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Clear SWR Protection "S" through the USB port?

 

I have QMX+ bundled with a mini PC and I connect via remote desktop to run WSJT-X, etc.
?
I have been using this setup with my QMX successfully for a few months.? It works well with my ATU-10 and Ultimax100 antenna .
?
The QMX+ however, has gone into SWR Protection a few times.? And with the rig in another room, I would like to be able to reset the "S" remotely.
?
Through the terminal connection, perhaps?
?
Is that possible?
?
Any info/advice appreciated .
?
Tanks,
Sam Hanie, AC4OW
 

Sam
Be extremely careful using the auto tuner.? When it is seeking a match SWR can transiently exceed 10:1.? This causes high voltage at the BS170 PA transistors that does substantially exceed the manufacturers rating.? I recently recorded these transients at the PA transistors and posted the results.?
It is absolutely necessary to tune with an ATU a no more than 50% PA voltage or use an attenuator between the ATU and QMX while tuning (I use a QRPoMeter).
?
Notes:? From my testing it is high PA voltage that kills the BS170s and not temperature.?
? ? ? ? ? ? Also the ATU transient spikes are worse at 160m and 80m.
? ? ? ? ? ? A also operate the QMX remotely and am very careful to ensure I don't get ATU spikes.
?
 

On Sun, Oct 13, 2024 at 06:11 AM, Sam Hanie wrote:
with the rig in another room, I would like to be able to reset the "S" remotely.
Great suggestion!? The "S" is a showstopper for remote operation.? Perhaps there will be a way to do it once Hans release his BASIC programmer interface.
?
73, Mike KK7ER
?
 

Can do it remotely using the terminal mode.? I just tried the following steps - may not need all of the steps:
  1. Exit WSJT-X?
  2. Enter terminal mode
  3. Select: Hardware-test/SWR-Sweep ( Should be crazy data since no RF)
  4. Select: Configurate/Protection/SWR (select Disable)
  5. Select: Hardware-test/SWR-Sweep ( Should be good data since there is RF)
  6. Select: Configurate/Protection/SWR (select Enable)
  7. Exit terminal
  8. Enter WSJT-X?
  9. Use PSK reporter to verify transmit.
It would be good to reset the SWR protection on a band change.
 

Many THANKS!

Thanks,

Sam Hanie


623-219-8130


On Sun, Oct 13, 2024 at 12:27?PM Chris KB1NLW via <chrisrey1=[email protected]> wrote:
Can do it remotely using the terminal mode.? I just tried the following steps - may not need all of the steps:
  1. Exit WSJT-X?
  2. Enter terminal mode
  3. Select: Hardware-test/SWR-Sweep ( Should be crazy data since no RF)
  4. Select: Configurate/Protection/SWR (select Disable)
  5. Select: Hardware-test/SWR-Sweep ( Should be good data since there is RF)
  6. Select: Configurate/Protection/SWR (select Enable)
  7. Exit terminal
  8. Enter WSJT-X?
  9. Use PSK reporter to verify transmit.
It would be good to reset the SWR protection on a band change.
 

THANKS!

Thanks,

Sam Hanie


623-219-8130


On Sun, Oct 13, 2024 at 11:05?AM Chris KB1NLW via <chrisrey1=[email protected]> wrote:
Sam
Be extremely careful using the auto tuner.? When it is seeking a match SWR can transiently exceed 10:1.? This causes high voltage at the BS170 PA transistors that does substantially exceed the manufacturers rating.? I recently recorded these transients at the PA transistors and posted the results.?
It is absolutely necessary to tune with an ATU a no more than 50% PA voltage or use an attenuator between the ATU and QMX while tuning (I use a QRPoMeter).
?
Notes:? From my testing it is high PA voltage that kills the BS170s and not temperature.?
? ? ? ? ? ? Also the ATU transient spikes are worse at 160m and 80m.
? ? ? ? ? ? A also operate the QMX remotely and am very careful to ensure I don't get ATU spikes.
?
 

FANTASTIC!
?
It worked as advertised.
?
Many THANKS!
?
Sam,AC4OW
 

Hi Sam

It's good that there's a workaround however, I think it would be tidy for there to be a CAT command which returns the SWR protection (and other kinds of protection, like battery voltage) status and lets you clear it via a command. So I have added this to my list.?

73 Hans G0UPL



On Sun, Oct 13, 2024 at 4:11?PM Sam Hanie via <SAMHANIE=[email protected]> wrote:
I have QMX+ bundled with a mini PC and I connect via remote desktop to run WSJT-X, etc.
?
I have been using this setup with my QMX successfully for a few months.? It works well with my ATU-10 and Ultimax100 antenna .
?
The QMX+ however, has gone into SWR Protection a few times.? And with the rig in another room, I would like to be able to reset the "S" remotely.
?
Through the terminal connection, perhaps?
?
Is that possible?
?
Any info/advice appreciated .
?
Tanks,
Sam Hanie, AC4OW
 

Hans,

It is wonderful to be associated with an OUTSTANDING vendor.

You guys are the BEST!

Thanks,

Sam Hanie, AC4OW



On Mon, Oct 14, 2024 at 1:33?AM Hans Summers via <hans.summers=[email protected]> wrote:
Hi Sam

It's good that there's a workaround however, I think it would be tidy for there to be a CAT command which returns the SWR protection (and other kinds of protection, like battery voltage) status and lets you clear it via a command. So I have added this to my list.?

73 Hans G0UPL



On Sun, Oct 13, 2024 at 4:11?PM Sam Hanie via <SAMHANIE=[email protected]> wrote:
I have QMX+ bundled with a mini PC and I connect via remote desktop to run WSJT-X, etc.
?
I have been using this setup with my QMX successfully for a few months.? It works well with my ATU-10 and Ultimax100 antenna .
?
The QMX+ however, has gone into SWR Protection a few times.? And with the rig in another room, I would like to be able to reset the "S" remotely.
?
Through the terminal connection, perhaps?
?
Is that possible?
?
Any info/advice appreciated .
?
Tanks,
Sam Hanie, AC4OW

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