On Sun, 11 Dec 2005 19:54:28 GMT, "Daphne + Dave"
wrote:

What's the difference? Looks the same to me......Have the TRC-490 myself
but, I'm located in CANADA. Must be a model recognition difference? It's
FS also. thanks

They look the same but are different.

The 458 was the original and converted easily.
The 490 used a different PLL but could still be converted.