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SPAUN SVEC New Satellites News: Satellites Transmissions News: Digital Terrestrial Television Digital Terrestrial TV Handbook SatcoDX Satellite Handbook Heinz Koppitz Actually, the motor is not to blame.

Dish motors of major brands are generally state-of-the-art and sport the DiSEqC 1. This means we need to look elsewhere to identify the problem, which mostly lies in the supply voltage provided by the receiver to the LNB.

We have to bear in mind that this power supply was implemented in receivers long before there was even any talk of DiSEqC-based dish motors and it was never designed for any additional current consumers.

Case 1 — The dish motor only moves slowly at times. If your dish motor sometimes moves too slowly conventional switching technology is the culprit.

For reasons of compatibility switching the LNB from horizontal to vertical reception still takes place with changing the supply voltage from 18 V to 14 V.

Reduced voltage automatically results in reduced motor movement. Unfortunately, such LNBs do not — yet — exist. Case 2 — The dish motor does not move continuously and stops in between.

If your dish motor judders this is a clear indication of receiver overload. Many Dish Motor receivers have a maximum current output of mA, which is on the low side for a motorised dish system. Workaround: A smaller and therefore lighter antenna often does the trick. In some cases, however, only a new receiver with a current output of more than mA will help alleviate this problem. On most receivers the maximum output is indicated on the back panel next to the coax socket.

Case 3 — The receiver freezes when it is switched on and the dish motor never starts moving. This happens with receivers which not only have a current output of less than mA, but which also react too sensitively whenever current peaks occur. During the booting process the dish motor also activates right away and consumes a short but powerful current pulse which causes these receivers to abort booting.

Workaround: The only thing that really makes sense is exchanging your receiver for another model. While this gadget is originally designed for DiSEqC 1. A motorised dish can quickly turn from blessing to nuisance if the antenna rotates too slowly or starts to judder when large angles are covered.

When worse comes to worst the motor might even get stuck, causing the receiver to freeze as a consequence. TELE-satellite World www. Free, TV Radio. BCPC 1. Interestingly enough, even for average Joe the situation gradually changes due to two or more satellites being positioned very closely to each other. In Europe it had long been possible to receive almost all satellites with a single multi-LNB antenna. However, many satellites with footprints across Europe are now spaced only one or two degrees apart and therefore cannot all be received with a multiLNB antenna, which in general requires a minimum spacing of three degrees.

Circuit board for motor control at the heart of the Fibo Box. Shown here is series 1, which was designed for controlling the antenna rotation In the golden days, many analog receivers came with integrated motor control.

Granted, the number of available satellites was rather limited back then, but on the other hand reception equipment usually carried a hefty price tag, so for many satellite enthusiasts it made perfect sense to have a single dish and LNB that could be rotated with the help of a motor. Technology progressed, as it always does, and when we arrived at the digital age the number of satellites sprinkling our skies had increased enormously, while at the same time satellite equipment had become much more affordable.

In addition, many households have begun to use more than one satellite receiver, so multi-LNB antennas and multi-switches are now signs of the modern satellite era. The transformer for the motor, the circuit board with the motor switch-off relay and the actuator for elevation adjustment are clearly visible.

Ron even implemented an AGC control, whose socket is located on the upper right corner of the front panel. In the background you can see the motor with attached actuator. Right in the middle Ron himself holds the servo motor device for the LNB skew. You can either decide to install a second multi-LNB dish on the roof or you may think back to a time when some receivers came fully equipped with a motor control feature that allowed to select each satellite individually and directly.

For instance, they might like to connect a second blind scan receiver, which is why Ron devised a very special solution: Motor control that is independent of a manual control box, but rather works semi-automatically via PC. So with these features alone we arrive at three separate motor controls: azimuth i. East to West movement of the dish , elevation i. Based on this general concept, Ron has developed a circuit plus corresponding software that controls all three motors.

