💥Hello, thanks for your work. Your Video Design is neat, and topics very interesting and well covered. I would like to address some details regarding this video :
1) According to every reference I came across, "RJ-45" is a wrong name for what is actually 8P8C connectors. Of course I know most people use the wrong name, but I think you could consider citing at least once the appropriate name.
2) You present STP Shielded Twisted Pairs as cables for RJ-48 connector, which are used in T1 lines. How come that everyone talks about STP 8P8C (A.K.A. "RJ-45") cables for Ethernet lines, not just T1, including yourself in your own video ruclips.net/video/_NX99ad2FUA/видео.html "Ethernet Cables, UTP vs STP, Straight vs Crossover, CAT 5,5e,6,7,8 Network Cables" ? You seem to contradict yourself!
May we know your take on those two points? Keep Up The Good Work! 🖖😀👍
@@philpeko1796 You are wrong about RJ-45. 8P8C is a term used to describe the specific details of the cable standard. The 8P8C stands for 8 Position 8 Contact. Which means 8 wires connecting to 8 conductors. That is why RJ-11 can be also called 4P4C. Although, "ethernet" is a general industry term used to describe network copper cables. RJ-11 is also ethernet and so is RJ-45. Hope this helped :DD
@@jammel3653 This is right, 8P8C is not specific to Ethernet TIA/EIA-568 (T568A and T568B). But what is also right is that "RJ-45" originally refers to a specific wiring configuration of an 8P8C connector, for which a telephone-system-standard RJ45 plug has a key which excludes insertion in an un-keyed 8P8C socket that we all use in Ethernet TIA/EIA-568 cables. The point is that "RJ-45" was already used for specific telephone cabling with keyed-plugs, and it should not have been used for Ethernet TIA/EIA-568 cables. Do we agree? (sources : upload.wikimedia.org/wikipedia/commons/d/d8/8P8C_vs_RJ45_female_connectors.png en.wikipedia.org/wiki/Modular_connector#8P8C )
my why mati? oh like she orange cry hm really 2 like mana i said oh my girl and boy my said why mati what siapa why really marah oh hahaaa?😈👊
@@philpeko1796 my why mati? oh like she orange cry hm really 2 like mana i said oh my girl and boy my said why mati what siapa why really marah oh hahaaa?😈👊
The legend is back.
only has been 4 months, working on this video and maybe even taking a little break
come soon ， cool！
the myth , the man , the legend ...
Yes
And in 16:9 HD!
Some of the best quality content on RUclips right here. Nice to see you post another video mate!
I’m 53 yrs old and I decided during this pandemic to learn IT and your videos have been very didactic and so clear that I wouldn’t find in any other IT courses.
At 52 during the pandemic, I did the same thing.
true
I lost a pandemic opportunity to learn skills 😢 now struggling for interviews
I start watching videos from this channel like Netflix series, one video after the other. Very good!
Glad you like them!
Me too!
Same here
Thank you so much for all the time and effort that you put into all of your videos. They are quite helpful!
These animations are awesome.
140 dislikes probably have a general problem with connecting.
RJ48 is NOT! connector type! It is wiring scheme for 8p8c modular connectors (wrongly called RJ45) used in T1 networsk. With STP cables you stil uses 8p8c connectors but with shield. As I mentioned even RJ45 is not equivalent of 8p8c. First is keyed connector, second not. RJ11 is not 4 wire connector! It is 6p (osition). You didn't mention about that BNC were used in data networks 10BASE-2 standard in 50Ohms variant. With A / V signals these are used commonly in 75Ohms version. Next. MT-RJ is designed not for replace SC connector but for duplex fiber connections where you can't use multimode fibers. It is registered what is mean that can not be connected in wrong orientation. There is much, much more mistakes and misconceptions in video.
Most accurate explanation ever
oh wow youre here
Very good overall, expect for the last phrase. APC is used in order to have a better return loss, the signal loss or what is formally called insertion loss in usually slightly worse in APC than UPC.
@@vladulescuadrian6080 what does UPC and APC stand for i coudlnot find on the video nether google
@@leto1449 UPC = Ultra Physical Contact / APC = Angled physical contact
ofc its you again...
