I can duplicate the behavior here with my Apache 7000 and Thetis.
Using RC2 here.

Both the Tune button and Enable Tx follow the 500hz offsets.

Both Fake It and Rig Split behave this way.

Split=None works correctly.

Mike W9MDB








On Thursday, August 3, 2023 at 03:13:30 PM CDT, Andreas Junge via wsjt-devel 
<wsjt-devel@lists.sourceforge.net> wrote: 





Joe,

Yes, I have read it. I also read Bob's (KA1GT) article. Please have a look at 
this short recorded screen session:

https://icecreamapps.com/v/fkkg3dt

Either right-clicking into the wide graph and setting the offset - which should 
not work since it should be fixed to 1500- or by previously being in Q65 with 
an offset will cause this. 

It follows the pattern of @0-500 offset will subtract 1500Hz, @501-1000 will 
subtract 1000Hz, @1001-1500 will subtract 500Hz and so on until +1500Hz

I think this feature is used to keep the tones in the middle of the TX 
passband, but it also requires a frequency shift of the generated tone which 
does not happen because it's set to a fixed 1500Hz. 

In short, yes, there should not be a frequency shift on TX in the first place 
and that is a bug IMHO.

I enabled logging for the rig transactions and the radio is indeed commanded to 
go to the wrong offset on VFO B it should be 144065000.
 
          rig_set_split_freq called vfo=VFOB, curr_vfo=VFOA, tx_freq=144064000 

It works fine when I right click on 1500Hz in the wide graphs or when 1500 was 
selected in the previous mode. 


 73, Andreas, N6NU

On Thu, Aug 3, 2023 at 11:45 AM Joe Taylor via wsjt-devel 
<wsjt-devel@lists.sourceforge.net> wrote:
> Hi Andreas,
> 
> Have you read the full-length paper about Echo mode in WSJT-X 2.6.0 and 
> later? See item #34 in the list of WSJT-related references here: 
> https://wsjt.sourceforge.io/refs.html .
> 
> As described there, in Echo mode the transmitted audio-frequency tone 
> should always be 1500 Hz.
> 
>         -- 73, Joe, K1JT
> 
> On 8/2/2023 10:47 AM, Andreas Junge via wsjt-devel wrote:
>> I posted my initial question on the groups.io list as well, but Charlie, 
>> DL3WDG suggested to post it here as well.
>> 
>> This is reproducible. In Echo Mode right click in the Wide Graph and select 
>> “Set RX & TX Offset” it seems to change the TX.
>> 
>> Steps:
>> - In the radio settings set "Split Mode" to Radio or Fake (No difference)
>> - Select "Echo Mode"
>> - Select 23 cm -> 1296.065 (Default)
>> - Select Doppler Tracking mode to "Own Echo"
>> - Display shows 1296.065 +/- My Doppler
>> - Enable TX
>> - The frequency will initially show 1296.06500 and the immediately change to 
>> 1296.064500
>> - On RX the frequency goes back to the correct 1296.06500 +/- Doppler
>> - The Echoes will be shown at the @1000 offset and not @1500, which is 
>> expected, but wrong.
>> 
>> After a few tries I found that selecting “Set RX & TX Offset” in the Wide 
>> Graph
>> 
>> If I click on @1000 I get 64.5000, @1500 65.0000, @2000 65.5000
>> 
>> The audio should be fixed at @1500 and the Set RX & TX feature should be 
>> ignored.
>> 
>> I think this if half of the feature that keeps the audio in the sweet spot 
>> of the bandpass? However, it does not do the necessary 2nd step of shifting 
>> the audio to adjust for it.
>> 
>> 73, Andreas, N6NU
>> 
>> _______________________________________________
>> wsjt-devel mailing list
>> wsjt-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/wsjt-devel
> 
> 
> _______________________________________________
> wsjt-devel mailing list
> wsjt-devel@lists.sourceforge.net
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> 

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