Right now Ron is contemplating adding a fourth motor control to his Fibo Box. While there really is only one optimum distance for LNB mounting, many feed hunters would still appreciate the additional room for manoevering. Software for controlling the Fibo Box, also developed by Ron Eberson: Motor control visible in the image to the left.

The desired satellite can be chosen from a list and the PosKalk application see image calculates azimuth, elevation and LNB skew based on the actual geographic location of the antenna. The application shown on the upper right then takes care of controlling the motor. This application can be set for the Fibo Box to re-adjust all positions in certain intervals, such as each second or every third second. Satellites located in inclined orbit require permanent tracking.

In the lower right section you can see a TV viewer software which allows watching the currently received signal and creating screen shots.

Of course, Ron is working on integrating all these applications into a single software solution so that all processes are performed fully automatically. Tragically, however, not all is bright on this day and for one man August 8 was the day he drowned while trying to rescue a child that had fallen into the Yellow River.

Wang Fend died helping another person. Juan is a small and poor place without a railway line or large buildings. A door showed the way into the courtyard where three satellite antennas caught our attention right away.

We stood there amazed and shocked at the same time. A man as intelligent as Wang Fend had been living in a place as scarce and run down as that, with an ancient TV set and a primitive stereo system. We realised that Rock Ke had only focused on his hobbies, namely rock music and satellite TV reception.

Rock Ke has a son who attends primary school in town. A small boy who all of a sudden lost his Dad. Satellite enthusiasts from all over China are mourning this tragic loss. To them, Rock Ke is nothing less than a hero and a role model. Being faced with all this we too decided to offer some help and gave At the same time we initiated a charity campaign, which so far has received some messages of condolence and support via Internet forums and SMS.

We have been able to collect numerous additional donations so that a total of Please, remember to notify us about your donation at: webmaster aluo-sat. W3B will be dedicated almost exclusively to the thriving Central and Eastern European market while doubling available capacity, from 27 to 56 transponders, 53 in Ku-band and 3 in Ka-band.

It will be based on Spacebus C3 platform and have an operational lifetime of 15 years. It will also provide interconnection with Europe through a combination of European Ka-band and African Ku-band frequencies. Its width with deployed solar panels will be 34 m. This K10K-engine satellite with SPT stationary plasma thrusters will have a launch mass of kg, payload weight of kg and nominal power of 1.

Air Force on this satellite. This next-generation infrared sensor system is of crucial importance for reducing technology risk for the Third Generation Infrared Surveillance system known as 3GIRS. It will have a launch mass of kg and a lifetime of 15 years.

The partners have now introduced 3D events in 40 cinemas throughout Italy, which has now the biggest European network of this type. Canal Digitaal has a total of six transponders on Astra providing services to over , DTH subscribers. The satellite will have 20 transponders to be leased out to foreign clients. A backup satellite will be launched in Currently Ukraine uses telecommunication services of foreign satellites Sirius, Astra, Amos, and Hotbird.

Echostar is taking all of the capacity on Nimiq 5. Its location in a geostationary orbit position at 96 degrees west. The latest projection forecasts the HDTV set market will pick up in the second half of the year and continue advancing into with total sales this year reaching 29 million units, up 2.

Amazonas 2 is the fourth satellite to be built by Astrium for Hispasat. Amazonas 2 will operate 54 in the Ku band and 10 in the C band. The United Nations pledged to provide Bolivia with technical help on orbital positions and frequency bands. The satellite will likely be launched from Baikonur Cosmodrome in Kazakhstan. Azerbaijan intends to use about Edited by.

The launching complex was approved by the State Council and the CPC central military committee in to launch large non-toxic and pollution-free rockets. It should be completed and put into operation in This is the fourth launching site in China, along with three sites in Jiuquan, Taiyuan and Xichang. The spacecraft will be equipped with 28 C-band and 28 Ku-band transponders.

