[TenTec] Jupiter CAT question

Carl Moreschi n4py2 at earthlink.net
Fri Jul 13 11:15:03 PDT 2012

It returns a 2 byte (4 character) hexadecimal number. The first byte is 
the S units in hex.  The second byte is the fraction S units in 256ths. 
So 0F23 would be 15 sunits with a fractional part of 35/256.  The 35 is 
decimal for hex 23.

I hope this helps.

Carl Moreschi N4PY
121 Little Bell Dr.
Hays, NC 28635

On 7/13/2012 1:40 PM, Martin Ewing wrote:
> Hello, all.
> I'm using a Jupiter with Hamlib.org interface software, but the Jupiter
> driver (which I'm maintaining) needs to know how to deal with the S-meter.
> The Ten-Tec programmer's reference (v1.1) claims that "The data format is a
> 4 byte ascii string. The upper part of the number is the signal strength in
> ‘S’ units while the lower part is the fractional part of the signal in ‘S’
> units. For example: if the radio returns the string ‘S0356’ the signal
> strength is 3.56 ‘S’ units."
> But this is not what is coming back to me (firmware v1330-538).  I get hex
> digits ('0' - 'F") not just decimal.  Other CAT functions seem normal. If
> someone knows the correct way to interpret the ?S results, I'd appreciate
> the info.  Otherwise, I will have to do some reverse engineering.  Doable,
> but a pain...
> TIA&  73
> Martin AA6E

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