[aprssig] mic-e: technical info or source code ??

Scott Miller scott at opentrac.org
Wed May 29 15:57:15 CDT 2013


Mic-E is just one format of APRS, which is normally used over 1200 baud 
AX.25.  You'll want to look up the APRS specification.

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CDAQFjAA&url=ftp%3A%2F%2Fftp.tapr.org%2Faprssig%2Faprsspec%2Fspec%2Faprs101%2FAPRS101.pdf&ei=PWumUbNYqIyKApGbgZAM&usg=AFQjCNFX9MVpV4dnbbqccRlYOCHDT45pcw&sig2=2fpi2kGNFp0UBP-TgljDxg&bvm=bv.47244034,d.cGE&cad=rja

There are plenty of open source APRS clients out there.  My OpenTracker 
series will decode Mic-E, but won't encode it because I feel that Base91 
is a better solution.  The devices will still work as mic encoders, 
sending a burst when you unkey, just not in the format normally referred 
to as Mic-E.

Scott
N1VG

On 5/29/2013 1:28 PM, Kristoff Bonne wrote:
> Hi,
>
> I'm trying to find the technical documentation on the mic-e protocol.
> (i.e. the 300 ms burst to be send at the end of a voice transmission on
> a repeater).
>
> There is a webpage on info.aprs.net, but that does not even mention the
> modulation scheme, baudrate, etc.
>
> Is the open-source code available for decoding and encoding mic-e
> transmissions? Is there an open-source hardware implementation of it?
>
>
>
> 73
> kristoff - ON1ARF
>
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