Re: the early teletype

On 23 Nov 2024 11:13:32 -0000, Scott Dorsey wrote:

In article <vhf1ta$165g7$2@dont-email.me>,
Lawrence D'Oliveiro  <ldo@nz.invalid> wrote:

>
On 18 Nov 2024 09:01:47 -0000, Scott Dorsey wrote:
>

It's dying out though because the modern digital modes have much
better performance under marginal conditions.

>
The more efficiently information is encoded, the more it resembles
random noise.

 
Yes, and I want some of the least efficient encodings for HF, because I
want the highest amount of data to be recovered under poor S/N
conditions. Redundancy is your friend!

There are ways to add redundancy in an optimal fashion, cf Reed-Solomon
codes. The result still looks statistically like noise.

According to John Watkinson, Reed-Solomon codes are theoretically optimum
for this purpose
<https://www.theregister.com/2013/07/18/data_storage_technology/?page=3>.