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Old March 23rd 08, 03:13 AM posted to rec.radio.amateur.moderated
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Posts: 877
Default WPM to BPS calculation

On Mar 22, 1:04�pm, Klystron wrote:
wrote:
So if the word PARIS is sent 50 times in 1 minute, that minute is
divided into 2500 dit times. Which is 41.66 bps.


� �It still seems like an awfully slow data rate.


Compared to what? And for what application, in what bandwidth?

If you have a pile of data to send, or a picture, etc., 41.66 bps is
quite slow.

But for a real-time conversation, 41.66 bps isn't all that slow. The
average person doesn't talk or type at a sustained speed much faster
than 100 wpm. 50 wpm isn't that much slower.

I have seen people
throw 14400 baud modems in the garbage because they
considered them to
be so slow as to be worthless.


11 years ago, when I first went online, it was with a 56k modem. I
gave up on dialup modems several years ago and went broadband. I don't
think anybody who has a choice is still using dialup.

But that's because the options exist, with no significant downsides. A
14400 modem uses the same phone line as a 56K modem. DSL can be run on
the same phone line and not tie it up for telephone calls.

Operating on the limited bandwidth amd high variability of the HF
amateur bands is a completely different thing.

A data rate of 42 bps is about 3 orders
of magnitude slower than that. It just seems inconsistent
with the way
that so many hams have fought tooth and nail to hold
onto Morse and to
hinder the move toward digital modes.


A lot of hams like Morse Code and use it on the air. It has a lot
of advantages. Why should they give it up?

And how has "the move toward digital modes" been hindered by hams?

73 de Jim, N2EY



 
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