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https://www.amazon.com/dp/B0CLMD9B4T/ref=cm_sw_r_as_gl_apa_gl_i_4BRYEMHXRJ7KMRBT6XBY?linkCode=ml1&tag=k6ark-20 not available! John N6TRC

How are you changing antenna bands?? What SWR does each band see?? Do you have an ATU up there ? If the same issue is seen feeding a dummy load then my money is on 1 BS170 failed (probably short,

In October QST the award is listed in the July board meeting write up. Congrats to Hans for winning the ‘24 Technical Inovator award Jim w0nkn

Maybe a local FM station.?? When I run the FFT function on my scope, I pick up a signal of a station about 20 miles away.? For me it is very weak so I don't see it with more normal scope usage.

Hi Pierre https://forums.qrz.com/index.php?threads/cessb-breakthrough-for-qrp-labs-qmx.931585/#post-6977397 According to: https://arrl-greatlakes.org/glnews/2024/08-radio_waves.pdf Radio Waves, The

Hello everyone, This is a more generic request for help that impacts everything I am doing in my shack with my older Tektronix 200 Mhz analog o-scope. Specifically, I have been seeing a "noise" in

Most likely one of the four BS170 PA transistors has failed.? Usual cause is high SWR causing voltage breakdown.? The high SWR can be from an Auto Tuner seeking a match or an open feedline. Take

https://forums.qrz.com/index.php?threads/cessb-breakthrough-for-qrp-labs-qmx.931585/#post-6977397 Note the last sentence by N3HFS: " I and others had nominated Hans for the ARRL Technology Innovation

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Hello list :) last year I finished my QDX, and I still run it nearly every day :) Yesterday I noticed the output is reduced by ~50%. In the beginning it was ~5W on 20m, and ~4W on 10m. Now its ~2W

Got it! C401...just got up... -- 73 Karl KI4ZUQ

C509, Electronics parts available right here on groups.io was created just for occaisions like this! Let me wake up and check my stuff as I may have a couple. What part is it for the QMX. Meaning,

Hello Nicolas, I have printed it and use it since a few week. I love the design very well. I stuck transparent adhesiv pads on the backside so that it wasn't so slippery. There is still a border

Hi, I bought a QMX kit and I'm missing one 30pF (C401) 2.54mm capacitor - maybe someone has one for sale? Krzysztof

This is my first post. I am a noobie here. I live near the OP and am watching his QMX+ build as I am considering getting one for myself. With respect to K3TCT’s observation, I was wondering if

I completed a QMX+ last week and the output powers are very similar to yours as you can see below. Measured power is from an external power meter and reported power is from the diagnostic menu on the

Hello Dick Then I suppose Icom and others must not be properly switched OFF even when they seem they are. It's just sleeping but the USB port still active. QMX on the other hand is properly switched

Hi Ian Thanks :-) Nice project, congratulations!

Hi Hans That's great to hear, thank you! — Rich Atkinson 73 Rich VK2LTC

Hi All I’m following with interest the discussions on EER. I’ve just posted on QRPTech my project that uses this technique for SSB. It works but not very well. I’m hoping the wonderful people