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 #47DV2/W8NET in the PhilippinesLicensed 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>
-rc7IC-7300USB 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 #47DV2/W8NET in the PhilippinesLicensed 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
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