coils on mobile antennas

[noisemaker]

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..

[Mistah Gravy]

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..

so,without any real technical background i ask this-you say that a coil antenna is a better all around out/in-put tx/rx than a tall whil like i've got on my Wilson 5000? i thought that the taller the whip,the better it would tx/rx? i do like the coil antennas but always thought and believed that the higher you are the better you get in and out,no?

[Mr.5150cbrn]

not really , the higher placement of the antenna to a given vehicle is usually best , with regards to amount of available ground plane .
not nesisary the given length of the stinger
as in regards to the mfj anyliser " real technical background" can be curcumvented as the mfj does all the work

[noisemaker]

Gravy- the wil5k is a base load. The coil antennas are more or less a center load. Though the theory is "go big or go home" isnt always the best. depends on vehicle, conditions, blah blah.. Elevation is definitely a key player.

Im going to perform a bunch of real tests with a bunch of different antennas, vehicles, and mounts -and see which one shines. Im also going to be adding a mini VNA to my arsenal of tools to see REAL TIME performance side by side (gain, take off angles, patterns, etc). Unlike others that make pretty spread sheets, ill take pics/video right from the source. AND I will make sure the skip isnt rolling when these tests are performed because testing/tuning while the D layer of the ionosphere is hot and opened is not optimal and will yield dud results.

so,without any real technical background i ask this-you say that a coil antenna is a better all around out/in-put tx/rx than a tall whil like i've got on my Wilson 5000? i thought that the taller the whip,the better it would tx/rx? i do like the coil antennas but always thought and believed that the higher you are the better you get in and out,no?

[JesseJamesDallas]

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..

Think your antenna analyzer needs some tweaking....

From the results cbradiomagazine found, the 102" Whip is the most broad banded...I will say i have never done a test like they did using a 102" whip and several different coiled antenna's, but I see no reason to dispute their findings since what they posted on the Predator 10K. is just what I see on mine.

http://cbradiomagazine.com/Feb%20200...0for%20you.htm

[noisemaker]

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.

Think your antenna analyzer needs some tweaking....

From the results cbradiomagazine found, the 102" Whip is the most broad banded...I will say i have never done a test like they did using a 102" whip and several different coiled antenna's, but I see no reason to dispute their findings since what they posted on the Predator 10K. is just what I see on mine.

http://cbradiomagazine.com/Feb%20200...0for%20you.htm

[SkipShooter]

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