Hello all, This is KG4SGP, Jimmy Carter. I just started maintaining a package called minimodem (General Purpose audio FSK modem) and was wondering if you all thought it should be added to the list of packages for the Special Interest Group. KG4SGP - Jim
yes please On 10/03/2013 02:39 AM, Jimmy Carter wrote:
Hello all,
This is KG4SGP, Jimmy Carter. I just started maintaining a package called minimodem (General Purpose audio FSK modem) and was wondering if you all thought it should be added to the list of packages for the Special Interest Group.
KG4SGP - Jim
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On Thu, 3 Oct 2013, Jimmy Carter wrote:
This is KG4SGP, Jimmy Carter. I just started maintaining a package called minimodem (General Purpose audio FSK modem)
seems like http://www.whence.com/minimodem/ looks like it would be useful with a high Z PSTN line tap ( prolly through an op amp as a simple 'follower', to avoid causing the line to be 'off hook') feeding the computer audio in line You don't say, but: maintained at Fedora as an SRPM? and WOW -- first post I have seen in a 'coon's age' on this mailing list. Actually the first my records show since I subscribed other than procedural matter welcome As I lack the ability to do the edits you seek, I'll await a reply by another 73 de wb8sky
HI,
seems like http://www.whence.com/minimodem/
Yup, that would be the one. Its a neat little modem, nice and simple. It can be set up to receive/transmit different forms of FSK. RTTY, SAME etc. It doesn't implement framing for many things (That is though it can receive bell202 at 1200bps (like in APRS) there is still a ax.25 frame + APRS that would need to be decoded). 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 send a pre-formatted RTTY string with the location. A friend of mine wrote a neat little app using minimodem as the FSK decoder that parsed the string, got the location and then plotted it on goggle maps. The 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).
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 (that is you can "yum search minimodem" and it will come up for f18 - rawhide). There are SRPMs at http://pkgs.fedoraproject.org/cgit/minimodem.git/
and WOW -- first post I have seen in a 'coon's age' on this mailing list. Actually the first my records show since I subscribed other than procedural matter
welcome
Thanks! Activity is always good I guess :).
As I lack the ability to do the edits you seek, I'll await a reply by another
73 de wb8sky
I always appreciate the replies, 73 de KG4SGP - Jim
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
participants (3)
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Ben Williams -
Jimmy Carter -
R P Herrold