Em

[em101]

Hello,

I am trying to transmit EM waves through to inner diameter of a metallic pipe. I do know that there is extensive EM absorption at high frequencies where as the absorption rate is a lot lower at low frequencies.

I used really small radios at different frequencies by placing them at the two ends of the pipe filled with fluid. Obviously I went a lot further at lower frequencies than at higher frequencies.

Then I came across the topic of waveguides, and learnt that microwaves are extremely directional in waveguides. I do no that the transmission of microwaves is almost close to nothing in open water. But will implementation of waveguides by anyways help enhance the range of communication!!!

Is there a certain way I can build one!!

[GAHD]

you're gonaa need to learn Maxwell's equations. that's a whole other thread.