Re: [Electronics_101] Q about ultra sonic pest repellers
> The reviews I have read say they are worthless.That's too bad but probably correct. After I posted the question, I
went searching on youtube. I usually find examples of stuff being
tested. But NOT ONE of these units actually working to repel mouse or
rats. Of the video showed how these things didn't do any thing, and he
went on to catch mouse in the room with U.Sonic repellers. If they
worked there would be none in the room.
I'm still NOT convinced that this kind unit won't work. We KNOW that
there are high freq teen repellers (I think the unit is called
"mesquite"). I have a feeling the people who made these units have NOT
done any research at all.
I saw a TV show called "Weird Connections" and the story covers how the
audio researcher found that ONE SET of freq that drove teens crazy - and
then pumped up the volume. The teens got incredible hear-aches
standing close by and eventually scattered.
My wife still has most of her hearing freq. One day I downloaded
freq-sine wave generator and played it through my head phones. I could
not hear anything about 18Khz but he still could. And in fact she said
it felt like the sound was punching her in the ear (like a gun shot near
an ear). And it wasn't all the freq but just few.
So I'm figuring there might be some freq + amplitude that should work - except it might be dependent on the AGE of the mouse!!!
[Non-text portions of this message have been removed]
- Rug rats.
--- In Electronics_101@yahoogroups.com, Ross McKenzie <valusoft@...> wrote:
> On 4/12/2011 7:47 AM, orvillefpike wrote:
> > You can hook up an ultra-sound transducer to a 555 and vary the frequency to see if there is a particular frequency that annoys the mouse.
> > That's how I did it, with my nephews and nieces,
> ... your nephews and nieces are mice?