I haven't found a rig yet (other than Elecraft) that need any ALC. I think
there may be one other I've run into but don't recall right now where the meter
does show 0dB up the scale a bit.
Like I said...run the rig at 100W and adjust WSJT-X down the scale...at some
point down the scale ALC will be at zero.
Every -3db should give you 50% power reduction. Works on every rig that is set
correctly.
Mike
On Wednesday, June 5, 2019, 2:39:20 PM CDT, Ron WV4P <wv4...@gmail.com>
wrote:
Contrary to common belief.. You better feed that 7300 some ALC if you want it
to perform. All radios are NOT the same and some need ALC. Ron, WV4P
On Wed, Jun 5, 2019, 2:34 PM Tom Ramberg via wsjt-devel
<wsjt-devel@lists.sourceforge.net> wrote:
Sorry for posting this in the wrong thread. Now Trying to delete it and repost-
OH6VDA Tom
Sendt fra min iPad Air 2
5. jun. 2019 kl. 22:26 skrev Tom Ramberg <oh6...@yahoo.com>:
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 #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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