[BRLTTY] terminal control codes

[Brian Tew]

Hi,
Looking for suggestions. I am trying to run a program called tlf 
which controls radios. When I start it the output is full of terminal control codes.
This is true for brltty with my display hooked to the pc via usb cable,
but it also happens when i run the program from an ipad with ssh over wifi.
It is a curses based program.   running brltty 5.3.1 on ubuntu 16 on an x86 desktop.
Hims braille sense u2 display.
I tried changing TERM from linux to vt100, same problem.
Any ideas on what I might try? Thanks.