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Thread: 102" whip antenna

  1. #1

    Default 102" whip antenna

    I lost my old 48 inch fiberglass antenna and need to buy a new one. Google tells me a 102 inch is awesome. Anyone have any comments on this? Can I arc it from back to front?

    For a cb if that wasn't clear.
    Maria: Can we ride in your Jeep again? Please!?
    Lily: My tooth feels loose, can you use your tools to pull it out again?
    Juliet: Can you carry me upside down to bed?!
    Violet: Cookie?

    My pics

  2. #2

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    Yes you can but it impacts it effectivness. They make great tree snaggers.
    KDSRGON GL#2665 KD8EGK
    Thanks to those that do all the hard work.

  3. #3

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    I have one on my rig, it is awesome. Yes it does snag trees, but you can bend it over to the ground without it breaking. The clanging into the truck is the worst offense.

    My local radio shack had one in stock for $30-35 when I bought mine.


  4. #4

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    Quote Originally Posted by lgottler View Post
    I lost my old 48 inch fiberglass antenna and need to buy a new one. Google tells me a 102 inch is awesome. Anyone have any comments on this? Can I arc it from back to front?

    For a cb if that wasn't clear.
    DON'T do it. Strapping the antenna down and curving it over the truck will make is as effective as a set of Dixie cups. The EMI (Electromagnetic Intereference) with the antenna that close to the body of the vehicle will effectively cancel out most of your transmitted watts. You radio puts out typically 4 watts. The rejected wattage with the antenna near the steel body will suck up probably 90% of that. You'll put out maybe a 0.25 of a watt if you're lucky. Leaving the antenna free to whip around is a huge danger to those around you when you're doing some slow rock crawling stuff.
    Antennas like wide open areas around it. Plus that antenna is NOT very forgiving when it comes to tuning it. To tune it you have to cut off the length to get it matched. What happenens if you cut to much off? I'll let you figure that out.

    I have a better solution. One I have used for years. And with still only putting out 4 watts, I'll challenge anyone to match the performance of my little radio.
    See the link below to what I have. Notice the tuning tip at the top. Completely adjustable up and down. The REAL secret is to tune the antenna to the radio properly. Here's where it gets interesting. Antenna's can only be tuned to ONE frequency or channel optimally. Channels on either side of that channel will degrade further and further SWR wise. Meaning if I tune my radio to a SWR (Standing Wave Ratio) of 1.1:1 on channel, it in theory would be transmitting all 4 of the watts out with nothing being consumed as heat. If you measured the SWR on adjacent channels You will find the SWR gets higher and higher the further you move from your set channel. The problem with a high SWR is that if you put out 4 watts with a high SWR, 3.5 watts of that is being rejected or used to create heat actually and NOT being used to communicate. So pick the channel you want to use most often and tune it to that channel. I wouldn't pick channels near the ends because you will have an extremely high SWR on the far reaching channels. Instead pick something near the middle. Channel 19 or 20 if you have a 40 channel or Channel 11 or 12 if you still have a 23 channel unit.
    The other thnig to remember, SWR of greater than 2:1 can be VERY distructive to your radio, Meaning too much output is being turned into heat which in turn can start to heat up the internals of the radio. It's one of the reasons big power radios blow out their final amplifiers because at very high output levels you have to be very careful.

    Get this antenna and match it properly and you won't be disappointed.

    http://www.k40antennas.com/products/...0-watts-black/

  5. #5

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    I've used that K40 and have also had good luck with the Firestick in the same format.
    http://www.amazon.com/Firestick-II-f.../dp/B00317HUWU
    KDSRGON GL#2665 KD8EGK
    Thanks to those that do all the hard work.

  6. #6

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    I give up. Who sells locally?
    Maria: Can we ride in your Jeep again? Please!?
    Lily: My tooth feels loose, can you use your tools to pull it out again?
    Juliet: Can you carry me upside down to bed?!
    Violet: Cookie?

    My pics

  7. #7
    Lower 41.5 GLFWDA Member Renegade II's Avatar
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    May 2006
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    Frankenmuth / Saginaw, Mi.
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    Default

    Wilson tunable tip antennas are usually in stock at the truck stop, exit 144 on the Dixie Hwy in Bridgeport. They usually have them in 3' & 4', super flex and regular. I've been running a 3' super flex on a spring for about 2-3 years now and it's still 1.0:1. Fairly impressive for the beating it takes.

  8. #8
    GLFWDA Member GLFWDA Member Greenway's Avatar
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    Sep 2007
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    Fenton and Whitehall MI
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    I have had good experiences dealing with these guys.

    cbradiosplus.com

  9. #9

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    Quote Originally Posted by Greenway View Post
    I have had good experiences dealing with these guys.

    cbradiosplus.com
    I tried to order from them just now and ended up using amazon because shipping was 18 bucks less!

    Thanks guys, wanted to touch it in my hands before I bought it, but nothing close enough to me.

    Ended up with same stuff I had before, k40 4' fiberglass. Had to buy a new cable too though, looking at the ends revealed broken solder and frayed ground wires all corroded.
    Maria: Can we ride in your Jeep again? Please!?
    Lily: My tooth feels loose, can you use your tools to pull it out again?
    Juliet: Can you carry me upside down to bed?!
    Violet: Cookie?

    My pics

  10. #10

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    Now, who has a swr meter really close to me?! New Baltimore.

    Also, it says to try and mount it away from metal surfaces that are horizontal, like a hood. Can I mount it on an angle and get awesome power from it?
    Maria: Can we ride in your Jeep again? Please!?
    Lily: My tooth feels loose, can you use your tools to pull it out again?
    Juliet: Can you carry me upside down to bed?!
    Violet: Cookie?

    My pics

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