"However, the action of ALC meter depends on balance between the modulation
level setting of your transceiver and the audio output level of your PC.
Please adjust them with seeing the ALC meter.
As you already know, if the ALC meter indicates within the ALC zone, there
is no problem.
Best Regard
This seems to come up every few months. ALC is not the cause of the problem, it
is a symptom. The cause is overdrive of the mic audio chain and/or balanced
modulator. Poorly designed ALC can cause wide signals on voice but not with
continuous carrier modes like FT, but this is not harmonic dis
> On Jun 13, 2019, at 1:25 PM, Matthew Miller wrote:
>
> I don’t want to leave you hanging since you posed reasonable questions (and
> if someone else is in the same boat) – but I also don’t want to start a large
> time-configuration thread in the dev mailing list – I think I got the answer
Matt,
I put a short cut to http://time.is on my desktop and click on it to get an
instant report on my computer time. I just clicked on it with my iphone and
its clock is right on ! My iphone does better than my PC ha ha 😄
I restarted the nist time sync this morning on my pc and now it is
I don’t want to leave you hanging since you posed reasonable questions (and if
someone else is in the same boat) – but I also don’t want to start a large
time-configuration thread in the dev mailing list – I think I got the answer I
needed with the technical spec of what tolerance is acceptable.
I've never seen the need for an ALC meter in digital modes... Put the power
output on the rig to max, hit the tune button in the app, turn the audio
drive up until you just barely reach your desired power output on the watt
meter, click the tune button again to turn the signal off, and start making
Once upon a time a DSP56002EVM let us experiment with "digi" modes. Soon psk31 sw and a sound card made it possible for many more to operate.Psk31 was not unlike a two tone test for 3rd order distortion. I would carry a portable receiver and laptop with a few audio sw analyzers to help someone setu
Not completely true.
I am using a 7610 with power set to 100% and with ALC to 0 I have 95 W
out. I have done more than 150 countries in 9 months with ALC set to 0
and 95 W. ;)
Bye,
Maurizio
Il 13/06/2019 19:34, Ron WV4P ha scritto:
Amazing how people can believe that all radios handle ALC
Even better than looking at the RF waveform on a scope (like we used to), is to put a receiver on another computer running Wsjtx (or someother sdr dongle and spectrum sw) and monitor your signal during level setup (at least).BCNU DE N2LO~>-Original Message-From: km4...@gmail.comTo: wsjt-dev
Amazing how people can believe that all radios handle ALC the same. Again..
Contrary to people's Opinions, don't be afraid of ALC, Especially if you
have an IC 7300 or 7610, if you manage to get it to zero, have fun not
making contacts. About 50% works very well.. Ron
On Thu, Jun 13, 2019, 12:11 P
I have to agree with Mike on this one. If you are showing any
alc your are over-driving and putting out a crappy signal. I see
it all the time. These poorly setup stations with an extra wide
signal that no one can operate next to because they are causing
distor
Nobody is saying that ALC is the cause of the problem. There's lots of things
feed into the ALC.It's simply an indication that SOMETHING is over driving the
rig when the ALC indicates more then 0dB of attenuation.
I think you'll find if you reduce the USB Mod Level you'll find the ALC can be
For what it's worth, I have a different view of how ALC works.
First of all, I don't think that properly implemented ALC causes more than
a trivial amount of distortion in the signal.
Audio processors in studio sound boards and in commercial radio stations
use it routinely. It has the benefit of
s
>
>
> IMH for all boxed transceiver but not the K3
Power control all the way UP to maximum, it will NOT control the Pout.
Audio level set as ti have not any ALC instrument deflection.
Use the Audio Level control, chose one control with enough granularity and
easy grip, will control the Pout as to h
I have used the following method regardless of radio used...
Use an external power meter (after the transmitter).
Adjust audio gain/drive until the point where power meter stops rising. At
this point, the radios ALC meter will start to show some deflection. Back
the audio back slightly. The power
FT8 should deal with 2.5 s time´difference so +/- 1 s is suitable tolerance.
FT4 at the moment tolerates 1 s difference so less than half a second say 400
ms is a suitable target.
73, Reino oh3ma
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What time software are you using?
What does http://time.is tell you?
hamspots.net looks like your time is good. Vast majority of DT's are < 0.5
seconds which is what I recommend for what you should see on hamspots.netIf
majority are > 0.5 then your time is off.de Mike W9MDB
On Thursda
IS there any documentation what an acceptable error is for FT4, FT8, etc?
As I was checking things over troubleshooting why things seem less reliable
tonight I notice that my laptop instead of being within 100mS or so I see
`ntpstat` is reporting synchronized within 1.4 seconds syncing to
time.
Only when the manual is correct. Most are wholly inadequate in this respect.
Mainly due to not addressing digital modes at all. Even Kenwood's own TS-890S
multi-lingual manual doesn't mention this.
I just worked with a user yesterday with in IC-7000 and RigBlaster Advantage in
the ACC socket
Matthew,
It is an interesting question. We are going to stick with the *.080
frequency recommendations. We have suggested that the CW boys and girls
try using their notch filters and "yes" technology marches on and they will
loose a little tiny piece of spectrum.
John
On Wed, Jun 12, 2019 at
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