[K3S] Side tone, SPOT discrepancy

[Elecraft mailing list]

When using SPOT to have the radio tune to a received signal, the
following is the result: the radio tunes to the received signal
correctly as indicated by the CWT graph, but this frequency is some
50-100cps below the selected side tone frequency. In other words, after
auto tuning, if PITCH is selected, the side tone pitch is significantly
higher than the received CW pitch to which the radio has auto tuned
[hope this is clear]. The particular side tone pitch selected doesn't
effect this result. EG, select 450cps side tone pitch and the radio
tunes to around 400cps Note, this is after the radio has been through
Elecraft maintenance for another problem and subsequently certified as
operating within specs. What's happening?

...robert
--
Robert G Strickland, PhD ABPH - KE2WY
[hidden email]
Syracuse, New York, USA
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You don't have the shift off center do you? Of course I've never done that before :-).
 

 
73,
 
Bill WE5P
 
 
 

 
 
 
 
 
>  
> On Oct 21, 2019 at 19:40, Robert G Strickland via Elecraft  <[hidden email]>  wrote:
>  
>  
>  When using SPOT to have the radio tune to a received signal, the following is the result: the radio tunes to the received signal correctly as indicated by the CWT graph, but this frequency is some 50-100cps below the selected side tone frequency. In other words, after auto tuning, if PITCH is selected, the side tone pitch is significantly higher than the received CW pitch to which the radio has auto tuned [hope this is clear]. The particular side tone pitch selected doesn't effect this result. EG, select 450cps side tone pitch and the radio tunes to around 400cps Note, this is after the radio has been through Elecraft maintenance for another problem and subsequently certified as operating within specs. What's happening? ...robert -- Robert G Strickland, PhD ABPH - KE2WY [hidden email] Syracuse, New York, USA ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailma!
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[Elecraft mailing list]

Thanks for the replies. No, CW is not in REV, and radio is not under
computer control [though it is hooked to the computer for N1MM and
LPan]. But, the strangeness occurs regardless of side tone pitch, band,
filter width, filter center, and whatever. I can just ignore the
selected pitch so long as the actually operating pitch is acceptable and
tunes right. But... that's an itchy way to do things, and I'd like it to
be "right."

...robert

On 10/21/2019 23:40, Robert G Strickland via Elecraft wrote:

> When using SPOT to have the radio tune to a received signal, the
> following is the result: the radio tunes to the received signal
> correctly as indicated by the CWT graph, but this frequency is some
> 50-100cps below the selected side tone frequency. In other words, after
> auto tuning, if PITCH is selected, the side tone pitch is significantly
> higher than the received CW pitch to which the radio has auto tuned
> [hope this is clear]. The particular side tone pitch selected doesn't
> effect this result. EG, select 450cps side tone pitch and the radio
> tunes to around 400cps Note, this is after the radio has been through
> Elecraft maintenance for another problem and subsequently certified as
> operating within specs. What's happening?
>
> ..robert

--
Robert G Strickland, PhD ABPH - KE2WY
[hidden email]
Syracuse, New York, USA
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