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Whats used for High Power 50KW Connectors ??

Discussion in 'CB Antennas' started by Jay in the Mojave, Apr 12, 2005.

  1. Jay in the Mojave

    Jay in the Mojave Active Member

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    Hello All:



    Anybody have any experence with 50 KW transmission line type connectors?

    I looked Google over and didn't see any??!?!?!?!

    Jay in the Mojave
     

  2. Captain Kilowatt

    Captain Kilowatt Professional Amateur
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    This is what the broadcasters use Dielectric Corp

    These are a pig to install.The biggest I have installed was for 3 inch line.I guess the next question would be "What are you using for cable?"
     
  3. Jay in the Mojave

    Jay in the Mojave Active Member

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    Helo QRN:

    Impressive to get a dead nuts answer the first time around.

    Thank you.

    Working with a pulse system that may requie the 50 KW Rating. I hoping not tho.

    Jay in the Mojave
     
  4. KingCobra_CDX882

    KingCobra_CDX882 W9WDX Amateur Radio Club Member

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    Dang

    I thought my 1 and 5/8 Andrews Heliax LDF7-50A was tough..

    later
     
  5. Master Chief

    Master Chief Guest

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    Hey Jay, the next time you are in LA I'll get you a private tour of a 50KW transmitting facility running a pair of 4CX25000 and nitrogen charged 6" hardline. Let me know!
     
  6. Jay in the Mojave

    Jay in the Mojave Active Member

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    Yeah maybe a good call!.

    Every once and a while I go to the TRW Swap Meet near the Los Angles Airport (LAX) with some shady radio characters.

    Maybe you can even show up at the TRW Swat Meet, and meet all the other shady radio characters, (you might just feel at home?) wheel and deal, then we usually go and have a power breakfeast sharing what all neat-O radio equipement we bought.

    We haven't broken any windows there ar anything else so we are invited back, instaed of not being invited back, like some places.

    Yeah and then tour your radio station with the pair of 4CX25,000's. I'll try and keep the other guys from making child like noises with thier hands under thier arm pit. You can dress em up, but thats all...............

    Will we be able to take photos, hope its not a military installation!

    Jay in the Mojave

    http://www.a1antennas.com
     
  7. Moleculo

    Moleculo Administrator
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    I think Jay just called me a "shady radio character". I would be offended, but that's probably the nicest lousy thing someone's called me lately.... :mrgreen:
     
  8. Lazybones1222

    Lazybones1222 W9WDX Amateur Radio Club Member

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    Mole said: I think Jay just called me a "shady radio character"

    Well, we are what we are. At least you were not called a "CB Retard". That would really be an insult. :LOL:
     
  9. Cheech

    Cheech Active Member

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    Man thats some coax! What do the antennas look like broadcasters use?
     
  10. Master Chief

    Master Chief Guest

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    I got a picture of me working on the "antenna", but I don't know how to upload it to the photos section.

    Jay, maybe we can arrange a mini tour with your Motley Crew.
     
  11. Jay in the Mojave

    Jay in the Mojave Active Member

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    NO NOT U Mole

    Hello Moleculo:

    No not you Mole.

    I was referring to:

    Desert Don and Welfare Clare, Hose Nose, Left over Carbrator Parts, Tommy and Bob, you know the guys who leave breakfeast on the faces, and can recite any frequency in the book. Just to name a few (Humor)

    I hope this is all straighten out.

    Jay in the Mojave
     
  12. nomadradio

    nomadradio Analog Retentive

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    Uh Jay,
    50 kW on the FM broadcast band calls for either 4-inch or 5-inch (maybe?) heliax. What serves as a "connector" really isn't meant to be easy to take loose. They use brass (bronze?) flanges with six fat bolts to hold them together.

    The assumption is that once you get it all hooked up, you'd have no need to "unplug" anything.

    Brings to mind an adventure from 30 years ago. I was visiting a college buddy in Lexington, where he was Chief Engineer of a FM running 25 kW to the antenna array. Lightning got the coax, blew a 3 foot-long hole in the side of it, just where it met the ground. We hack-sawed the damaged section and pulled the 'slack' length out of the building. Took the transmitter end loose so we could turn that section. Stripped off the plastic jacket, and just "screwed" one end into the other. With a lot of huffing and puffing, got at least a foot of it to overlap. Covered it with 6 or 7 rolls of electrical tape, and went back inside, retightened the flange on the transmitter end and fired up the transmitter. Wonder of wonders, it came right up, like nothing had ever happened. Didn't have to retune anything.

    It took the consultant weeks to get new coax and install it. The station's GM was plenty happy with the 'hillbilly' repair, since he didn't even lose one drive-time shift.

    73
     

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