You sir, is the reason why I'm Net + certified. Thank you so much for your well explained videos!
He is the master, isn't he.
Did you use anything other than this channel and the study material?
@@body46 these videos as well as reading the net + exam cram book
@@tannerfedorko12 ok thanks. I have the network+ study material and tests so i hope im singing your tun in 3 months
Nice video you should start doing best settings videos too, you are one of the few on youtube that actually knows their stuff.
I learned quite a lot. Your videos are one of the most highly explanatory and easy understood videos on RUclips when it comes to IT
Clicked the notification without even thinking twice as soon as I received it..
These are great. 100% content with no frills or filler.
The power point legend!
You forgot the most important fiber optic cable of all: Toslink!
I kid of course. Toslink is all but obsolete nowadays. It only carries SPDIF and is prone to some issues that only audiophiles understand/care about
Toslink: The Single Consumer Fiber Optic Standard
Hence why it's made with cheap plastic fiber and not glass fiber. :D
Headup for misinformation: RJ-45 connectors comes in 2 types: shielded AND unshielded. The shielded cables in reality do NOT come with a type that has a shield covering 4 unshielded pairs, think about the crosstalk here. Instead all 4 pairs are individually shielded, preventing the signals in each pair to interference each other. Also this kind of shielded cabling is usually only way to build a working Cat6a or Cat8 network (We do not talk about Cat7).
How do you make such videos? I wanna learn too.
Your teaching is very extraordinary, Sir.
I love your channel. I learn here more than I ever learned at my university. Your content is thorough and simply explained. I hope you keep making videos. And thank you 🤗
I ALSO
In our country not having F-type or BNC meant no TV at all
Hello Sir, I'm in love with your teaching skills, the animation + your way of teaching is just awesome, super easy to grab.
Anyways, This is the very first time I'm making a request to someone on RUclips, *CAN YOU PLEASE UPLOAD A VIDEO on the topic of "OSI MODEL"*, Please?
If anyhow you can read my comment and can do it, I'd really appreciate your help..
Thanks and keep doing the great work..😍😊😊
Great education. When using a UTP Coupler for normal distances of, lets say, 50-70 feet, how much is the bandwidth or original specifications impacted? Anyone know or tested?
I'm write this only first time. Thank you youtube's recommendation.
Thank you, author, for you work and simply presentation of theory materials.
Big respect from Republic of Belarus.
Make patron i want to donate and support channel, second time you help me to get a job. Thanks again!
Great explanation and clear animations. Solid sound quality and texts without errors or jokes.
You should also mention the MPO fibre connector as it's becoming more popular now in 25/40/50/100G applications
I disagree that mtrj was designed to replace SC connector. The LC has replaced the MTRJ. In fact I recommend that anyone with an MTRJ LAN to replace everything with LC.
Sir, please tell me the name of the software you have used for your videos animation.
WTF this is my 3rd video that I have just watched from this dude and I have learned more than I have from any body else. My question is why the hell did everyone else make this shit sound so fucking complicated but this dude was hell of easy to understand THANK YOU
mY GOD...THIS WAS A LOT OF WORK...CONGRATULATIONS!!!
Hi, Fibre (Fiber) connectors are all highly polished and thus will reflect light, reflectance. PC means physical contact and UPC is Ultra polished physical contact. The reason we use the 8 degree angled physical contact connectors is for high power LASER networks. A standard PC or UPC will reflect too much light back in to the LASER that can upset data transmission symbols and cook the LASER which is already running very hot. But the APC allows the majority of the light through and any reflected light is directed in to the cladding and then the buffer but does not make it back to the LASER. Hope that helps.
Why does STP require a different connector than UTP? Two videos ago in the playlist ("Ethernet Cables, UTP vs STP, Straight vs Crossover, CAT 5,5e,6,7,8 Network Cables") it was sort of implied that the only difference was the shielding and that the wires are the same.
Dr.Ibrahim স্যার এর সকল আলোচনা আমাদের ইউটিউব চ্যানেলে আপলোড দেয়া হয় চাইলে আমাদের ইউটিউব চেনেল ঘুরে আসতে পারেন J tv 24
i dont speak hindi
@@pintawahyuni8327 thanks for fid back
Ethernet connectors are often called RJ45, though they're official 8P8C. They look much alike, but are different in practice.
