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Thread: coils on mobile antennas

  1. #31
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    I use a tone generator App I downloaded on my Smartphone, and a 4' florescent light bulb...

    Duck tape the Mic's PTT button down, then set the tone generator...Then I stick the light bulb up to the antenna to make it light-up, and start walking around the truck and where ever the bulb go's out, I place a Playing Card on the ground...

    Then re-adjust the antenna, and do it all over again!.......Trick is holding the light bulb at the same height while walking...


  2. The Following User Says Thank You to JesseJamesDallas For This Useful Post:

    High Voltage Mobile NJ (07-30-2012)

  3. #32
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    I do the same damn thing jjd! I got the light bulb 80 FEET infront of the truck before it goes out, 2feet in the back of the truck. Thats with the flat coils. Im making a set of fighting stix for one of my homeboys in the minigrass and ill be testing that the same way. Hope i get same results

    noizybuilt.com

  4. The Following User Says Thank You to noisemaker For This Useful Post:

    High Voltage Mobile NJ (07-30-2012)

  5. #33
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    Quote Originally Posted by noisemaker View Post
    Thats funny stuff. My 10k pretty much the same results, but i cant believe a 102 is that flat across the band.

    I think im going to challenge that test and perform my own- on 2 different vehicles using the same meter.
    I dont use lmr240, but i do run LMR400 in the little mobile, and 1/2" heliax in the burb. I even have a silverado too- i can test it on that as well so my tests can be as close as theirs.
    Ill test all of the antennas, the bandwidth, the impedance, reactance, etc.
    We'll do a 10k comp, a Terry Built 55R4, and a 102. (dont have a monkey)
    THEN we will do a 102 by itself, then with a spring, and then with an extender tuned for 27.205.
    OMG dont EVER use spring on any antenna... thats a good way to blow your stuff up

  6. #34
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    the real stainless spring that the police used to use are great but very hard to find now a days

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