[Elecraft] SM$ command

[Stefan Jansen]

Hi all,

Thank you for your detailed answers about the S-Meter on the KX2. With that info I can now implement my whitesticker-friendly S-Mmeter for the KX2.




Vy 73 de Stefan, DK7STJ

--
Stefan Jansen    ***    E-Mail: DK7STJ at darc.de

> Am 02.03.2022 um 00:15 schrieb Jack Brindle <jackbrindle at me.com>:
> 
> Stefan;
> 
> The KX2, like the KX3 and K3, have S-Meters with 21 bars. These go from S1 (with just one bar showing) to S9 (9 bars) it then has 12 more bars corresponding to S9 + 5 times the number of extra bars showing. So, if you have an S9+20db signal, there will be a total of 13 bars showing. If you use the K31 setting (set k3 to 1 with the K31; command) the response to the SM command will correspond directly to the number of bars showing, from 0 to 21. Note that the first bar above S9 represents S9 + 5db.
> 
> Without the K3 setting (K30;), that range is cut down to 0 - 15, which is closer to the K2 S-Meter, which has only 10 bars. On the K2, S9 has 6 bars. Above S9 the range goes from S9 to S9 + 40 in  4 bars. In the SM command this is changed to go from S9 (at 6 bars) to S9 + 60 (15 bars). The bars above S9 represent 6.66 db, so S9 + 6.66db would be 7 bars, S9 + 20 is 9 bars, and so forth linearly up to S9 + 60 at 15 bars.
> 
> I hope this helps. Using the K31; option really helps here, the S-Meter makes more sense, although having a computer translate for you helps a lot.
> 
> 73,
> Jack, W6FB
> 
> 
>> On Mar 1, 2022, at 2:38 PM, Stefan Jansen <DK7STJ at darc.de> wrote:
>> 
>> Hi Andy,
>> 
>> Yes, I should have been more precise in asking my question. OK, thanks to your answer I know now that the SM$ command might report exactly the number of dots that are displayed on the KX2 for the S-Meter. But as I am a white sticker, I cannot read that display and do not know to which S-meter values the dots correspond unless it is written in the programmer’s reference. And there they only tell the values for 6, 9, 12, and 15, but not for the other values.
>> 
>> So if anybody can help, I would be glad.
>> 
>> 
>> Vy 73 de Stefan, DK7STJ
>> 
>> --
>> Stefan Jansen    ***    E-Mail: DK7STJ at darc.de
>> 
>>> Am 28.02.2022 um 18:43 schrieb Andy Durbin <a.durbin at msn.com>:
>>> 
>>> Don't have a KX2 but Kenwood meter interrogations return the result as "dots" corresponding to the number of dots that are "lit" on the LCD meter scale.
>>> 
>>> If the KX2 uses an LCD meter it's likely the same.
>>> 
>>> Andy, k3wyc
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