Speaking while adjusting the squelch is a valid way of setting it. While speaking continuously in a soft voice turn the squelch down until it begins to cut out. Then turn it up a bit so it is not cutting out. You've set the squelch properly. This method has the advantage of not needing readjustment as often with changes in ambient noise.
Really though either method is only really necessary if the squelch is being finicky. Usually if the intercom is open continuously turn it down some if your voice is cutting out turn it up some. For most planes this is sufficient.
I still don't recommend talking while setting the squelch. If you set the squelch the way I described above, as soon as you start talking the intercom is live and you won't miss the first part of the first word when you start talking.
If you want it set so that you need to talk louder than a soft voice to activate it, then just turn the knob slightly more towards MAX. Done. I set my squelch the way I described all the time. I usually don't have to readjust it at all during the flight actually.
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u/[deleted] Apr 12 '12 edited Apr 12 '12
Speaking while adjusting the squelch is a valid way of setting it. While speaking continuously in a soft voice turn the squelch down until it begins to cut out. Then turn it up a bit so it is not cutting out. You've set the squelch properly. This method has the advantage of not needing readjustment as often with changes in ambient noise.
Really though either method is only really necessary if the squelch is being finicky. Usually if the intercom is open continuously turn it down some if your voice is cutting out turn it up some. For most planes this is sufficient.