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alexmoose 9th August 2008 08:12 PM

Horn for Cell phone
Hello, diyaudio friends!

I live in the dense woods (not quite a forest) but it knocks out all cellphone reception, to combat this, I built a small Parabolic reflector out of an Asian noodle strainer that boosts me from 0 bars to 2-3 bars. when someone calls me, I can't move the phone from the dish otherwise I loose the signal, so I was thinking, what if I make a smaller horn inside the reflector dish so I could hear the person on the other end?

I could use the speaker phone, but the moment i move my phone at all I drop the call!

I need to make it out of paper, or something else that won't interfere with the focal point of the large dish, but I am not educated in the ways of horn speakers, I know that I can assume the Cellphone is a point source of sound because the baffle is so tiny (right?) and I should make a horn that models an Exponential curve, perhaps the top end of a 2-liter Pop bottle? any ideas?


peter_m 9th August 2008 10:20 PM

You can try to find an external antenna that will fit your cell phone:

You can get a blue-tooth ear-bud:


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