To All,
It's great to see all of the posts reviewing how to set audio correctly.
I was wondering if there's a published spec on the FT8 signal definition; I
think I may be seeing spurs and want to make sure that isn't actually part
of the fundamental.
73's,
John
AJ6BC
On Wed, Aug 1, 2018, 11:42 AM Black Michael via wsjt-devel <
wsjt-devel@lists.sourceforge.net> wrote:
> Good instructions for the analog world.
>
> There's one more way that works on most any computer these days....
> Even people with direct USB connections to their rigs are having problems.
>
> I would add this...and it should work on most any rig setup....
>
> #1 Set WSJT-X to minimum power
> #2 Set audio devices (record/playback) to 0dB
> #3 Rig to 50% of rated power for CW (some rigs can do full power on CW,
> some can't)
> #4 Rig gain to zero (MIC gain if you're input is the MIC, or USB gain if
> USB, or Data gain if one of the DIN connectors)
> #5 Click Tune on WSJT-X
> #6 Bring up WSJT-X power SLOWLY to max...you should still see no power or
> very low output on your rig (assuming rig gain is at zero).
> #6 Bring rig gain up SLOWLY until you get 5W or so of power. If you don't
> see power coming up then you have the wrong gain control. Then look at
> your ALC meter. Whatever your ALC meter shows at this stage is where it
> should stay as you bring up the rig gain. Some rigs show 1 bar of ALC (e.g.
> IC-7100), some show 30-50% (eg IC-7300/7410), some show no ALC at all.
> #7 Bring rig gain up and eventually you will see the ALC start
> rising....back it down to the level you had at 5W. What ever transmit
> power % you have at that point is all you will be able to transmit without
> ALC kicking in. It will probably be 80-90% of your rated CW power.
> #8 Bring up rig power to full CW power level and the ALC should stay
> constant. You can now adjust your transmit power either from WSJT-X or the
> rig.
>
> de Mike W9MDB
>
>
>
> On Wednesday, August 1, 2018, 12:51:38 PM CDT, Jim Brown <
> k...@audiosystemsgroup.com> wrote:
>
>
> On 8/1/2018 9:50 AM, Black Michael via wsjt-devel wrote:
> > IMHO better if ops learn how to set up their rigs properly though.
>
> Exactly right. The last page of this link has detailed instructions for
> setting audio levels that avoids distortion.
>
> http://k9yc.com/USB_Interfaces.pdf
>
> 73, Jim K9YC
>
>
>
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