Hans may have to start a subsidiary company named QROLabs if everyone is interested in QRO'ing his designs. _._

Hans Nilgun is a very smart lady! Arv _._

Karl If you have not already went through the alignment procedure it might be worthwhile to do so. https://www.youtube.com/watch?v=0GElK3qaxog http://qrp-labs.com/qcx/qcxtrouble.html Arv _._

If your transceiver does not have a way to reduce power so you can use a resistive SWR bridge, then you may be able to use a bridge that can be left in-line at all times. https://groups.io/g/antennas/

"To keep costs low, the Raspberry Pi does not include a Real Time Clock module. Instead, users are expected to have it always connected to WiFi or Ethernet and keep time by checking the network." Ther

Interesting. If you are using a paddle key with things that include an Si5351a, it might be possible with a small code change to use the paddle in place of a rotary encoder. Arv _-_

#u3s

Leland If using an Si5351a with older gear it should work to set one output as the BFO with slow tuning. Then use a different output as the LO with both slow or fast tuning. Arv _-_

#vfo

JMH A few months ago I was working on an operating system for the avr328 using an Arduino Nano. That project stalled, mostly due to my age and lack of motivation, but some of the techniques I came acr

Yes. Today's through-hole devices are just SMD with wire leads attached. _._

Solder wires onto each end of an SMT part and it becomes a thru-hole device. _._

Stefan Hmmm...I doubt that Hans has time to make modified code for the U3S, but there is nothing keeping others from writing their own code to run on his hardware. How about adding a hardware interfac

Mont Thanks. Arv _._

Mont, and others When things go badly...REBOOT sounds like earlier versions of Microsoft Windows. There are UNIX and Linux systems out there that have not been rebooted for years. What this does bring

Pat If your Chinese item is large it may go by boat and be stacked up in the backlog at Los Angeles. If the item is small it may come by air and take 5 to 10 days. I ordered 3 separate items a month a

Mont KM6WT We have to be careful to not give away too much info when talking about why you cannot simply copy Hans code from a legitimate QRPLabs chip to a generic avr328. Otherwise we could hindering

#display

Arun I think Julian and a few others know about this...but the software in a QCX is not open source, and contains built-in IP (Intellectual Property) security. This is why you get the "Use Original So

#display

Timothy Thanks for the informative reply. Very interesting. My question was a bit serious and a bit tongue-n-cheek for those who automatically assume that if they buy from a US reseller the parts will

Mouser, Digikey, and Paloma are resellers, not manufacturers. Do we know who they get their toroid cores from? Diz uses his own products in the power amplifier that he sells, so they should be adequat

Have you turned-over the RX<--TX and TX-->RX leads? _._

#qlg

Peter If a whisper-net receiver is reporting similar drift on several different signals, might we assume that this is whispernet receiver drift instead of drift in our own transmitter? Arv _._