Probably should include the TIA-568 wiring, too. 8P8C is used many different ways.
RJ45 and RJ48 are totally obscure and obsolete standards with resistors and 8P4C. Not synonymous with UTP nor STP.
I'm tired of telling this to people. They just don't care.
From Bangladesh 🇧🇩🇧🇩🇧🇩
3:35 cable is remarkable for me. Because of it, I experienced lots of electric grounding behind our tv.
I am doin a Telecomm degree. Your channel has assisted me in the greatest way for the past 2 years
I really like your videos, keep up the good work! In video connector and USB videos you really helped me. I finally know what sort of cables are on my 2012 laptop! =)
Please! Can you do some videos about "Ethical Hacking"?
1:24 and breaks every 10th time you use it.
Good Lord you have a knack for teaching. Don't stop. Liked and subbed.
i like your videos! keep it up! is helpful and appreciated brother :D
Great teaching! Great animation! Your videos are the bestest!! Thank you very much!!!!
Your videos are very helpful.. Thanks for this type of videos
this is one of the most annoying thing humans have don't phones shouldn't have 100 different types of connectors for the same task
Welcome back we have been waiting you for a long time.
Where fibre optics is concerned, you are wrong in so many ways. For example, the MTRJ is not becoming increasingly popular, it is old hat. I suspect you are confusing it with the MPO connector. As for the ST being commonly used with singlemode fibre, you are completely wrong. Yes, there were singlemode versions back in the day', but these were few and far between with this dinosaur, which pre-dates all the other connectors you mention. The ST is a multimode connector at best! As for the 'couplers' versus 'adaptors' comment, they are the same. You are confusing the purpose with 'hybrid' adaptors, which couple different connector types. Finally, UPC polished connectors are not flat polished, they have a radius polish, as do APC. There is little or no improvement of insertion loss (IL) between the two types, it is the reflectance (RL) that is reduced with APC, which has the tangent from the core centre shifted by 8 degrees. By the way, the fibre core is surrounded by the cladding, not a 'wall'.
Do you do any videos where you're not just literally reading from Wikipedia?
BNC connectors are widely used by ISPs delivering fibre based internet where the "last mile" uses legacy HFC cable, or where the connection is delivered via satellite or fixed wireless.
BNC is also widely used by cable television providers. Cable television is technically a centralised data network, and the cable into the television can be overridden to access the internet (if you know what you're doing).
I stopped watching after you bungled the BNC connector. History tells me that you'll bungle up about 35% of the information in your video because you're just reading from Wikipedia.
Wow that is very knowledgeable!!👍🏻👍🏻
Your videos are amazing man!
KEEP IT UP!!
Great video again, thanks!
Quick comment on 5:36, you say "push-pull connector" but write "pull-pull connector".
Many thanks and see you next time.
you are welcome
Greeting Im a retired AT&T Service Tech trying to Reuse the old phone jacks in my home! Looking for a patch cord RJ11C / USB-C to charge my cell!
good show my man!
I've been waiting for a video like this
thanks, i needed this, im so confused on how isp installs their internet connections
I was actually looking forward to [USB-A - USB-A]-type cable to network computers [USB - Wifi] and [USB - Ethernet] are not really networking cables like rj-45 at least as a pedantic technicality. In those cases USB connects to a "device" that then connects to the network it is not a direct connection. I hope that makes sense.
Do you mean USB C. Using a USB A to USB A would short the connector which is why we have USB B.
@@gljames24 Correct, but there are special USB-A to USB-A Cables with a PCB in the middle. I belive they are called "USB Transfer Cables" but I have no clue how they work. I just know they exist
Actually USB isn't a ethernet connector. its just used instead of PCI to connect NIC to motherboard. No any network technology using USB as a cable.
In europe you dont use UTP cables anymore. Only STP or S/FTP. But still with RJ45 connectors.
You know it's a good day when PowerCert Animated Videos
.
