Re: [amsat-bb] Sending POSIT DATA to a THD7 walkie

[Bob Bruninga <bruninga@xxxxxxxxxxxxx>]

... tell me what the UNPROTO and BTEXT message should look like for a
position of 60.18N and 11.47E? .. to show my position in clear text on
both the THD7 display  and on the APRS screen?
Per Molund
LC3WAT

> Here's how...
> LATITUDE is encoded in your UNPROTO as follows:
>  
>     UNPROTO LLmm0P VIA R0MIR   for Longitudes less than 100>  
>     Where:  LL is your latitude in degrees
>             mm is your latitude minutes using this conversion:
>                For the numeral 0 1 2 3 4 5 6 7 8 9
>                Use the letter  P Q R S T U V W X Y

*** In your case, your latitude is 60 deg 11 mins so use:
*** UNPROTO 60QQ0P VIA R0MIR
  
> LONGITUDE is encoded in the first 9 bytes of your UI packet as follows:
>  
>                 'DM!l  -/status goes here
>  
> All of the first 9 bytes must be exactly as shown including the two
> spaces.  The "status" can be any status text up to 20 characters.   
> The "D" byte is your longitude in degrees (0-99) and the "M" byte is
> the minutes (0-59) from the following table:
>  
>         0         1         2         3         4        
> VAL:    01234567890123456789012345678901234567890123456789
> CHAR:   \]^_ !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLM
>         ^^^^
>         5         6         7         8         9
> VAL:    01234567890123456789012345678901234567890123456789
> CHAR:   NOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}

*** Lets say you want to include your Name Mouland as your status text
*** Your longitude is 11 degrees 28 minutes so enter this in your

BTEXT: `'8!l -/Name is Molund 

> Or you can just type these 9 characters at the start of each line if you
> want to try to communicate via the status field.

>FOR EAST and SOUTH Hemispheres, use the actual numerals in the TOCALL
>instead of the encoded ALPHABETIC characters in these places:
>
>         UNPROTO xxxS1E VIA R0MIR
>
>This shows you which bytes to change to numeric for SOUTH and EAST.

*** So here, you must change the last character in the UNPROTO TOCALL from
*** a P to a 0 to indicate you are in the eastern hemisphere:  So your
*** UNPROTO is

    UNPROTO 60QQ00 VIA R0MIR

Good luck.  de WB4APR, Bob


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