Bryan Searle wrote, On 4/26/2014 12:56 AM:
There is no way that you can use a boom mic with a petrol engine! The
vibration will couple directly through the fuselage attached boom and
produces a huge signal. The use of ear-buds is a great idea, but the cost
is somewhat eye-watering! I just use the cheapest Ebay aviation headset
which will collapse to a reasonable size, unlike the premium headsets.
Anyway, its is very difficult to converse with a self-launching 2 stroke at
+6000rpm just behind your head, however much you pay for a
headset/whatever.

Vibration? What's that? I've used a boom microphone in my ASH 26 E for
19 years with no problems or complaints. I've used the cheapest ANR
headphones I could find in 1998, and they've worked fine, also, though
the sound reduction is quite acceptable even when the ANR is turned off.

I use the boom mike with a foam "muff" cover, and speak with my lips
touching the foam. I don't think a boom mike would work well in a noisy
cockpit if it's away from your lips.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1
- "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm
http://tinyurl.com/yb3xywl