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Technical Reference
272 topics in this forum
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- 2 replies
- 5.1k views
I've spoken with a few people and read numerous posts where this distinction is not made. I have a loose understanding of it and would appreciate those more knowledgeable chiming in to clarify. I've tried finding this in the ARRL handbook but am not sure what search words to look for in the index. From my understanding, RF gain attributed to an antenna type such as a helical(+14db) or LPDA(+4-6db) is totally different from gain needed to get back to zero on a receiver from couplers or long cable runs using a low noise amplifier(LNA). The antenna gain is similar to microphone pickup patterns and their "reach". A helical antenna radiates a field that is cone shaped( I th…
Last reply by Glen Trew, -
- 5 replies
- 1.7k views
Anyone have a current DEVA V manual or know where I can download one? The only one I can find online was revised in 2004. The link on Zaxcom to the latest manual, which they say was revised on 8/17/2007, is a dead link. Thanks!
Last reply by Glen Trew, -
- 43 replies
- 11.4k views
Marc Wielage has kindly provided a .pdf of the telecine specifications and capabilities he presented at our union seminar awhile ago. There may be some updating required but for the meantime this is a valuable and instructive document regarding our evolving workflow. Regards, Jeff Wexler
Last reply by Jeff Wexler, -
- 6 replies
- 3.3k views
OK. Have the list for most of the comteck channels: 72.100 Comtek M72 FM Ch.A 72.300 Comtek M72 FM Ch.B 72.500 Comtek M72 FM Ch.C 72.700 Comtek M72 FM Ch.D 72.900 Comtek M72 FM Ch.E 73.100 Comtek M72 FM Ch.N 73.300 Comtek M72 FM Ch.M 73.600 Comtek M72 FM Ch.K 75.100 Comtek M72 FM Ch.L 75.500 Comtek M72 FM Ch.F 75.700 Comtek M72 FM Ch.G 75.900 Comtek M72 FM Ch.H But I just got a letter J transmitter. What are the higher freqs.? Jim Mansen
Last reply by JimMansen, -
- 8 replies
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Whilst perusing the Phonak web site I tried this simple hearing test There is no real scoring, just advice as to whether you may need to see a loss specialist. I tested with the MacBook Pro open speakers set to a couple of clicks below mid-volume. I believe I heard all the words except one– I was in my kitchen and the refrigerator compressor clicked on precisely when one was spoken. http://www.phonak.com/us/b2c/en/hearing/recognizing_hearingloss/hearingtest.html
Last reply by Bondelev, -
- 9 replies
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Hoping someone can help me with this. I'm looking at changing the settings on the limiter out of my Audio Developments Board. The manual mentioned two things about setting the limiter (outside of attack and release times) - "Biasing and Threshold." The term Biasing is not something I understand in this context. The manual reads like this: "Biasing and threshold are adjusted as follows: VR1 biases the limiter circuit to the point of correct operation and VR2 sets the threshold." Is Biasing at all related to "make up gain" that is offered on many compressors? Thanks for any knowledge, -Greg-
Last reply by Philip Perkins, -
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I've been having an interesting time since I changed from an old SQN to a SD552 mixer recently. One thing that I have been baffled by is this.. I do a lot of shoots with the Sony EX3 camera which I have quite liked as initially when using my SQN mixer I felt that the EX3 had good sound and an ok return quality from the headphone mini jack. Recently it had seemed that the headphone out on the ex3's that productions had been hiring was not so good. No bottom end present which made monitoring the return unsatisfactory. Especially outdoors in windy conditions. Also I was getting some strange high pitched whining on the return only when using a radio mic tx fed…
Last reply by Matt Mayer, -
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Any reason why I couldn't use a star quad or twisted pair audio cable as a short video cable for a video balun?
Last reply by Michael P Clark, -
- 15 replies
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Is anyone using or know about Peak Pro and/or Peak le for music playback? Ive never read anything about here, but i am interested in this audio editing software. ~Kevin
Last reply by Jimmy Tuffrey, -
- 0 replies
- 1.2k views
hi there, i have a 6meter regular 2 channel xlr multi cable (for normal balanced analog signal) i have bought neutrix 75 ohm bnc to 110 ohm xlr http://www.neutrik.com/fl/en/video/210_2044239418/NADITBNC-M_detail.aspx (and 2 bnc - bnc 30 centimeter cables "canare 806 75 ohm") i thought i could use my regular xlr 2 ch 6 meter multicable to hook up my 744t to a xd cam using the aes output to the aes input is this going to work? cheers martijn i.a.o. is the 110 ohm cable also needed when only using 6 meters?
Last reply by martijn scholte, -
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Well, long story short, I am having trouble exporting sound files from a Korg D3200 digital recorder to my macbook. The files include a 1.4 gig 16 bit (44.1 khz) file, and the other is 24 bit (48 khz) and stands at about 4.8 gigs. Now i have two main problems, the first is that the transfer space i have available on the recording station is only 4 gigs, and i can't transfer the larger of the two files to my computer via USB. I need some way to either cut down on the track, or enlarge the transfer space without ruining or deleting what i have. The second came when i transferred over the smaller of the two files, but found it was a .DBK file, which i found out, after…
Last reply by studiomprd, -
- 2 replies
- 1.3k views
Hey - I'm new into the sound world, and I got my first call for a sound job on the Red today. I know there are a lot of things that need to be done differently (that it does not have XLR inputs for example). I would REALLY appreciate any advice. I have quite sometime to figure it out. Thanks!
