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Adjustable Power Level


 

Hi Hans, thank you so much for the amazing little QMX, I'm loving it, and the fact that the SSB firmware allows me to run Vara/Winlink is amazing.
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I don't know if there is a feature request/wishlist somewhere, but it would be really amazing if there was some way to adjust (limit) the output power that could be adjusted from the front panel controls.
I am primarily looking at it from the perspective of setting the CW or USB max output to a series of steps such as 250mW, 500mW, 1W, 2.5W, 5W.
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This would be especially useful if you were using the QMX to drive an RF PA for example, but didn't want or need it to put out it's full maximum output. I know the power level can be set when putting the QMX into tuning mode, being able to do this in operational mode would be really useful (to me at least).
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If there's a technical reason not to do this, fair enough, but if it is technically possible, is this something which could be considered?
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73,
Stefan MI0PYN


 

If you like. Here¡¯s an idea to build an attenuator. These can be built right inside a connector. it won¡¯t be variable as you suggested though.?

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73s,
AA6ST
Sameer


 

Nice article, but I see two problems...?
1) It will also attenuate received signal
2) If built into connector it vill be hot


 

On Sun, Apr 20, 2025 at 07:17 AM, SM5EIE /Gunnar wrote:
Nice article, but I see two problems...?
1) It will also attenuate received signal
2) If built into connector it vill be hot
Yeah, precisely because an attenuator attenuates in both directions makes it unsuitable for this use case.