new tenns

[rambos420]

What is this I think it is for celluler
thanks in advance it has n connecton

[bigbadbrother]

It looks like CB.

[runamok]

It looks like a liner antenna.

[Terryl]

If it has an "N" type coax connection then it's for use in a frequency band above 450 MHz,(UHF) it could be 900 MHz cell band, or even 2.5 or 5 GHz WIFI, was there a manufactures name on it?

Looks to be a standard dipole antenna, what gain it has is anyone's guess,(standard dipole gain starts at 3.2 dBi) special equipment would be needed to sweep it for the band(s) it could be used in if not marked.

[jvvh5897]

The reason we can't tell by inspection, is that it seems to be a whip antenna, but they can be coiled to make for a shorter antenna. We can't tell for sure if it is coiled or not. If not coiled then you can just use the standard wavelength equation to figure out the frequency of use, in meters that is: freq = 300/wave-length and if a dipole then you multiply the physical length by two to get wave length. If a quarter wave length then multiply by 4.

[Terryl]

It could also be a 5/8 wave co-linear, or a multi stacked dipole,(for higher gain then 3.2 dBi) I have seen many a type of antenna inside the fiberglass tube or shroud.

Many ways to tell but the best one is with a wide band RF generator attached to it, and a spectrum analyzer attached to a calibrated wide band antenna, sweep the bands till you find a peak output on the antenna under test.(all this has to be done in a screen room)

[Terryl]

A good close up of that label may tell us something.

[runamok]

I have seen something like this used for cb radio way back and when powered you can hold just a florescence bulb beside it and it would light up.