H10-60 comes with a cord that can be changed: straight or coiled for fixed
wing, or coiled helo cord. H10-66 is the dual-impedance model.
I have a H10-60, the only thing I don't like about it is the plug on the
detachable cord is long enough (strain relief) that it sometimes catches on
your jacket collar or shoulder belt when you try to look left. I have gotten
used to it, but it can be really distracting at first.
"john smith" wrote in message
...
I believe the h10-60 are for Helos only. Are your flying rotary wing or
fixed wing?
Michelle

I thought that, too, when I first saw the posting.
I went to the DC homepage to check.
10-60's come in three flavors now. Fixed, coiled cord helo, and dual
impedence.