I'm at my whits end, for the life of me I don't know how to make the
HM-14 produce DTMF tones with the IC-48A.

Usually you hit PTT and dial away, but i'm getting zilch. Is there
some trick on this rig?

The IC-48A was my Dad's but he's SK now so I cannot figure out how to
make this produce DTMF, the manual doesn't even mention it.

HELP!