[time-nuts] Need help with transformer core

[cdelect at juno.com]

I'm trying to built a DC to DC from an existing schematic for a frequency
standard I'm working on.

The transformer core is identified as an Indiana General F1152-1-6

The Dc to Dc is running at 22Khz and maybe 20 Watts.

Can't find any info that would allow me to decide on a proper substitute.

Anybody out there have any data on this?

Thanks.

Corby