[Boatanchors] Ranger1 w/ keyer?

[corner five]

Hello group,
A question about the Viking-Ranger-I with timed sequence keying. Mine is 
coupled to a Collins A75-2 via T/R switch.  I am a beginner learning cw 
and wish to use this fine transmitter in cw mode.  I know the ranger 
will work as is with a straight key or bug, but I have been encouraged 
to learn code with a paddle and electronic keyer (both of which I now 
have, and I can go to the straight key as needed too).  However I also 
read that the Ranger uses grid block keying and will apply about -50v to 
the key contacts @ low mA.  Fine for straight key contacts, but may 
damage an electronic keyer.
So... Any relatively inexpensive suggestions to enable use of the 
keyer?  Kit, ready made, build my own circuit with parts list and 
schematic, different keyer?  I have see a few kits out there but they 
seem to now be unavailable.  Ideally this solution would include 
full-breakin, but I'm fine with semi-breakin if that's an easier and 
less expensive direction.  Please correct any errors I may have made in 
my assumptions.
Thanks in advance for advice.  c5.