Question about your Lost Model Alarm
Having tromped through the woods for about 4 hours in an unsuccessful attempt to find my plane, I have decided that I need a Lost Model Alarm.
I hope you can give me some advice.
The models I have found include:
this one on eBay http://tinyurl.com/nt3q7j
I am looking for a LOUD model (preferably over 100db).
There is quite a range of prices and many of the Lost Model Alarms don't indicate db.
Can you share with me what I should be looking for? Please feel free to plug the model you are selling!
Thanks in advance for your advice and counsel.
my 2c worth.
LOUD is good, the louder the better, also low power consumption, you don't want 200db for 5 seconds, may be even something thats intermitent beep would be better.
I'm sure Paul will jump in with some real advice :)
Well, that didn't seem to work.
Anybody have an email address for Paul?
Put a set of these on & hear any alarm from a far...RTR
I hope that I don't have to resort to this. If I have to spend that much money, I think I would prefer to go with http://www.brickhousesecurity.com/child-locator.html.
I haven't heard from Paul. Maybe he has gotten out of the LMA business?
Thanks for taking an interest in my project.
I actually didn't see this thread, sorry.
First up, getting to 100dB means you're going to require a physically very large unit and will need an external battery pack to drive it (3S lipo would be typical). It can be done, just that it's quite large.
The units I have are 85~92dB units.
You're not wearing those LMAs in your ears are you... (pierced ears ;) ) Okay, bad joke, just that I see so many people wearing strange earings at this time of the year.
On a more serious/legitimate note, I'm finding that there's a bit of a variance between some of the buzzers, from the same batch (I buy them in bricks of 500 now), if the frequency moves +/-5% from the peak resonance it can seem quieter, though the dB rating still seems quite close. There's the other problem of how our own ears perceive the loudness across a frequency spread. A third factor, and one which makes a BIG difference is the chamber in which the buzzer/LMA is installed. I've found just cupping my hand around the buzzer can significantly raise the perceived output level to pain levels :wince: .
btw Oldpilot, didn't realise you were hard of hearing... nice to see I'm not the only one.
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