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About LarryF

  • Rank
    Hero Member
  • Birthday 12/11/1943

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Profile Information

  • Location
    Rio Rancho, New Mexico
  • Interests
    Classical music, fast cars and Maine Coon cats
  • Interested in Sound for Picture
  • About
    I have been chief janitor at Lectrosonics for 40+ years.

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  1. LarryF


    That does look like a five pin connector. Pretty clever, but no.
  2. LarryF


    Best Regards, Larry Fisher
  3. LarryF

    Where is the Senator?

    +1 LEF
  4. LarryF

    Sound gets no respect! Hmmmm.

    Absolutely perfect Jay. I may have that done in needlepoint to hang on the wall. Best Regards, Larry Fisher
  5. LarryF

    PSC Antenna Distro

    Don't forget the input noise figure of the PSC amp. A quiet amp with any input filtering will have at least a 2 dB equivalent input noise figure. With the gain numbers given, that will put you at an output noise floor of 8 to 10 dB, which is strangely equal to what Manuelchk is seeing. Sometimes the numbers do add up. Best Regards, Larry Fisher p.s. PSC doesn't give a gain figure on their site. Gain in a distribution amp (input to any output) is not generally a good thing. The quoted noise figure (0.8 dB) is awfully low and would be a very good number for an ideally matched amp on the bench. Maybe not so good in the field.
  6. The dealer was very responsive and Karl at the plant contacted them to make sure the dealer had the silver paste. The dealer said you were coming by for some SNA antennas and would give the paste to you then. It only takes a pinhead of silver grease if the threads are clean. Excess silver paste will attract dirt. To any other users, you can contact service at Lectro to get a small vial (and I mean small) at no charge. We are happy to supply vials at no charge to dealers so they can keep some in stock for customers. If you want a 500 year supply, this is the correct stuff. https://www.digikey.com/product-detail/en/chemtronics/CW7100/CW7100-ND/307001 Best Regards, Larry Fisher
  7. Hi Constantin, There are three possibilities: 1. They didn't clean the threads properly (wipe both threads with a clean fuzzy cloth until no marks come off onto the cloth). 2. They used fake "silver" colored heat sink grease instead of the electrically conductive, metallic silver grease. 3. The Lectro crew has no real understanding of how to maintain the product since it's made in Lower Slobbovia and the crew only sees the snow covered shipping containers. Best Regards, Larry Fisher
  8. I will contact the factory to get some silver paste to you and to bring the importer up to date on the silver paste. Who is the importer? We will be discrete. Best Regards, Larry Fisher
  9. LarryF

    Zaxcom ZMT3 Hiss

    Please note Trey's post. Larry F
  10. LarryF

    Lectrosnics srb and sl6 problem

    Hi Blags, You can remove local intermod as a potential problem by separating the transmitters from each other by ten feet each, and simultaneously being 25 feet from the receiver's antennas. This will eliminate intermod between transmitters and between transmitters and receivers. These distances are overkill to remove the problem but it guarantees no local intermod. If you are still having problems, it's somewhere else. Frankly, intermod is rare compared to other problems (RF noisy equipment on cart or in bag, video transmitters, defective antenna setups, etc.) It is talked about so much, because if you can eliminate it by the proper choice of frequencies, it is worth the effort. Also, you can try turning on only one transmitter and seeing if your range or dropout problem persists. If it does, it's not local intermod. Best Regards, Larry Fisher
  11. LarryF

    Lectro SMV "L"

    Hi All, Sorry, but I handed out some bad info. L refers to a range of blocks and was forced on us by the FCC. Each range is considered a different transmitter and requires certification as a different unit. This triples the cost of certification and testing compared to previous times. The government bureaucracy continues to grow year after year. Enough ranting. Here's what Karl had to say: <<Hi Larry, That refers to the frequency range, in 3-block groups, something to do with the FCC cert. EL is "extra low" blocks 470, 19, 20 L is "low" blocks 21, 22, 23 M is "mid" blocks 24, 25, 26 -Karl>> In self defense, I wasn't sure so I asked. There are no dumb questions though some do push it. Also, we did have custom units with dialed down power. Best Regards, Larry Fisher
  12. LarryF

    Lectro SMV "L"

    I think it's low power for theater applications where the theaters are back to back. Best Regards, Larry Fisher
  13. LarryF

    Does Lectro UH200C TX provides 48V?

    Hi George, In the male XLR, tie the black wire of the COS-11 (bias) to pin 2. Connect both one end of a 1k resistor (a physically small one is easiest) and the shield to pin 1. The other end of the 1k is connected to the white wire (audio). This causes the black wire to carry the audio into pin 2 of the XLR and UH200. Pin 3 of the XLR is left unconnected. Best Regards, Larry Fisher
  14. LarryF

    Thoughts on lectro upgrade?

    Hi John, Normally, re-blocking is done on units already certified for operation in the new frequencies and consists of changing out some select parts. That is not the case in going from block 19 to 941.The pc boards in your unit were never certified to operate in 941 and it would be a new engineering project to make them run in 941 plus recertification (We are talking 50K here). So it would be necessary to replace the boards in your unit. The new boards might not fit your case (I don't know) and the case would need to be remarked with the new frequencies and FCC ID number. A new case would probably be cheaper. New boards and new case adds up to a brand new unit. It will absolutely be more cost effective for you to sell your block 19's and then purchase 941's. Best Regards, Larry Fisher
  15. LarryF

    Does Lectro UH200C TX provides 48V?

    Hi Koca, You probably have already gone to Lectrosonics.com> support> legacy products> transmitters> UH200C. If not, in the schematic there, you will see that the UH200C provides 5 Volts for lavaliere mics but not 48 (42) Volts for larger condenser mics. That unit was back in the day of news crews using the unit with the ubiquitous omni EV 635 mics, a extremely rugged dynamic omni mic also know as “The Buchanan Hammer” (EV was based in Buchanan, Michigan). The apocryphal story was that the salesmen would demonstrate the mic by using it to drive nails into wood. For this universal application (as a mic, not a hammer), 48 Volts was not necessary or wanted. Lectro units that provide 48 Volts have a switch to select between 3 voltages, 5, 15 and 48. No switch, no 48 Volts. In short, the UH200C will not provide 48 Volts. Best Regards, Larry Fisher