[GreenKeys] Reading Teletype specifications is boring or not?

[Jim Cooper]

On 29 Dec 2019 at 13:55, Jim Haynes wrote:

> I'm not sure, but I don't think the
> LAXD would be appropriate for a
> high-to-low 28RT.  High-to-low means
> a BRPE high speed punch and a low
> speed reader.  I don't know if a
> crawling head reader could get right
> up to the punch block of a BRPE. If
> it could there might be little use
> for it to operate that way since the
> BRPE is going to spew out a message in
> a very short time and the crawling
> head would be flipped away as soon as
> a message was punched. 

Not really...  LAXD is very appropriate in 
an R/T cabinet/setup ... suppose traffic 
is coming IN on a 100wpm circuit and is to 
be relayed to a 45.5 baud circuit ... the 
message comes in and gets punched; the 
crawling head 'falls away' from the punch 
block as a tape loop forms in the bin; the 
incoming message stops, the punch stops, 
and the crawling head continues to send 
from the tape loop until it is back against 
the punch block, where the switch stops 
the head from transmitting until another 
character is punched.  ["high speed" does 
not necessarily mean a BRPE on the incoming 
high speed side; high speed can be as I 
described above.]

w2jc