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CB Fire Stik Dipole Question

Physically, a 4' fire stick is closer to an 1/8 wavelength. Electrically, if it has the appropriate inductor windings (coil) it may be an electrical 1/4 wavelength.
So what he's saying is whereas a shorter antenna may present as a 1/4^ electrically due to the way it is "loaded" by the inductor, it still operates at a disadvantage because it has a smaller physical size compared to a full sized antenna.
Screenshot_20200427-112644_Antenna Tool-01.jpeg
 
Physically, a 4' fire stick is closer to an 1/8 wavelength. Electrically, if it has the appropriate inductor windings (coil) it may be an electrical 1/4 wavelength.
So what he's saying is whereas a shorter antenna may present as a 1/4^ electrically due to the way it is "loaded" by the inductor, it still operates at a disadvantage because it has a smaller physical size compared to a full sized antenna.
View attachment 36672

Thanks for your thoughts on this. Still foggy to me, but hoping to learn.

The part I’m most unable to wrap my head around is that antennas this size have never shown me multiple s-units of difference from a 1/4 whip.

There just doesn’t seem to be anything I can do with an antenna (in a mobile application) that would confirm this.

Another thing we always say is that you can’t tell an antennas performance by DX...but I’ve come to disagree 100% with that. There’s simply no doubt to me that a 1/4 wave outperforms all others.

With a source of reliable propagation, so consistent you can set your watch by it, it’s easy to see the a 1/4 beats an antenna that matches it locally.

I can regularly have dozens of stations thousands of miles away showing an s3-s4 and work NONE of them with my Texas (or 10k or Wilson)..and then screw the whip on and work all of them and more. A daily occurrence here. Yet, any of the two references antennas show virtually zero difference when checking for s-units local...from s1 all the way to S9+.
 
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We'll, the accuracy of your experience is not a provable nor disprovable one for me. I believe you, however.
What it does suggest is what I was said above. Your longer physically 1/4^ whip is superior to the shorter electrical 1/4^ antennas.
Furthermore, local and DX comparisons are apples and oranges. I don't worry too much with 11m local as it's neither my wiggle nor my giggle. I prefer long distance comms. I can wave at the locals driving to and from Walmart.
I will say that I compared 4 or 5 different mobile antennas of various sizes and lengths a few years ago with the help of a local 10 miles from me. There was slivers of an S unit between them all if I recall. Which one worked best for DX? The one I had on my mobile at the time there was propagation.
 
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Homer, Again I thank you for your input. Yeah, I don’t doubt at all the superiority of a 1/4 wave mobile antenna over all others. There just is not a question at least in my mind.

I don’t intend for my experiences to form a scientific proof...they could be picked to part to death, for sure. I think the slivers of difference I’ve seen is relevant, viewed in context, of course.
 
Homer, Again I thank you for your input. Yeah, I don’t doubt at all the superiority of a 1/4 wave mobile antenna over all others. There just is not a question at least in my mind.

I don’t intend for my experiences to form a scientific proof...they could be picked to part to death, for sure. I think the slivers of difference I’ve seen is relevant, viewed in context, of course.

Change whiskey brand.

.
 
@2NC995 - Hi, Don't get too confused, at least for the simplicity

I'm not trying to start an argument either - I'm trying to open up a dialogue about how "Stubby" in a Grocery store parking lot works Texas with a stronger signal than a guy hauling potatoes on the freeway just a few miles from him - but they can hear each other but Texas only hears one.

I was only making observations of how smaller antennas SEEM to work well for what they do, and most of the time, it's simple 2-way conversation close enough to each other.

It's when SKIP rolls in, and somehow the antenna - ANY antenna - seems to work really well for some but to others it doesn't.

So I was simply taking a view of looking for the best methods to make the DX contacts work, the longer antennas closer to their physical 1/4 wave in length - seem to fare better even in local conversations - at least you don't suffer greatly from "dropouts" (dips into valleys or "flutter" (overpasses, power line wires and bridge beams) or masking caused by say - a Semi trailer passing you - now "blocks" your signal and also distorts the whip to curve/bend it in a direction off and away due to the wind whack buffeting the vehicle.

There's things to reflect (SIC) upon like; ground conductivity, ambient air noises, the amount or spacing of you from another vehicle - that plays a role in the signals reflection and or refraction along and around vehicles and even ionization losses from power lines overhead - that all seem to play a role in you working Texas when others fail.

