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borjam

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About borjam

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  • Location
    Bilbao/Spain
  • About
    Bilbaina Jazz Club
  • Interested in Sound for Picture
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  1. Oh sorry, silly me. He doesn't have any wireless audio specific stuff but maybe he can design custom equipment. https://www.jghitechnology.com/gb/
  2. Speaking of filters, I stumbled upon a small company in Italy (I think it's a one man show) that makes some really nice ones. I just purchased a FM broadcast notch filter for a project at the university and the specs are unbelievable. Although he lists several filters on the web page, I think he can make custom ones. Not the kind of filter needed here (our challenging use case, a wide band listening post which comes closer to ingelligence gathering operations than motion picture filming) but the attenuation figures at 108 and 118 MHz are pretty spectacular. ZNL_ScreenShot_2019-05-29_10-41-37.PDF He was slow to ship (took longer than a week) but I think this filter (which is not listed on the web page) was custom built on demand. So no complaints in that department. And the prices are very good.
  3. Although I am sure top manufacturers include extensive filtering, filtering is still mandatory if you use some kind of amplification. For example if you use splitters, which imply some attenuation, you may need an amplifier between the antenna and the splitter. And that amplifier should always have a properly filtered input. Otherwise all kinds of evil can happen.
  4. I think he was Gordon Willis? I recall I read an interview somewhere where he admitted that he overdid it in The Godfather
  5. Specs wise the Rode NTG3 might be at least close. I imagine the sound will be different but unless you are recording dialog it probably won't be much of an issue. I own a NTG8 myself and it works very well outdoors. I also did a brute force test of RF immunity and I must say both the NTG8 and the MixPre 3 passed with flying colors.
  6. Sorry to chime in late, It's being a really hectic week (my father passed away on Sunday) so I didn't follow the news much. The vulnerability is a serious design flaw because it launches a web server in the user's computer. That server is only accessible form the local computer. You can't connect to it from the Internet, but it's possible from a program running in your computer. So it is still available, for example, to your web browser. Remember that web browers are not just document viewers. Many years ago a programming language was added (JavaScript) so it can be a dangerous combination. Although Zoom's response to the first disclosure was far from stellar (at first it seems they were unable to understand why launching that web server is an Extremely Bad Idea™) they have now released an update that solves the issue. Getting rid of the software is also easier thanks to a comprehensive uninstaller. Some colleagues who were using it have confirmed that indeed the web server is done. And hopefully Zoom have learned a hard lesson.
  7. Have you seen that Rycote sells larger Lyres for thicker microphones? https://mymic.rycote.com/products/lyre/modular-lyre-upgrades/pair-of-duo-lyre-72-19_34-with-adaptor-screws/ The ones I used are designed for 19 - 25 mm diameter mics.
  8. I'm not sure about the original Blimp, but maybe this hack is compatible. Maybe they reused the basket and rail.
  9. The Rode Blimp 2 is a vast improvement over the first version. They upgraded it to adopt the Lyre suspension by Rycote, which is orders of magnutude better than the old traditional rubber ring suspension. Alas, it seems to be a half baked product and so far they haven't shown much interest on it. Two important flaws are: 1- The built in Lyres are too soft. Rycote manufacturers Lyres with several grades of stiffness. The possibility of using different lyres would be great. Sadly Rode decided to manufacture a sort of standard Lyre but with a built in adapter for the Rode rail, in a single piece. This makes it difficult to adapt Rycote spare Lyres. 2- Despite selling a long shotgun microphone, and a pretty good one at least for nature recordings, the NTG-8, they sell an extension kit which they say is only compatible with the first version of the Blimp. Turns out it's perfectly compatible with the second version, but the suspension Lyres are not stiff enough to support a long shotgun. See flaw #1. Fortunately it's not that hard to solve the problem. I purchased some spare Lyres from Audiosense (Belgium). I had no idea which variants to order, and they have modular and pre modular options. Pre modulars seem to be intended to upgrade older systems. The good news is, the pre modular is a modular Lyre with an additional adapter piece you can remove. To the left, a Rycote spare (in this case a Duo Lyre 72) and, to the right the built in Lyres from Rode. The Rode Lyre looks like a Rycote one but with the adaptor it would be molded in the same piece. It's possible to make such an adaptor (and I am measuring it and drawing it so that it can be 3D printed) but I wanted a quick test. After some minutes with a Dremel (don't forget your safety googles!) and a couple of plastic pipe attachments for 15/16 mm pipe I could finally make a couple of kludgy but functional Lyre adapters. (The not exactly precision cut grey plastic piece). Almost any rectangular piece of plastic with a hole in the middle will do, but there is one tricky problem: It needs to be within a certain heigth range, or the screw that links the Lyre and the bottom rail won't hold properly. The screw, the plastic adaptor and a bottom piece form a locking mechanism thanks to the pressure on the rail. About 10 mm is just right. I will complete a drawing of a possible adapter and, if possible, make a 3D model for printing. So how is it with the new Lyres? I would say it's much better. The Blimp is still very front heavy thanks to the long microphone and extension and using it on a boom pole for movie dialog would be considered serious mobbing on the boom operator. But it works fine for nature recording. I dare to say Rode chose the wrong "shore" for the Lyres. The 82 shore will support shotgun microphones much better.
  10. With a Mac it won't be much of a problem if you act wisely. Apple uses a really effective packaging system for program libraries, which means that there is not a chaotic system directory like "WINDOWS/SYSTEM" where everything is mixed up and the results can depend on the order in which you installed several applications. There have been idiots developing software for Mac OS X, like Logitech installing a silly "application enhancer" library in the System folders and rendeding the system unbootable when updating to Mac OS X 10.6 (Snow Leopard) but I think Apple slapped them properly and it's more unlikely to see an incident like that again. As for system updates which can be important for security yet detrimental for fragile software like ProTools, I always recommend to use a different web browser (which is the riskiest application in the system) that you can update without fear of affecting ProTools; its code is separated from that of the operating system. Between Firefox and Chrome I would say Firefox. Google has the bad habit of installing invisible auto updaters and, besides, Chrome has a couple of system extensions functionality that I consider potential suicidal stuff (Native Code, etc). So, install Firefox.
  11. Just try not to stick them together. It's better to keep some distance between them, roughly speaking more than half a wavelength or a wavelength. A metal element too close to an antenna can detune it and degrade its performance. It would be most noticeable if you are using specialized antennas (like the "hatchet" shaped log periodics). Also, it's better to arrange them vertically. If they are arranged in diversity pairs you can try to add two "masts" to the cart, with each member of a diversity pair attached to a different mast. And for the masts you can use some non conductive stuff. Fiberglass, PVC... I have found a thread about cart attached antenna masts in this same forum (surprising!): Other than that, unless the preamplifiers in the "boosted" antennas radiate any spurious signals (I guess they will be properly designed!) it should work.
  12. Not to talk about the huge privacy problems. However be careful what you wish for
  13. Yes, attenuators are really useful tools. I missed that feature. Touché!
  14. Sorry I wasn't explicit enough. It would help you explain apparently paranormal phenomena like interference even to wired microphones. Also, depending on what wireless equipment you are using you may have overload issues in the presence of strong off frequency signals.
  15. True, and guaranteed compatibility with Vantage, the spectrum analyzer software. By the way, I always recommend buying the input limiter/6 dB attenuator unit they sell. Otherwise strong RF might damage the input stage.
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