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Hi Andy I don't think that is the cause; the chipped ferrite is very common and doesn't normally cause functional issues. 73 Hans

A new chat has been created: Is it possible while my order is not shipped (assembled QMX+): to order dummy load and no to pay for delivering it with QMX+ together? *By:* Algis Unknown

I believe I found it.? L501 is missing a corner and coils are exposed.? I was so focused on solder joints I didn't see it until I got an oscilloscope involved and I was tracing the pwm signal. I

Bottom line right of digi sign is swr, since it is? coars and your 1.2 swr is low enough probably it does not show enough to fill the part of square. You can attach a 80-90ohm resistor on output and

What about your "Update interval" and "TX->RX hang time" settings, what are those? 73 Hans G0UPL http://qrp-labs.com https://www.buymeacoffee.com/g0upl [email protected]> wrote:

Hi Glenn Yes, I will do it! 73 Hans G0UPL http://qrp-labs.com https://www.buymeacoffee.com/g0upl

Dave, All I can say is that it is an old problem I did not solve. I ended up by using a GPS/OCXO/PLL/multiplier reference. I have not tried actually checking the basic Progrock in use, maybe the

Hi Volkert, For Win7 you need to install the serial port driver from here: https://www.st.com/en/development-tools/stsw-stm32102.html As you saw on your Win10 machine that the QMX was recognised and

Hello Randy Yes this is quite easy to do and I have it on my list already. 73 Hans G0UPL http://qrp-labs.com https://www.buymeacoffee.com/g0upl

Für Win7 muss noch ein Treiber installiert werden (siehe Wiki). Wenn das wegen der Sprache mühsam wird, schreibe bitte.

Hallo Volkert, wenn der PC COM-Port und QMX Audio erkennt l?uft bereits die Firmware. In dem Fall zeigt der QMX kein USB-Laufwerk. 73 Ludwig

cq Nun habe ich den QMX schon einige Tage. Bisher ist es mir nicht gelungen, die Firmware zu laden. Im Detail: Der QMX soll auf einem Mini-PC ZOTAC für Portable Eins?tze installiert

I came across the same problems with USB/LSB and SWR jumping. But In my case SWR protection works. Which causes problems from time to time.

And as you can obviously see, I added a couple small heat sinks using a thin coat of contact cement to hopefully add a bit more metal mass. Just make sure they do not touch. Tim - K5DEZ

After assembling a QDX rig for a local ham I received a couple of the QDX PA mod PC boards made by WB2CBA which have the FDT86256 mosfets. They have a max voltage of 150V compared to the 60V of the

True, you are correct.? Sorry, I didn't mean to completely discount that.? I thought you had missed the statement before that, just under the photo, it states "Now check for DC continuity with a DVM

Looks much better now.? If you want to experiment with taking off another turn on L401a or L510, it won't hurt anything. And leaving it set to share 15/17 rather than 20/17 will also work fine - the

Hi Stan, On p25 in section 2.8 of the rev 3 assembly manual, it clearly states “Check that there is NO DC continuity from the points marked A, and ground.” ?This would be after T501 is

I am using a GPS QLG2 to supply 1 second pulses to a progrock, the progrock is generating 27Mhz for a AD4351 DDS and 24Mhz for a receive function. On both the signals generated there is a "blip" when

Thanks Stan, this is great. The explanation makes perfect sense to me. I ended up removing three (!) turns from the 15m portion of 401a. I think I could possibly benefit from removing one more. Or