[Elecraft] SMH command behavior

[Wayne Burdick]

Hi Nate,

This is a side-effect of the current SMH command implementation.  
Removing the side effect is on my list. But SMH is functioning well  
with "S-meter Lite," the original target application. I'm hoping that  
for now, you can tame it for your application.

73,
Wayne
N6KR

On Aug 26, 2011, at 11:04 AM, Nate Bargmann wrote:

> I realize this is still a somewhat experimental command.  I just  
> loaded
> FW 4.39 to play with the SMH command and integrate it into Hamlib.
> Playing with the command in the K3 utility I find that when SMH is  
> sent
> a previous meter value is returned and then upon a second sending of  
> the
> command the current value is returned.
>
> For example, powering on the K3 with my S-meter showing S6, I send  
> SMH;
> and receive SMH000; from the K3.  A second SMH; returns SMH030; as  
> would
> be expected.  Setting the RF Gain to show S9 results in SMH029; and  
> the
> next SMH; results in SMH042; as expected per the release notes.
> Cranking the RF Gain to full S-meter scale once again reults in 0042  
> the
> first time and 104 the second.  Going the other way and opening the RF
> Gain so the meter shows S0 the first query results in 104 and the  
> second
> 004.
>
> Is this caching intentional?  I would expect the command to return the
> S-meter reading at the moment it was received by the K3.  As some
> software may have several tenths of seconds between queries of the
> S-meter, this would result in the software receiving erroneous or much
> delayed information.
>
> I find no such delay with the SM command.
>
> 73, de Nate N0NB >>
>
> -- 
>
> "The optimist proclaims that we live in the best of all
> possible worlds.  The pessimist fears this is true."
>
> Ham radio, Linux, bikes, and more: http://www.n0nb.us
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