If you use a "stubby" antenna for local and wonder about using it for Skip - well the odds of that antenna winning is smaller Less in both size and ability - than a physical length antenna used in that same spot - but then again, other factors like reflections and interactions from nearby objects plays a role in where the signal squeezes out in to a specific direction to work that ionization layer over your head.

So what I'm saying here, is odd on favorites are the longer antennas versus the shorter ones, you will always hear that, and shootouts prove their worth in their "Watergates". But then I've heard and experienced shorter antennas making the trip across the town because the operator was able to judge and utilize height and distance from - and with - other objects that can interact in their favor - to get their signal where it belongs.
  • It's painfully evident that maybe I shouldn't have even come in here to converse about this, but again, I only come in peace to offer some simple advice -
    • Shorter antennas will have less "area" to work with...but then too, understand the construction and physical limitations of the mobile setup - you can't always operate a Base Station in your vehicle - don't mean you can't try, but, Remember, odds favor the operators that take into account the physical size of radiator and do their best to provide the mounting as securely as possible to take advantage of it.
  • To segue if only a moment - this thread touches on the "electrical properties" of the various antenna "lengths" - which is fine, but you still have the shorter radiator and the claim to show they have electrical properties of the longer wavelength. Sadly it's still a loaded antenna and along with it comes the losses the system suffers from the lack of physical length and Resonance compared to the longer tuned radiator that has it in it's favor.
So in a way, even a guy with some experiences in dealing with DX from years ago, looks back in time to see others now arriving to reflect on this, at the same stopping point - asking similar questions - you are not alone - because not all the odds favorites' win, sometimes it's the guy near the back of the line riding the "stubby" that beats out all the others to win in the end.

Sometimes it's luck, others - it's a long shot, but no matter what,

"You make 100% of the "shots" you don't take." - Wayne Gretzky​

So don't give up, keep it simple - work with what you have and as you gain the experience you can then step forward into newer levels and each time you do, you have - you EARNED, the wisdom to attain that level, you just have to focus on making it better and work for you.

Don't worry...take it all in, for there's an entire WORLD out there to discover about Radio - we haven't even begun to use a fraction of it.
 
It's when SKIP rolls in, and somehow the antenna - ANY antenna - seems to work really well for some but to others it doesn't.

Andy, I'll be the first to say that for me there's no comparison with mobile antennas when it comes to the 1/4w whip. That's something I can't replicate with local s-meter tests, but I'm 100% confident the whip destroys all others with DX. I actually can't see any difference between RX s-meter strength comparing a President Texas to a 1/4 wave when testing local. None!

But the difference with DX is very obvious. And yes, I'm firm in my belief that you can tell a lot about an antenna with how it performs with DX. I didn't always think so.

I'm not talking 4-600 mile e-layer prop, either. That's gravy and my mobiles over the years tend to run with the bases all day long. It's when we're talking a few thousand miles that the 1/4 wave really shines...at least in my eyes.
 
There are better antennas than the 102 especially when going down the highway

Share more of your thoughts, Highway Man.

I always see it as a balancing act of mounting location and antenna length. In other words, I'd probably choose a President Texas on the roof over a 102" on the bumper, but I'd take a fender mounted 102" over a lil' Wil or 3' firestick on the roof...if that makes sense. I have little doubt that a 102 can perform in multiple mounting locations, but at the expense of being omni, and of course its just an unwieldy antenna.

My very minimal experience with fiberglass antennas leads me to believe that I'd be running the longest possible skipshooter on a big truck, if I had to make a choice.
 
Share more of your thoughts, Highway Man.

I always see it as a balancing act of mounting location and antenna length. In other words, I'd probably choose a President Texas on the roof over a 102" on the bumper, but I'd take a fender mounted 102" over a lil' Wil or 3' firestick on the roof...if that makes sense. I have little doubt that a 102 can perform in multiple mounting locations, but at the expense of being omni, and of course its just an unwieldy antenna.

My very minimal experience with fiberglass antennas leads me to believe that I'd be running the longest possible skipshooter on a big truck, if I had to make a choice.

On a “large car”, one still has metal body & west coast mirrors. The Sirio Perfotmer 3/8” (or Wilson 5000) may still be best (height restriction not quite favoring Predator 10k).

On a composite-body “company truck” where one can mount at mirror base or on arm, 7’ Skipshooter is the bees knees.
 
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