The satellite had conducted a number of orbit manoeuvres in order to get into the right orbit, and was in normal state, according to ThalesAlenia Space. The Palapa D satellite, owned by Indonesian satellite communications company Indosat, was supposed to provide satellite links and broadcasting services for Indonesia and other south-eastern Asian nations. China will also build a satellite control centre. No date was given for the launch. China has agreed to fund the project through a soft loan with low mark up for a period of 20 years.

It will have 30 transponders, 18 in the Ku-band and 12 in C-band. Financial details of the contract were not disclosed. NEWS that is going to expire. An industry source added the unit was not functioning well in its current orbital slot because of interference from other satellites. The contract will see ViaSat supply operations and maintenance for the YahClick satellite broadband service as well as the installation of four broadband gateways and a network control centre.

Now the bad. It's big, and expensive for a limited range consumer zoom. Now this isn't specific to just this lens, but a number of the new Z mount lenses. They are bland looking. They remind me of an Ikea air purifier or a Glock pistol. Purposely shapeless. Now Glock and Ikea are wildly popular so it just might be my taste. I prefer the old F mount newer lenses look. They looked like medical equipment or precise, not monolithic modern understatements.

This is an interesting focal range. Further development resulted in the and eventually the Who cares if it's a souped up Tamron? In its day, the old Nikon DX was considered a wonderful bargain especially the VR version and it was a souped up version of the Tamron which was also marketed by Ritz Camera as a Quantaray It becomes more intriguing as a studio zoom on the DX cameras, where it becomes the equivalent of a It's a constant 2.

What do you want exactly? What other 2. I Think or it's becoming popular for the size and lower prices. Alos constant 2. I will go back to Nikon when they develop the 5.

I know they can do it like they did the F5. I think, it's a funny time nowadays. So i can say at the end, it's really funny - because i've thought already into , it's nothing new! Albeit not F2. I was okay with this until the tamron connection left me deflated. Bit of a disappointment. I can't tell well enough but that's absolutely not the same on the right half of the elements. At any rate, I'm sure it'll be a very good lens that won't tread on the S version and will have its perks over the less expensive bunch.

Apparently the optical diagram shown at that link for the Tamron is for the newer G2 lens, not the original version that the Nikon is rumored to be based on. That's a very odd article, including the optical diagram from the G2 lens and saying that lots of the details aren't specified, when they're all on Tamron's website.

The published MTF charts aren't literally indentical but they're exceedingly close to it. Thanks Richard. Richard Please! When it comes out do a side by side shootout of the Nikon one and the Tamron one to see if they perform the same!

Optical formula may be the same but the coatings especially the rear element's may be different. But the chips for the electronics may be completely different, they may be the same as used in other Nikon Z lenses due to different requirements for firmware and possibly lens motors, remember the Lens for Sony is only required to shoot at 15fps but with the Nikon that becomes and fps.

One thing, that i do find personally odd, you've got to see this i've posted it ago when it was released. If it would have bad corners like the Tamron G1. Corners F8 G1 vs G2 F2. As one could see, that's dramatic.

If the Nikkor is based on G1, with that bad corners, good night. It would come at least 3 years too late. Since the Nikkor is a different Lens design, and not a clone of the Tamron Lens, i have better hopes for it's corner performance. But, the price is really too steep. Nikon should sell it for EUR max. See the point? And this all for EUR! No bashing. I love Nikon. The article was updated and they admitted they were wrong.

Also it looks like Nikon went lazy on the MTF charts and just drew some gentle sloping lines to look like Tamrons. The lens placement, design, and elements are the same between the two lenses G1 Tamron, Nikon. Yes, before it was different. So if it's the same Tamron G1, one would have to stop down to F8, see the sample i posted way earlier - to get good corner performance.

The funny part is - Tamrons new G2 is already at open aperture that sharp into the Corners, the proof from Richard Wong sample snippet, posted above. Great Deal for Tamron - sell Nikon their old Lens Design, and Nikon does have to pay much license cost perhaps, anyway. Sony users here have anyway the better Lens Design via Tamron G2, and pay much less, whileas Nikon Users get the same old wine in new bottles, and i guess Tamron wins again, Nikon pays for the old Lens Design, and Z-users won't get the latest G2 IQ yet, sorry - it's idiocratic!

