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[aprssig] Dear Mr Kenwood (MicE decoding)

Chuck Gooden Chuck.Gooden at comcast.net
Tue Dec 29 01:03:16 UTC 2009


Have you considered you may be using the wrong hardware then?  Your a 
software guru...deal with it.

Scott Miller wrote:
>> Done.  Plus a little cleanup here and there...  It was designed
>> to be a pretty simple manipulation of bits.  A table was never
>> intended.  That was just how Ian decided to represent the
>> algorithm in the spec making it appear overly complex when in
>> fact, it is a very simple offset of bits.
>
> And how would you suggest implementing the speed and altitude?  Where
> speed = (1.08^x)-1 and altitude = 1.002^x?  Yeah, it's easy on a PC
> where you've got floating point support and memory and CPU cycles to
> burn.  Not fun on an 8-bit MCU that more often than not doesn't even
> have a hardware multiplier.  Certainly not as simple as the single
> QBASIC statement needed to handle it might imply.
>
> Scott
> N1VG
>
>
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