Date   : Thu, 10 Mar 1983 12:46:48-PST
From   : goldfarb.ucf-cs@rand-relay.arpa
Subject: Re: Rainbow 100 and file transfer

There is a noncommercial product similar to the one you  describe,
Jerry.  Written in BDS C, it is called PH.C.  It, too, hexifies the
source (binary) file for transmission to the target machine, which
need only have PIP to receive it.  It has been around for about a 
year and is available on better RCP/M systems everywhere.  Offhand,
I believe it is on MC, but I don't have a copy of the directory handy
while I'm writing this.