If it was an S lens, it would cost the same as the current S 2. Why would any brand have an equally priced 2. I think what Richard means he wants the S lens performance like the 2.

Unfortunately, that doesn't work. You want the quality, you're going to have the pay the price. For some people this is more than welcome -- a great contender for the 2.

Despite this not being an S-lens, and me being an enthusiast, if it had been released a year ago when i got my 2. Certainly this would NOT deliver the same output as the 2. But for the cost and it's paper specs at least which is all we have to go by for now , it's probably a good lens. I like the slightly extra reach at the longer end. Edward I was a tall man for his era, at 6 ft 2 in 1. We'll set aside the fact that MTF charts are really only specific to individual brands and that comparing across brands is flawed; since that alone disproves the "The MTF charts are identical" argument.

But the differences do point to the fact that when a brand licenses another manufacturer to produce product from them they can insist on component changes or higher quality control standards on the re-branded model.

Not to mention the benefits of having the actual camera manufacturer making the software and firmware of the lens compatible with their bodies. I'd love to see Chris and Jordan compare this new 2. Just to see how similar or different they are. I doubt Nikon is going to reveal any details; maybe doing a side by side comparison we can gain a little insight into what happens behind the scenes when a company has a third party make rebranded lenses for them.

The lens element design and focusing distances are identical to the older Tamron mm. It's the same optical formula with a Nikon badge and price markup. True, but there could still be differences, there is more to a lens than it's lens element equation. Maybe Nikon is demanding more quality control of the whole lens.

Maybe Nikon re-did the firmware of the lens to pair natively with their cameras. Maybe they swapped the glass Tamron used with glass they manufacture making little glass disks is their main industry after all. Maybe the Tamron was already using nikon elements? Maybe they changed the lens coatings to their coatings. There's still a lot of questions, and so many people speaking with certainty of how the as yet non-existent lenses are built based purely off a pre-release announcement.

It's like when people say "Nikon just uses Sony sensors" then the Nikon versions outperform their supposed Sony equivalents in DxOMark measurements. If it's the same thing why does it perform better in a Nikon body? Perhaps because there is more to camera and lens design than spec sheet numbers. The lens charts by each manufacturer are theoretical MTFs. They're not affected by quality control in manufacturing.

However, it's not a given that Tamron and Nikon use identical models to predict MTF so there could be methodological differences. I don't know about this, maybe if the G2 version was released for Z-Mount instead, it might have been tempting for me to switch systems.

Wouldn't it make more sense for Tamron and Nikon to rebrand the G2 version, isn't the original discontinued? It all depends on how it performs of course. But expecting it performs like the S f2. Tamron F2. I first thought it was simply interesting that Nikon had produced a lens with the same focal range as the classic Tamron version--which goes far back before the e mount version was released. Reading all these comments, it seems it is very likely, if not definitively known, that this is a result of cooperation with Tamron.

Great to see the mount info being shared and new designs to Nikon being released. Sad that this won't be sold with the standard Tamron value discount and that Tamron may not create their own z mount lineup going forward. There is plenty of cross pollination already, at least in the bodies. All the sensors Sony makes for themselves and other companies use IP developed by Nikon.

You are right about the sensors. I didn't think about that. I was focused on the lenses. Do you know of any past association between Sony and Nikon in terms of lenses?

I do think it is great overall as Tamron has filled in a lot of blanks in my kit in the past and I have been waiting for third party support of the z mount. I love my Tamron and Nikon did produce their own independently of Tamron I believe. At this point, I would probably adapt it rather than go z mount with that zoom.

I think the Nikon lens was the first to the market by years. Sony is a large company split into lots of divisions, it's also a company with lots of investments eg: in Olympus, probably because of its strength in the medical market. A division it's subsequently spun out used to be a major supplier of LCD panels to just about every camera maker. Another division is a leading supplier of OLED panels used as viewfinders. And, of course, there's Sony Semiconductor, which supplies sensors to just about everyone else.

