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mark kirchner

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Everything posted by mark kirchner

  1. I second JonG, Sound Guys Solutions on all my boom poles.
  2. You will get a hard copy in the mail, but no card. Make a photo of the paperwork and store it on you phone just incase you need to prove you are a part 74 license holder.
  3. Great work! You better get a backup made before the price increases.
  4. For your amusement.......... HAM Radio jacket patch
  5. Aluminum Round Tube Source If you want to use aluminum tubing for the cross-bar on your antenna mast I would like to recommend Marty at Trinity Metal Sales Ebay store. http://www.ebay.com/usr/highdesertmartin He cuts to length 24" 36" 48" Tube outside diameters 1/2"inch, 5/8"inch* and 3/4" inch in 1/8" inch wall thickness. Note: Read David Waelder thoughts above on reducing metal in and around your antenna. A fiberglass, plastic or even a wooden dowel maybe a better choice over aluminum. Mark * my fittings used 5/8" OD stock
  6. Mogami W3031 (braided copper shield) and Redco TGS-1 I get both for Redco Audio Mark
  7. I think Tom's wiring is correct. My unbalanced hop cable was made by Eric Toline with no connection to the tip on the TX 3.5mm TRS. Works perfectly. I have had 3.5mm locking connectors that "look perfect" that sounded poorly.
  8. Robert, I use pretty much the same settings you are. I think Rick maybe correct in that the "TX hop cable" for the G3 is wired differently. Line level signals connect to the ring on the 3.5 TRS, no connection to the tip. Mark
  9. Great to have Larry add information to this conversation! I wrote Tamara White of Kent Electronics this morning, ( Kent Britain designed the log periodic dipole array 400 - 1000 MHz WA5VJB) that we are using as the antenna for our DYI Shark-Fins. I asked if a balum was necessary for his antennas. Here is the reply from Kent Britain, the design engineer: Most Log Periodics have a high impedance. The Balun or Transformer is converting 200-300 Ohms down to 50 Ohms. The Kent Electronics PCB Log Periodics are designed to have a much lower impedance and sort of wander between 50 and 60 Ohms over the frequency range.They are designed for a direct 50 Ohm match, no balun or ferrites are necessary. Sincerely, Tamara Wlhite, Kent Electronics Tamara's article: https://turbofuture.com/misc/How-You-to-Use-a-400-1000-MHz-Log-Periodic-Printed-Circuit-Board-Antenna
  10. Hi David, Your article for the 695 Quarterly is great! I reread it last night, thank you. I looked at Delrin for the attachment to the antenna, but found a piece of super high-density polyethylene plastic scrap that was the correct dimensions, so I used that. I plan to replace as much metal as possible like the aluminum crossbar and light stand. I am at the “tinkering stage” in the building process. My interest in antennas started with doing the SMA connector modification of the Sennheiser G3. Last week I connected a G3 receiver to one LPDA and did a line of sight test in my neighborhood. I was shocked that I got the same distance (600 + feet) as my earlier, Lectrosonics LR receiver / LT transmitter gear (using whip antennas). The G3 test did not have any “control” to compare with, just a quick test. It also relied on the output feed cable on the G3 as the “diversity antenna” as part of the original Sennheiser design. Thanks again, Mark
  11. Hi Stacy, From my understanding the feed line / phasing harness needs to be at the front of the antenna. I hope this diagram will help. I am learning a lot, but no expert! If the feed line could be placed in the back of the array, miles and miles of wire could have been saved over the years, (see color photo). Mark
  12. Making progress on the log periodic dipole array.
  13. Hi Steve, Thanks! I enjoy building and problem solving. If I don't get into the workshop often, I get rusty (tools too). Mirror Image makes a very nice handle for the Denecke slate. Best, Mark
  14. I just finished my DYI slate handle for my Denecke slate. We have had a lot of rain in California so I finally completed the project. I had more time than money! There are additional posts on the topic in Manufactures & Dealers, but I my case this is a DYI project. Tools used: Drill Press, Drills, Counter Sink Bit, Hacksaw, Files, Tap and Die and a Belt Sander. Materials used: Scrap Aluminum, 2- Flathead Screws, 2- Roundhead Screws, Sandpaper and Lay-out Fluid. Note: I did bore 2 small holes to mount the handle to the slate, using the original Denecke hole spacing (not seen in photos).You can see the layout lines and hole spacing/placement in the bottom image. Mark
  15. Great work Rachel! I have my DIY shark fins (log periodic) antennas on my workbench now. I would suggest in time you add a right angle SMA connector at the wide end of the antenna so you can store the antennas (see photo #15 Matts). Let us know how they are working. Mark
  16. Both Markertek and Redco Audio sell both cables buy the foot. Markertek sells the Canare L-4E5C mini star-quad in different colors by the foot, Redco sells black only.
  17. KARL'S MISSING INFORMATION Lectrosonics Digital Hybrid is about 3 ms, Sennheiser 9000 Series are about 3.4 ms, Zaxcom are about 8 ms. So, for instance if you had a Zaxcom + DPA4071 like the OP described, on the talent, and a wired (no latency) CMIT on the boom that was 4 ft from the talent, then you would want to ADD about 4 ms to the boom channel to match it with the lav channel. Karl / Lectrosonics
  18. Hi Kevin, Sound devices makes great equipment and has good information on their website. Have you down loaded a copy of the 702 manual? Since you are not using a stereo microphone or stereo technique you are recording a single channel/track or "mono" recording. Your question #1 needed to be written like this; Does anyone record a single mono file and then make a second copy of the original file and then make a left and right track so it will "play" in both a left/right speakers or headphones? Answer/Yes #2 Record>Copy CF card to computer and back-up device>Reformat card in your 702 recorder>Record new material Enjoy your new 702, Mark PS to search this site use google > like this > SD702 jwsound or Sound Devices 702 JWSound
  19. Hi Mojo, This iBook " Down to the Wire by Thomas Popp has some good information in it. https://itunes.apple.com/us/book/down-to-the-wire/id598071724?mt=11
  20. The MiniCMIT is just 17mm longer that the CMC6/MK41!
  21. Hey Glen, Blas and Mike, We are a few years late for the 2013, 15th Anniversary Oldest Sound Device product contest, but we will be ready for the 20th anniversary!
  22. My 442 S# 030402266000 All silver faders knobs. Looks like mine was the first unit made on June 26, 2002. Just noticed this thread is 3 years old. LOL
  23. Jim, I am the third owner of my 442 mixer. The 1/4" headphone jack lost the right channel so I contacted Sound Devices and requested the repair history for the unit. It had been back once since 2002, so I thought is was time for a general inspection and repair. Sound Devices replaced the following: Both headphone jacks, 1/8 mono mic output jack, replaced all 4 fader pots, replaced the RTN pots, replaced channel 1 TA3 direct out, replaced right limiter LED and passed all factory bench tests-confirmed unit is at production spec. Labor and parts $430.42 I hope this information will be of help.
  24. My 442 was made in 2002, overhauled last year and going strong.
  25. The Lectrosonics LT and LR battery compartment "rubber spacers" problem has been solved. Mine were replaced by Lectrosonics (for free) as part of the warranty.
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