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We had eleven folks at the 26 December Michigan QRP Club weekly Zoom chat. Please join us Thursday January 2nd (and every Thursday) at 4PM Eastern for the Michigan QRP Club weekly QRP Chat where the

Stan, Guess I won the dummy award of the year on the 1st day. The QMX+ was in Digital mode. Set it to CW and all is well! Tnx, Tom KT4XN ________________________________ Sent: Wednesday, January

Joel, thank you very much for your wishes. I don't understand the thing with the cathodes. To the anode is ok but to the cathode the same time? All the five points are related to the LPF section. If

Many thanks Stan, I will have a carefull check. 73 hanz

First checks: 1) do you have the QMX+ in CW mode?? It will not react to the key in Digi mode 2) does a 'P' or an 'S' appear on the display after the frequency?? If so, you are in Practice mode or

Received a new factory assembled QMX+. Testing with a 9 volt battery. This is a 12 volt QMX+. The receive is excellent. However, there is no transmit on any band. Tested into a dummy load with a

I would also like to be included in a group buy if it happens for 1 unit.? Thanks for your work on this gentlemen! Martin, K0MJ

Nico, the final price per unit would be determined by the number of participants, and the related quantity discounts we can get. But for a ballpark estimate, for the first buy with 35 circuit card

All these pins should be supplied with 2.5V from the R401/R402 potential divider through T401.? There could be several open circuits around T401.

The power pins of the QMX+ USB connector are not connected to anything in the QMX+ design, so they should not be pulling any power at all from your Mac mini, so you may have a short somewhere in your

Shirley Dulcey KE1L <mark@...> wrote: Does it really matter in this particular case, when both enable pins are always enabled (tied to ground)? After asking on a ham Discord I found

Nuts, yes! Welcome to my life. Yeah like my QCX-mini test fixture: https://youtu.be/xb_ZmPx7Py4?si=DVGts9JtbolOTpCU It took me 3 R&D-Weeks to build that. I shudder to think how many actual elapsed

Sorry to do it this way... -- 73 Karl KI4ZUQ

The QMX boards could be tested with some sort of bed of nails test fixture that provided the appropriate test signals for IC403 couldn't they? Use the CLK2 signal attenuated by R513 with a suitable

Those connections, (pin 9 ic 402 and pin 7/9 ic 403) are for the trifilar toroid. Supplied voltage is from the VCC. I get 5v at R401 with 2.6v drop across the resistor and approx 2.3 v (the

I understood that; you are handling it before it hits customers for everything except the QMX, however even you having to deal with a 15% failure rate on a component is nuts (for you to have to deal

Hi Karl I'll investigate now and contact you off-list about this. 73 Hans G0UPL http://qrp-labs.com https://buymeacoffee.com/g0upl [email protected]> wrote:

dr operators, Just finished the qmx plus. Build for9 volts and try with 8 v initially. When i connect the usb for fw i get the notice from my mac mini m2 that the usb port uses too much power and

Just had some civilian drop off a large box destined to Brian Churchwell 350 N Main St Ste 7 Unit 856 Wharton, NJ 07885 United States/AMERIKA Tel 8584127789 Mailed 04 June 2024? Customs

meant to say pin#5 on IC408 wrote: