Im looking for a Fm Transmitter that is FCC approved. ... I perfer a USB unit however, not required.
Hmm. Most of us here have been purchasing devices designed overseas that are not FCC approved (not meaning they're necessarily illegal, just that the makers didn't want to bear the cost of getting the device approved).
The EDM, for example, is not FCC approved. Great transmitter by all accounts, one that doesn't exceed FCC regulations, just not approved (this device was designed in South Africa, for example).
I think you can figure on an added $10-$25 to the retail price of a device for the FCC approval.
As far as I can tell, there is only one USB/FCC FM transmitter, the UX300 from CanaKit. There are some US retailers who sell it with an FCC approval number, while there are others that sell it without; those that sell it with the number are charging $10 more than those who do not. CanaKit clearly states on its web site that it is approved only for Canada.
I have purchased other CanaKit products and found them just fine and the specs for the UX300 look good, but I have no personal knowledge of this particular device.
\dmc