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TheOnLineEngineer
Registrace 6. 09. 2009
Video
Overview of a Television Transmitter
zhlédnutí 38KPřed 11 lety
This was my very first video I made for TheOLE, only there was no TheOLE back in 2009. I just took my camcorder and ran up to the transmitter and shot the footage and then put it all together. To make my self sound more broadcast like I lowered my voice but my wife said I sounded like an undertaker, so I never did that again.
IOT Trouble Shooting
zhlédnutí 8KPřed 11 lety
This video shows how a high voltage problem with an IOT was diagnosed and repaired at a television station transmitter.
Trouble at the Transmitter
zhlédnutí 33KPřed 11 lety
In Trouble at the Transmitter you will follow along with our intrepid engineer as he responds to a late night call informing him his transmitter has gone off the air. As the systems within the transmitter inform him of what the problem is he soon discovers that the real problem lies somewhere else.
Lip Sync NTSC
zhlédnutí 19KPřed 11 lety
This will test if the audio monitor and the video display are in Sync. The tone will sound when the Yellow bar meets the two White bars. The black bars are set 2 frames apart so the offset can be measured.
Transport Stream over IP Demo
zhlédnutí 16KPřed 11 lety
This video show the DecTek TSoIP encoder / decoder pair in use. I plug in a Transport Stream from an over the air professional DTV receiver and transport it over an IP network and then decode it. I check for errors using StreamXpert software, both as an ASI output and directly on the IP network. Sencore lent me the equipment to make this video.
Audio Basics 101
zhlédnutí 10KPřed 11 lety
What is professional audio and how does it work? These questions and more are answered in this video.
VSWR Mystery
zhlédnutí 56KPřed 11 lety
What is causing the transmitter to trip off with VSWR? This video shows what steps the engineer takes to discover the fault.
Analog Video Vertical Sync
zhlédnutí 22KPřed 11 lety
Vertical Sync is used to keep the Fields and Frames of NTSC video in alinement with the horizontal Lines that makeup the composite video signal.
Crowbar Testing
zhlédnutí 22KPřed 11 lety
Crowbars are part of almost every IOT transmitter, here is how they are tested.
Analog Audio Patch Bays
zhlédnutí 17KPřed 11 lety
Audio Patch Bays are used everyday in studios around the world, this video shows how they are used and connected
R.I.P NIKOLA TESLA
Very comprehensive. One observation: it is kHz and not KHz.
I get it. You are matching antenna geometry to a holographic radio image in space to tune the frequency in space. Capacitance, reflectance and phase make space. Excellent video.
Cordless phones
thank you sir
Smahs
This is an EXCELLENT educational video. My only suggestion two 7+ minutes long Parts 1 & 2. Thank you.
I searched through numerous videos looking to understand radio waves and antenna length and by far this is the best video I found. Thank you so much for making this video!!
Wow! Dude mispronounces the word "nuclear" 2:16 that's it, thumbs down
Poor explanation and illustration 1:56 the polarity refers to the electric field only, yet you used the magnetic field color for the vertical to confuse naive viewers.
@9:00 the guys believe it’s going around earth😂 and earlier he said waves can travel thru a vacuum 😂 His watching to much discovery channel
Did the earlier transmitters back in the 40s and 50s also use the 277/480 volt Y service? I've heard some of these earlier systems also used 120/240 volt 3 phase delta systems with a 208 volt high leg usually on the B phase
HeLLO hola coacheLLA
Could you make a vidoe that would shut flat earthers up using your skills and wisdom ? They giving conspiracy theorist like myself a bad name . Side quest find out if they got phaxinated with the doof juice
I am having fits with my punch down. The jacket keeps crushing the sharp pin edge instead of cutting it off. The only solution I have found is to pre-snip the wire on the end and not rely on the cutting edge of the pin. 🫤
I have a couple of questions. The graphics in this video mostly show radio waves travelling in a straight line and the same size. (1) I thought all EM waves propagate through space as a spherical wavefront from the point of source (until are blocked or reflected), hence the inverse square law applied to the strength at a given distance from the source. (2) When a dish antenna is used to improve gain, is the strength of signal concentrated as a cylinder parallel to the antenna, as a cone (in which case how is the cone radius calculated for a given distance), or as a hemisphere? Be warned ... I'm a newbie!
Your proposition (1) is right, but only for point sources as you noted. (2) is more specific and I can't answer whether or not it is correct since I have not studied this type of antenna.
I learned a lot from this video.
