[RTTY] PSK31 is faster (Was FD RTTY Question)

[Kok Chen]

On Jun 27, 2012, at 11:05 PM, Tom Osborne wrote:

> I had a model 28 here 'back when', but it was only a 60wpm machine (I 
> think it was 45 baud).

Aha, Wikipedea has the answer:

http://en.wikipedia.org/wiki/Teletype_Model_28

The KSR28 is a Baudot machine.

By using Google, I then found this:

http://simh.trailing-edge.com/pdf/pdp18b_doc.pdf

The first 18-bit CPU from DEC (PDP-4) indeed uses the KSR-28 and Baudot encoding.

This next article,

http://www.soemtron.org/pdp7history.html

mentions specifically that the PDP-7, successor of the PDP-4, changed from using Baudot to using ASCII.

73
Chen, W7AY