Field strenght/swr meter.....how do I read one and what am I looking for....in recent times fooling around near an out-of-date CB
Answers: Good answer there from LARE.
He's right - RF idea is a massive subject, and there enjoy been hundreds of book written with regard to radio and aerial equivalent.
Grab a copy of the most up-to-date ARRL handbook from your local library - these books are a great souce of information.
SWR/VSWR is short for Standing Wave Ratio/Voltage Standing Wave Ratio, and essentially, is a consider of how well matched your in-flight is to your transmitter.
It's quite a bit more after that too, but to keep things to smaller quantity then 300 page here...
;)
You should always be looking for the lowest SWR reading you can capture. The lower, the better. In practice, it is very difficult to draw from an exact 1:1 match, but as close as possible is the desirable factor you are looking for.
An SWR of 1:1 finances that the aerial is PERFECTLY matched to the transmitter, and within theory will be at maximum value. A bad or elevated reading on the SWR means that the mast is not correctly tuned to the transmitter frequency, and only bit of the wanted signal is as a consequence radiated. The rest become boil dissipation in the final of the transmitter.
Better stop very soon, before I bore you to tears!
;p
swr is a consider of the antenna connection to the CB.
you requirement a jumper coax from the CB to the meter, the other side of the meter is the coax to the antenna. beside the meter in the cal position, push button the CB and adjust the needle to the cal or maximum deflection. subsequent go to the swr position and knob the CB, the needle deflection will read the SWR. It is best that within be very little deflection, however if it go as high as 3, i.e. OK. Higher readings indicate a failure in the antenna or coax.
Field strength would bear a chapter to describe how to measure and use.
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