SteveB and I coincidentally bought some dBA meters several months ago with the aim of doing some testing at the field. Finally got around to starting this on the weekend. The idea is that we might build up a list of known planes and their noise levels which can give us an idea of the racket we might be making.
All tests are done at a distance of 7.5m in an arc from the front of the plane to the back, with the highest level recorded.
Here are the results (all measurements in dBA) ...
Ambient measurement: 50
UPDATE: I've added a chart which came with the dB(A) meter I bought. It lists a collection of common sounds and their expected noise level - not really a calibrated reference, but it helps get an idea of the logarithmic dB scale.
All tests are done at a distance of 7.5m in an arc from the front of the plane to the back, with the highest level recorded.
Here are the results (all measurements in dBA) ...
Ambient measurement: 50
| Dynam Meteor (on 4S with unbalanced EDF): | 78 |
| Parkzone F27Q Stryker (stock configuration): | 77 |
| Parkzone Stryker (Modified): | 76 |
| Parkzone T-28 Trojan (stock configuration): | 68 |
UPDATE: I've added a chart which came with the dB(A) meter I bought. It lists a collection of common sounds and their expected noise level - not really a calibrated reference, but it helps get an idea of the logarithmic dB scale.
Steve Murray