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Thread: coils on mobile antennas

  1. #1
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    coils on mobile antennas

    do you think they do more than just make the antenna work with a shorter over-all length ?
    if you do , share your thoughts on what else they do ..... AND WHY ?

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    They might alter the angle of radiation and/or signal pattern. Just a speculation

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    care to speculate how they might do that ?

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    by forcing the signal up the radiating element

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    it is going up the radiator with or without a coil ...... if the signal wasn't making to the tip of the 108 it would be seen as short (on the cb band) and not want to tune .

    but , what would keep the signal from traveling to the top of the full length element ?

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    back in the day the coil antenna was originally made so the big power guys could ride around and talk. On burbs or vans 102 drive around is not an option.
    in the creation of many different coil antennas some have negative affect. to many coils or to tightly wound can result in a dummy load. also affect how they react with eachother in a 2 antenna set up.
    why is one antenna design better then another. because of the inductance of the coil. or the capacitance created by the length of the bottom shaft. any by flat out testing, of which results coinsided with the mathmitical results.
    by BOOTYMONSTER » Tue Nov 11, 2008 2:07 pm
    how about an option to delete a thread we make ?
    ill admit im at least a part time idiot . sometimes i do double post when editing a post .
    some may find this hard to believe , but ....... sometimes i even get pissed and make a post i regret later . hard to believe huh?? lol

  7. The Following User Says Thank You to coolbreeze For This Useful Post:

    Krazynut (06-11-2012)

  8. #7
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    so we agree , just for shortening ... and some are better designed and constructed than others ...
    whodathunk ????

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    booty one thing we may not agree on is I think a coil is better then a 102 in any drive around situation. mainly for the layback factor while moving of the 102.
    by BOOTYMONSTER » Tue Nov 11, 2008 2:07 pm
    how about an option to delete a thread we make ?
    ill admit im at least a part time idiot . sometimes i do double post when editing a post .
    some may find this hard to believe , but ....... sometimes i even get pissed and make a post i regret later . hard to believe huh?? lol

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    I can tell you a coil antenna is a hellluva lot more broadbanded than a 102. If anyone cares to argue that, the analyzer is waiting..

    noizybuilt.com

  11. The Following 2 Users Say Thank You to noisemaker For This Useful Post:

    Krazynut (06-11-2012), Mr.5150cbrn (05-31-2012)

  12. #10
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    i'll agree with both of those comments too .

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