Great video! Thank you… ( did you mean ‘particles’ not ‘particals’ ? Spelling? )
Very nicely and detailed demonstrated.
Coll video
Yeesh! Some of these photos show an unacceptably dirty high voltage compartment. Dust is the enemy. This area must be hospital clean. In fact we replaced the input air filters with HEPA grade filters. If you ever see a compartment this dirty, turn the high voltage off, discharge everything with the grounding stick and verify safe, then go get a bunch of lint-free rags and a gallon of denatured alcohol, and get to work. Old t-shirts work well. Clean EVERYTHING including the red and white wires. This will result in less corona and far fewer high voltage trips and crowbar events. Even the skin oils from your fingers are bad. Use alcohol to wipe everything down that you have touched.
Sadly the IOTs and MSDC IOTs are being phased out and replaced with solid state transmitters. This equipment is obsolete even though it could be repaired and rebuilt indefinitely. They were made to be worked on, and the new ones are not. Comark, Thomcast / Thomson, and Thales IOT and IOX transmitters in that time period were the absolute best. They were beasts. The new Doherty solid state transmitters may be more power efficient, but they are not nearly as good. Even comparing logic control systems, compared to the old tried-and-true Allen Bradley PLCs, the Hitachi Comark (Grass Valley) Parallax now uses a Windows 10 mini PC! Yuk. Terrible. You couldn't kill an Allen Bradley with a sledgehammer. And don't get me started on the cooling systems.
What happened to the website? Is it taken down or did the name change? Good video anyways
misleading at best. Thats a horizontal plot. it doesnt include emission in the vertical plane. This ' one plane graph' is the DECEPTION used to sell Yagi antennas. Deliberate deception
The transmitting antenna for radio or TV is usually located on the ground some distance from you, assuming you are on the ground and not up in the air somewhere, so the horizontal gain diagram is the most relevant.
My eyelid is twitching now trying to absorb this🫤
Great explanation. Much obliged.
how much does one of those crowbar testers go for? I found one in my family members storage.
This is a very good explanation of something that most people really don't have a good understanding or grasp of. The world needs more teachers and instructors of this caliber. He was an inspiration to us all!
Look in to what shape the earth is, may come as a shock Mr theonlineEngineer, poor man
good and educational , thank you
Brilliant
annoying guitar breaks
very educative. Thank you Regards
for sure the oil is very healthy on his skin
Thank you so much! In my nightclub I have an IP video distribution system but the sound goes directly into the house sound system from source. This will allow me to adjust the audio delay to match the video. The delay is between 250 and 300 milliseconds.
As has been noted, both tag ends of the sheet bend need to be on the same side of the finished knot; otherwise it is unreliable.
What is name of the song.
This is better than all the ham technician study vids.
It's no coincidence that the dual wave function representing the propagation of RF is almost identical to that of light. Seems that in 1873, Maxwell published his Theases (Maxwells equation) on Electricity and Magnetism, which contained a full mathematical description of the behavior of electric and magnetic fields. Later, Heinrich Hertz confirmed Maxwell's theory experimentally by generating and detecting radio waves in the laboratory and demonstrating that these waves behaved exactly like visible light, exhibiting properties such as reflection, refraction, diffraction and interference. Their collaboration laid the groundwork for the development of radio communications, television and the like..
CHECK OUT THE GROL PATCH ITS NEW
very good video and animation....
I know that noise!
Exelente análise, parabéns.
36 thousand kv💀
It's not 31 thousand Kilovolt but 31 Kilovolt.
Broken drive
I have a technical question concerning the production of the digital TV signal at the front end of the transmitter circuitry. I noticed that 10MHZ GPS timebase signal that the circuitry uses for the timing. What would be the result if, what ever reason, that signal was lost? Would that cause the loss of the transmitter's signal?
Based on other questions asked from years ago , I don't think the creator answers questions.
This is used as a baseline reference for the exciter's pilot frequency generator. If it is lost, it will switch over to an internal frequency generator, which is pretty accurate, but not a NIST-traceable source like GPS. Some stations that used to be adjacent to an analog transmitter on a lower channel were required to have very precise pilot frequencies to keep interference to a minimum. I don't think any of the old requirements apply now, so this would be obsolete. In modern exciters made in the last 5 years, they really don't have any issues keeping the frequency dead on. Only the very early digital exciters really had problems with drift. (You are still required to check it to make sure it is within spec.)
Great!
Wow... I look forward for more videos from you.
thanks of valueable information video tutorial