[GreenKeys] Two questions

[Rokumon Cat]

Hi,
 
I have two TTY related questions. 
 
First, what would be a good rack mount, tube (non-solid state) comms receiver for shortwave to be used to receive RTTY? Yes, I know that the Collins R-390 is the cat's meow of radios, but I cannot justify spending four grand on a radio at this time. 
 
Second, does anyone know of a tube based AFSK keyer type or even just a circuit? 
 
Thanks again for the info!
 
Best,
 
Joe