OK Kent.  The stock mic that comes with the 590 has up/down buttons 
which you can change to pf keys if desired, and you can always use any 
old headphones laying around the house until you get a handle on   what 
you want to do and what direction you want to go.

I'm not familiar with the Radiosport headset, just do your homework and 
shop wisely.

73, Steve KW3A

On 8/18/2013 6:04 PM, Kent Plemmons wrote:
> Hi Steve,
>
> In retrospect after hearing about the array of other options available, I
> can see that this type of headset/mic with pf keys isn't as necessary as I
> had thought.  I do need to use headphones but didn't know that the pf keys
> could be emulated on other devices such as boom mics or key boxes.  My
> primary thought was to be able to hear as much as possible in order to
> control and operate the radio as I could.  It sounds like there are other
> ways to accomplish this in a more simple manner.
>
> Kent
>