Mousser has them, although they seem to be a very ordinary P channel
FET.

W4ZCB


Would 2n5461's work. IIRC they are basicly the same fet, different IDSS
maybe

Digi has them as well, and I have some on order. Doubt there are any
surprises, but hope springs eternal. Suspect that the "Tech Correspondence"
dept didn't have the clout to get the attention of the lab. Will let you
know in about a week.

W4ZCB