[gembud] Converting from GRIB1 to GRIB2

Hi,

I produce Wind and Temperature charts from GRIB1 using dcgrib2 and gdplot2.
Now I would like to use GRIB2 to take advantage of the additional levels.

I tried the naive approach and simply fed a GRIB2 file to dcgrib2 but It didn't 
work.
Do I have to decompress the file first?  Can anyone outline the workflow needed
to produce a GEMPAK .gem model?   

 I obtain my data from SADIS.  Here is a sample header:

        
165
YUXC85 EGRR 080000
GRIB

Thanks,


Mark Hughes
Frequentis California, Inc
201-B Calle Del Oaks
Monterey, CA 93940
USA
Fax: (831) 392-0429
web: www.frequentis.com
E-mail: Mark.Hughes@xxxxxxxxxxxxxx