Don't mistake a connection to part of Sony for a collaboration between a camera maker and Sony's camera division. All very interesting, and, no, I was not suspecting a collaboration between Nikon and Sony. More of a 6 degrees of Kevin Bacon sort of thing. I remember there was a video online of a tour of the Sony sensor plant after the big earthquake hit it and they walk you through the wreckage of the production floor.

They blurred out all the brand names on the Silicone wafer lithography equipment as they walk past it. I guess it would be awkward to walk through a Sony plant with so many Nikon machines inside. But it just goes to show how massive conglomerates create these loops where one branch is helping another company that another branch is competition with.

It just makes it so comical when somebody shouts, "But Sony makes the sensor so just get a Sony! Before commenting- Canon's mm f11 is not useless in comparison, unless you think the following massive size reduction is meaningless:. Apples and oranges in ability and optical quality. So what? F11 is pretty dim for moving subjects in anything but bright sunlight. And the design of RF looks b My head aches every time I look at that lens.

So I'd say they're different beats, the Canon would be great for some ground wildlife especially when you're packing that lens a distance. But there are definitely things it can't do that the NIkon can. Pentax rebranded Tamron mm. There are two companies that want to share profits in the end. Nothing new in the viewfinder really.

And Leica has a long history of doing things like this. That mm 5. That lens, rightly priced, will destroy everything for bird and wildlife photography!

I think that this lens and the mm f2. Because I don't see how Canon and Sony can do much about them in the short term. Both brands just released their mm f2. Both brands don't seem to have the mastery of PF elements required for such lenses.

The Canon DO experiment was just that. We knew all along that the 3 manufacturers would end up producing bodies with very similar AF capabilities.

Only people lacking objectivity thought Nikon wouldn't be able to catch up. It's all about the lenses and here very large differences are starting to show. I use a Sigma on a Sigma 2x on a Nikon Z7 mk 1 and it focusses well, with good results though not fast, so not for BirdsinFlight!!

Mind you, I've never been any good at BIF, so trying at is pure comedy. Looking forward to this though if reasonably affordable. Based on the comments here, I think this will be a success for Nikon.

Well it's not an S lens but that's exactly the point. I love when camera manufacturers put out "budget" versions of their high end gear. Not everybody needs bleeding edge pro grade glass. Having good glass in a price segment for the amateur crowd is how you solidify your spot in the market.

Truth is the majority of camera buyers are on the opposite end of the spectrum from the Z9,A1,R3 crowd. While the lens may not be an S lens, I am finding with some lenses it is more just a label. But in terms of IQ it's still holds its own, so I think to an extent, the "S-line" badge is not necessarily all the hype people think it is.

It just means "better" but how much better? The is indeed very nice, but it lacks the Nano coating and it falls apart past 70mm. Exotic special-purpose tool vs. My point was that optically to the eye the differences are more minimal in some of the S-lenses compared to the non S-lenses.

Whether they have the nano coatings or not will not always be obviously and in a blind test say between with some subjects it may be hard to tell which one was what, or which is a non-S lens and which one is an S lens. And it sort of comes back to my original comment about while yes the S-lenses may be better, how much better? Do they live up to the hype? That lens looks significantly better without even pixel peeping I own both.

YEs agreed. I mean everyone I talked to who had the F-mount version loved it and highly recommended it so I can only assume a Z version would be at least as good, if not better. I confess that I am loving seeing the Nikon super aggressive in its releases. Long live the Nikon. Again a proof of my thesis that in the photoworld all companies are polyamorous and it is just like a big swingers party behind the scenes.

That limit can be due to the lens construction or due to being a Sony 3d party licensing limit. So if anyone has this Nikon version of this lens and the Z9, please check max fps you can get out of it DPR I am looking at you!

