I took the OPs post as width even though they kept saying IF for some reason.wait...
100khz wide or
100khz step ???
i went looking and found these
Available Bandwidths: FM 6/15/30/100 kHz
Note that there are 3 pages of frequency step values from 10Hz up to 500kHz
I mean : memorize a freq. and a IF=100kHz in a memory channel.... set every freq. to have IF=100kHz .....
I mean : doing that i get only audio noise , even if IF100kHz is set on the DV10 display... ..... but do not work very well ..... .