The Astatic D104-M6B will work very well with that radio.

http://www.eham.net/reviews/detail/1795

"K. Williams" wrote in message
...
: I have a Cobra 29 LTD WX that's about 7 years old, but has never been
used.
: What amplified mic is good with this radio? Does the radio need to be
tuned by
: a shop for it to work well?