I would love to see some people dig into this more and maybe find out the details going on behind the scenes. K97, we can see that the layout of elements and specs are identical. So it's the same lens with a different badge and markup. I mean the F mount is a 5. I love when portrait shooting bokeh fiends try to understand wildlife photography.

Like a macro lens wide open and close up, the mm at 6. So nikon gets the old months after the g2 is announced for everyone else. At a premium because it's nikon branded. How much is Nikon full support and warranty worth to you? How much is full compatibility not becoming a brick with new firmware or when new model comes out worth to you? All they did is give folks another choice I think it makes total sense especially when you add the above into the equation.

Why do I think the mm lens won't be affordable? I liked Canon's idea with their F11, but I wish it was closer to F8. My guess is at F8 it would cost 4 times as much. If I had the money though F6. The should be substantially smaller and lighter. I'd say 8k minimum. But in all likelyhood it will be a 5 figure lens. The 2. It seems Nikon has a preference for stepping motors, perhaps that is one reason why they went with the G1 version… I am looking forward to seeing some tests for focus acquisition speed and breathing.

This could be a really great kit lens for me. Not sure why Nikon is using stepping motors instead of linear ones, but it's impacting on speed. DPR found that the adapted FE35 1. DPR even asked Nikon in a recent interview why they use stepping motors instead of linear and the answer wasn't very satisfactory - essentially space concerns. Thanks for that info.

It comes down to the implementation by the manufacturer, it seems…. It seems to depend more on the camera body. Focus speed can vary from lens to lens even within the same lens family the Z 50mm vs 35mm S line, for example. Yet the Z9, in preliminary testing, appears to have a very impressive hit rate compared to its peers, even those whose lenses are not exclusively STM. Nikon does love it's stepping motors, but they're solid stepping motors, and quiet.

Maybe it was the choice of having Liner motors that are a small fraction of a second faster, and stepping motors that are more resilient and long lived. There's benefits with known and perfected technology see the Z9 EVF that is less on paper, but people love more in real life.

Instead of trolling me in pidgin English, do yourself a favour and read the two DPR articles I linked to. One is using e-mount lenses on Z-mount using the Techart adaptor, the other is and interview with Naoyuki Murakami.

Both worth reading. I have asked DPR to substantiate their criticisms but they never do. Really sloppy journalism. You can read an explanation from Nikon in the interview I linked. They claim that stepper motors are used because they take up less space. This seems somewhat perverse when you consider the majority of Nikon Z lenses are larger than Sony equivalents. It is possible that Sony is ahead of Nikon in this area - you seem to have discounted this possibility for some reason.

DPR's 'opinion' is not 'vague'. They are on the record as saying linear motors are faster. The slowness of the stepper motors is relative, but noticeable if you have a comparator, as Carey did in the Techart article.

Miniaturizing something just because you can isn't always a good idea, it usually involves added costs, and more delicate hard to source components. Like everybody has said. Nikon lenses are doing just fine with their stepping motors. Why why overcomplicate something that isn't broke? Nobody has ever said, "My photography would be great if it wasn't for these d-mn stepping motors! Did you read the interview with Murakami?

DPR was obviously curious as to why Nikon has not switched to the faster voice coils. They didn't really get a satisfactory answer. It's relative - if all you know are stepping motors, then Nikon's lenses focus quickly enough. If you've used Sony then the stepping motors seem noticeably slower, as Carey remarked in his article: " It's like DPR is full of people who only look for things to complain about.

No, the doesn't appeal to me, but it's been popular for E so I'm sure it'll sell for Z. People are free to complain and there's nothing wrong with that, that's how you get things to get better. You realize people are complaining because Nikon went with licensing the G1 and not the better and optically improved G2 version - that's it. No one is complaining that there is another lens, just the choice of which to use. The Nikon Z mm F2. With a versatile focal length range and a fast aperture for low light photography and blurry backgrounds, this lens promises sharp imagery and smooth bokeh with minimal aberrations.

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