I just checked my computer soundcard settings and followed your procedure to 
set up the radio, the computer and the tranceiver, resulting in a seemingly 
dramatic enhancement of operation efficiency. For one thing (operator error, no 
doubt), I've never checked that the sound card sample rate was 48kHz 16-bit 
before, and of course it was not. Thanks a lot!

73 de Tom OH6VDA

Sendt fra min iPad Air 2

> 5. jun. 2019 kl. 15:01 skrev Black Michael via wsjt-devel 
> <wsjt-devel@lists.sourceforge.net>:
> 
> For the IC-7300 you want the ALC meter to show no action at all.  So if it 
> ever bumps up at all you've got too much audio going into the rig and need to 
> back off the USB Mod Level.
> 
> You should be able to transmit 100W with no ALC (or very close to 100W).
> 
> That is the goal of all rigs....some of the newer rigs will show < 0dB ALC 
> (e.g. K3) though so it pays to learn what your ALC meter is really telling 
> you.  The way you do that is set your rig for 100W, WSJT-X power slider at 
> -3dB, computer audio out at 0dB, then adjust rig/external sound to show 50W 
> tranmit power going out.  That should be 0dB ALC and shows you what to expect 
> when transmitting close to the 100W.  Many rigs cannot do 100W with no ALC so 
> have to back off to 95W maximum or such.  So as you gradually increase the 
> power slider in WSJT-X (use the up cursor key) watch your ALC as you approach 
> 100W.  If you start seeing ALC you have to back off the audio level at the 
> rig or external sound card so the WSJT-X slider can be at 0dB and no ALC 
> showing.
> 
> de Mike W9MDB
> 
> 
> 
> 
> On Tuesday, June 4, 2019, 12:06:34 PM CDT, Black Michael via wsjt-devel 
> <wsjt-devel@lists.sourceforge.net> wrote:
> 
> 
> If you reduce power from WSJT-X (not from the rig) does your ALC drop?  If 
> so...that's too much audio.
> 
> Mike
> 
> 
> 
> 
> On Tuesday, June 4, 2019, 11:57:44 AM CDT, Gene Marsh <w8...@me.com> wrote:
> 
> 
> Mike,
> 
> My ALC is ~25% @80W.  But, I have no issues with transmit.  Only observing 
> the double decode.  Everything else is good. 
> 
> 73 de W8NET Miles / “Gene”
> Secretary, Portage County Amateur Radio Service (PCARS)
> 3905 Century Club - Master #47
> DV2/W8NET in the Philippines
> Licensed since 1974
> 
>> On Jun 4, 2019, at 12:46 PM, Black Michael <mdblac...@yahoo.com> wrote:
>> 
>> I do believe 63% audio on the IC7300 is wayyyyyy too much audio.  What does 
>> your ALC meter say?
>> 
>> de Mike W9MDB
>> 
>> 
>> 
>> 
>> On Tuesday, June 4, 2019, 11:44:04 AM CDT, Gene Marsh via wsjt-devel 
>> <wsjt-devel@lists.sourceforge.net> wrote:
>> 
>> 
>> Joe,
>> 
>> My setup:
>> 
>> Windows 10 Pro - see the pic:
>> 
>> <image1.jpeg>
>> 
>> 
>> -rc7
>> IC-7300
>> USB audio codec @66% volume
>> 
>> Need more info?
>> 
>> I will try to save a wav file next time I see it. 
>> 
>> 
>> 73 de W8NET Miles / “Gene”
>> Secretary, Portage County Amateur Radio Service (PCARS)
>> 3905 Century Club - Master #47
>> DV2/W8NET in the Philippines
>> Licensed since 1974
>> 
>>> On Jun 4, 2019, at 12:12 PM, Joe Taylor <j...@princeton.edu> wrote:
>>> 
>> 
>>> Hi Gene,
>>> 
>>> I have seen nothing like the duplicate decodes you report.  Please send us 
>>> the .wav file for one or two of your examples, and tell us something about 
>>> your computer setup.
>>> 
>>>    -- 73, Joe, K1JT
>>> 
>>>> On 6/4/2019 11:39, Gene Marsh via wsjt-devel wrote:
>>>> FT4: I have seen 7-8 times, double decoding.  Always a strong signal. 
>>>> Example:
>>>> image1.png
>>>> I saw that in the early days of FT8.
>>>>  Except for that, it’s working really well. (Thank you Joe and your team)
>>>> 73 de W8NET Miles / “Gene”
>>>> Secretary, Portage County Amateur Radio Service (PCARS)
>>>> 3905 Century Club - Master #47
>>>> DV2/W8NET in the Philippines
>>>> Licensed since 1974
>>>> _______________________________________________
>>>> 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
>>> https://lists.sourceforge.net/lists/listinfo/wsjt-devel
>> 
>> _______________________________________________
>> wsjt-devel mailing list
>> wsjt-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/wsjt-devel
>> 
>> <image1.jpeg>
> 
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