Last reply by ProSound, -
- 2 replies
- 1.6k views
I saw this on another forum: " uses a ta5 input which is much more robust than the lemo plugs " while the TA type connectors are less costly, more readily available, and usually easier to solder up (due mostly to being a bit larger) I have always found Lemo connectors to be more robust than the TA type. I also prefer the Hirose connectors over the coaxial connectors for power connections, and the Nutricon's over XLR or other types for breakaways... Many products mention their gold flashed connectors as a premium feature, and Lectrosonics is still mulling over what power connectors to use on future products! Lemo pins (gold flashed) make better, more reliable connec…
Last reply by studiomprd, -
- 15 replies
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I have a feeling this might have been discussed here before, but I couldn't find it so here I go. As an example lets say you are using a 442 mixer going to a EX1 camera. The Mixer peaks at 20db, but the camera peaks at 12db. If you set your tone to 0db on the mixer and 0db on the camera, the camera audio will not mach to the mixer and will clip much earlier. At what db should the tone be set to on the camera to match correctly? And is there a formula to figure that out for other unmatched db situations? Nejc P
Last reply by Jeff Wexler, -
- 2 replies
- 1.8k views
The long awaited firmwareupdate for one of Canon's most popular DSLR cameras has finally arrived. Firmware Version 2.0.3 incorporates five enhancements to the movie function anda fix to the manual sensor cleaning function of the EOS 5D Mark II camera. If you'reone of the many 5D owners who have been anticipating the release of these newfeatures, you already know that this is big news. If you haven'tpurchased the 5D yet and have been holding off buying it because of the framerate issue, your wait is over! CLICK HERE for 5D Mark II Product Info& Firmware Update Link http://web.canon.jp/imaging/eosd/firm-e/eos5dmk2/firmware.html 1. Adds or changes the following mo…
Last reply by Marc Wielage, -
- 0 replies
- 977 views
Charles Tomaras has posted this helpful ink on RAMPS; as he doesn't post here, and I don't post there, I'm thanking him, and cross posting this reference: http://reboot.fcc.gov/reform/systems/spectrum-dashboard
Last reply by studiomprd, -
- 9 replies
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Does anyone know if I can charge a battery (NP-1 or 7.2V DV batt) while it is still connected to my equipment? Or would I have to disconnect the gear from the battery to protect it? My batteries are buried in my ENG bag and I was thinking it would be nice to just plug the battery in to a charger instead of having to dig it out. Any thoughts?
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- 3 replies
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Following the DTV transition, there will be some changes as to where in the spectrum the TV stations will call home. In my area (Indianapolis), for instance, a couple of stations will transition their DTV frequency back to where the analog one was. In other cases, stations are moving into slots formerly occupied by yet a different station. To help sort out how the changes will affect your favorite freqs, here are the FCC's "Coverage Maps for All Designated Market Areas" as they are projected to be after the switch to full DTV is made: http://www.fcc.gov/dtv/markets/ (Thanks to Matt Mayer for posting a link, on RAMPS, leading to this link.) I don't recall see…
Last reply by wolfvid, -
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- 1.5k views
Jonny one note keeps reminding us how easy it is to get information for ourselves... one of the better places to get up to date TV station information is still www.antennaweb.org
Last reply by studiomprd, -
- 7 replies
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I know this is possible and tried searching for it, but was unable to find any details. I was interested in using some of my Sennheiser's as an IFB since my Comteks got stolen. I'm using the 552 now and I'm feeding the transmitter from the mono mic out of the mixer. I'm just not sure on the setup for the receiver. What is the setup for using headphones with the receiver? Is it useful to have an inline (manual) volume adjustment on the headphones? Are there specific settings that need to be set on the receiver? Best, Palmer
Last reply by PTA, -
- 0 replies
- 1.1k views
Here's a neat website for finding open FM frequencies. Not used often, but useful for the occasional broadcast to background cars, etc. http://www.radio-locator.com/cgi-bin/vacant?select=city&city=
Last reply by BudRaymond, -
- 16 replies
- 3.9k views
Hi Everyone, I'm purchasing more wireless systems and wondering, in your opinions, which blocks are looking good for now and the near future? Thanks for your input! Charlie Slemaker
Last reply by studiomprd, -
- 12 replies
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I am trying to build a Tape (-10db) to Mic (-50db) pad. It is to cut the level from a stereo -10db source to a stereo mic input on a video camera. The stereo signal needs to be maintained. Does anyone have a schematic for this?
Last reply by jason porter, -
EMW wiring
by Brett- 11 replies
- 3.5k views
I was wondering what the pin assignments are to wire a Countryman EMW for 3 pin wiring to be used with Lectrosonics UM transmitters.
Last reply by Eric Toline, -
- 25 replies
- 7.1k views
I've outgrown my powerstation and and cant justify a meon or powermax right now. I also dont have the time or skill to craft anything so elegant as Phil(beautiful distro box from another thread). Peter at Gotham recommended i take a look at the Super Powergate http://www.westmountainradio.com/SuperPWRgate.htm It provides power from either a power supply or battery(switches to battery if there is a kickout) or can be set up to float a battery. It also has a staged battery charging system built in The other item i found on their site are their Rigrunner series http://www.westmountainradio.com/RIGrunner.htm It seems these would be great to use for distro. each outle…
Last reply by wolfvid,
