I would like to first start off by saying that Im not writing this to start any fight or name calling and that i am very uneducated when it comes to noise. I think that IMPBA does need a noise rule but because of the fact that I am uneducated about noise I am not sure that Iam for noise DB limit. I am sure that if someone could provide me with some factual information that I could come to my own conclusion. I invite constructive criticism on anything that I say.
We know for a fact that the speed of sound changes with altitude, I would asume that db readings would change with altitude as well. Is this correct? How much change would you see from a couple 1000' feet of elevation change?
If the above is true I would suspect that tempature would also make a difference as well. has any one tested this?
I have observed at diffrent ponds that noise leavels seem to change according to it shape and surrondings. I am not using a db meter this is just an observation. is this true. I raced or practiced on 10 differnt ponds in 5 differnt states last year and none of the surrondings were the same. Has anyone seen any changes with there db reading on differnt ponds?
It seems that the range we are talking about boats is from 115 db's to 95 db's. The meter that everyone seems interested in using seems to be the meter from Radio Shack Part # 33 - 2050. Here is the link to the owners manuel for this model
http://www.radioshack.com/images/ProductCa.../OME33-4050.pdf
It states in this manuel that this meter has a +/- 2 db at 114 DB. With the above meter and range of 115 db to 95 db there is a 20 percent range with this meter which seems a bit exsisve to me.
What I dont want to happen to me or anyone else is to be legal at one pond then drive half way accross the country to find out that I am illegal. This is not good for racers or race clubs and could possible due more to demote model boating than the current rule as it is written.
I am only intersted in known facts and actual testing. If you can provide either please bring it to the table so that us uneducated boaters can put there fears to the side or decide that they are legitamate.
Sincerely,
Allen Waddle