[GreenKeys] 10 Hz shift RTTY?

[Dave Horsfall]

On Tue, 25 Jul 2017, Ralph Mowery wrote:

> I don't know what the limits are, but there is a certain speed limit you 
> can send at on a given frequency.

Yep, because it increases the bandwidth.

> Don't recall what they were using to communicate with the submarines on 
> about 20 KHz, but the speed was very slow like just a couple of words 
> per minute.

Weren't they just signals to say "surface now to receive a long message"?

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."