Package: minimodem

[R P Herrold]

On Thu, 3 Oct 2013, Jimmy Carter wrote:

> As an example application: Recently I made a RTTY encoder for the
> arduino (https://github.com/kg4sgp/arduino-rtty) that with a GPS I use

to answer one question there

 	Figure out why the sample rate needed to be modified 
to get accurate frequencies and baud rates and if they're 
consistent across arduinos!

Not all Arduinos are crystal controlled and so encode and 
decode loops man need to be tweaked to per device frequencies. 
Also, of you are only pulling two samples (the minimum 
required under for non-synchronous, external clocked locked 
data) by the Nyquist sampling theorem [1] for a digital (two 
state) signal.

More samples per frame will add robustness but one has to look 
for aliasing effects

> whole thing might be used for a high altitude balloon flight with a club
> that both of us are involved with (http://wiki.w8upd.org).

much fun

>> You don't say, but: maintained at Fedora as an SRPM?
>
> I don't understand exactly what you're asking. It is in the fedora
> repositories

yup -- I found it later

> Thanks! Activity is always good I guess :).

73

-- Russ herrold

[1] http://en.wikipedia.org/wiki/Nyquist–Shannon_sampling_theorem