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The new owner of Kits and Parts posted the following message and I thought the QRPLabs might be interested. From Michael Maiorana: "Hello all. I wanted to drop a note with some updates about

DON'T DO THAT! Put it into your junk box, instead! If you ever build another, there are lots of salvageable parts that are useful. Paul -- AI7JR

Harris, if you look at the main board pcb wiring on page 12 of the Assembly manual, it will be even more interesting. Compare the wiring of the pcb with the drawing of Schematic 4:Receiver. Surprise.

Harris, Hole 4 is larger than hole 5 so there is more space to put both wires through it so most people use that for the end of the 28t winding and jumper to hole 5, however some people run the last

Hi folks! Thank you for your responses! I'm sorry, but I still don't feel sure about which turn/wire goes where. Be aware, I am somewhat of an electronics noob, as this is only my second practical

If WSJT-X is used to RX FST4W it can show the spectral width of received signals. To get it to do this an empty file just named "plotspec" is placed in the working directory. In Windows usually the

I found https://www.youtube.com/watch?v=yFFFAMRQHP4&t=5275s to be a good discussion, for those interested, on using FST4W on QDX, focusing a lot on how important clock stability is as you go up in

Rob, The manual (WSJT-X download page) gives all. Just type the MHz into the drop-down box or Settings - Frequencies- right click - Insert. 73 Alan G4ZFQ

With my manual tuners, if I peak the receive noise, it's already close enough as long as the antenna's impedance is well within the range. If the noise peaking is tricky or unclear, that usually means

Hi Don Your spots show a Maidenhead 6 character locator and the balloon transmitter transmits a Maidenhead 4 character locator so the U4B tracking firmware disregards the M6 spots . This is caused by

I decided to look into this FST4W mode a little more. Probably not the place to bring it up, but since I saw the discussion here ... The documentation (

Maybe next time Martin ! Haven't tried discord but not easy from the shack. 73 Chris G4CWS

hi Evan, thank you very much, I looked for a short as you described and I didn't find it, only between Vdd and Gnd of the 3.3v card both with the card inserted and without the card it gives me a

hi Evan, thank you very much, I looked for a short as you described and I didn't find it, only between Vdd and Gnd of the 3.3v card both with the card inserted and without the card it gives me a

I probably have the same problem with the QMX: /g/QRPLabs/topic/101560193#110972 73 - J?rg, DG0JDE

Hans, Thank you for your attention to my query. cheers, Graham ve3gtc wrote:

Nick, OK, when I get unexpected measurements then, like Hans, I first question my measuring techniques. If the frequency really is double then it looks like the 5351 has a weird fault. 73 Alan

Don, I have found that when you are testing with no movement it often gets erroneous spots. Is your location accurate? Not sure of the exact reasons but seems to be consistently in error till it gets

Indeed No, 200 MHz 1 Gs/s As per the Tx_clocks.png - but I pulled the BS170s so can't actually measure after the LPFs at present. I checked the frequency of the clocks with a counter - it agrees

Nich, Clock 2 is not relevant on TX. I note the scope, Hantek. USB? What is the output frequency at the antenna? Best check with a counter or RX. 73 Alan G4ZFQ