Thank you I think we can shall may vphv understand the importance truth and value of electrical power wiring arrangement of network how ethernet cables work and use uniformly or amplitude balancing methods to produce fine networks....thank you
Because of Aqua Teen Hunger Force, I will always see BNC as "Brushed Nickel Colander" before I see it as "Bayonet Neill-Concelman"
Hi Sir ...I would like to ask you regarding a Peculiar type of Optic Fibre connection to Home
I have to post 2 or 3 photos
If only you could give your e-mail
It is super basic. I guess. Like RJ45 has like 20 different types if your look closely. It is not even called RJ45 really.
"BECAUSE universal is in its name it can be used...."? LOL! No, that's NOT the reason but, ehhhh...
I’m still missing coaxial & fiber optic & bnc & usb wireless adapter & usb to Ethernet & coupler & the other fiber optic
Very interesting video 👍! As a fellow RUclipsr, I am always looking for new ideas! Great Job!
I finally get UPC vs APC now.. Read it in my textbook but couldn't comprehend it😅
In UPC, please explain how signal loss occurs if the light reflects back towards light source
Super helpful! Love it. Thank you.
Thanks for this great video-explanation, keep doing this surely educational again thanks and kind regards.
04 am and I'm watching a video of cables
Video is the bad... Someone this problem black background English used back side not show
Very Thanks you your help and we need more explain about network especially lab how to connect all network , I say mere thank sir
please try to upload more videos about networking because you guy give easy explanation that could easily understand
2:55 Every time I open a door to a room Ive never been in, at the school I work at, you can be sure to find the ol'BNC wired in there,
Thank You very much for such an informative Video, but I can't listen clearly the Complete Name of BNC connector. Please write the name of BNC connector in video. Thank you very much
Dose the chip store, and have web cam Bluetooth Data?, recorded from on camera to computer, dose it save to video on the chip too?.
Do a video about video cables if you haven’t already. Great vid!
Also, a video about obsolete cable types such as PS/2, parallel, 9 pin, and those random ones you hardly see anymore nowadays due to newer formats.
LOl I still use Ps/2 and sometimes parallel.
isn't the rj11 the cable from phone to handset and the rj12 from phone to wall or modem to wall?
I'm a PC user, but I await for you to cover the parts made by Apple for its Mac computers.
a thumbs up but keep in mind that in Europe dsl connection comes with rj45 not coaxial
Question though:
Do RJ45 and RJ48 use the same LAN port?
Beautifully explained and so easy to follow. Gratitude and well done!
лайк тебе. хорошо и не спеша рассказывает мужик. не поймёт только ленивый и тупой. делай побольше.
I fucking love your super simple awsome videos super informative
The RJ 11 was used on the original Macintosh keyboard
Good... but a small mistake *pull-pull
Thank you so much sir for your packaged information.
5:42, pull-pull typo, it's supposed to be push-pull
Dude love your vids, keep it up man!
Can you make a video about how to connect Ethernet in different ways to connect tv📺
Thanks for coming back 👍
wow this was wonderful sir thank you and we really need your support and help please continue and keep posting
I am glad the days of Cross over and straight through RJ-45 cables are things of the distant past.
RJ45 is also used with STP not just UTP.
Glad you didn't cover all the fibre connectors as that a damn minefield, the industry is a complete mess with almost every company releasing their own standards just slightly different from everyone else. Requiring new disgustingly expensive gear to use, its almost as if they want to milk cash from just a few that can afford it. Why they don't settle on a few standards and sell them cheaper to many more people I don't know.
Finally, some good fucking video
wifi must be faster than a copper network cable but it isnt faster coper cable is faster
I still don't know why you don't teach a class. You're more than qualified to design a Networking Computer Course, we're ready to be part of it and support with finances. Please give it a thought, we'll wait for your feedback.
Did you know Home Depot and Lowes don't know the BNC male only uses a BNC female? They only sell the male, which cannot be used to connect to any other connector.
I have talked with corporate many times on this issue and they still don't get it.
The BNC is great for radio astronomy antenna connections and many other locking connections.
found a bug (push-pull connection vs pull-pull connection: one thing said another written) Great videos! Can't stop looking through all of them. Very Educational.
Great brother you explain it very well