Use what ever you like, its an experimental hobby.

As Alan says it shouldn't matter too much. Hans will send you one if it was missing from the package - just email qrplabs. -- 73 Richard G4TGJ

Hi, waiting for my QCX, tracking says (google translate), "Buyer Centers Opens Bag": TURKEY, ISTANBUL İST.ULUSLARARA PIM (AVR) is -BAŞAKŞEH, Buyer Centers Opens Bag 2019-06-03 18:58

Not Preaching, do your own research. L.B. Cebik, W4RNL(SK) anttenna writeups I thought good. Alan

Hi Victor, Guidance is provided on Page 33 of the current U3S Operation manual, Section 3.10 How to use CW

Phil, I'd guess it will not make a great difference, maybe not even noticeable. It would probably make the audio filtering a little less effective, best put one in sometime. 73 Alan G4ZFQ

I'm missing part C53, a 3.3 NF cap. How critical is the combination of C15 and C53 ? The combined value should be 36nf, according to the manual on page 21. Is C15 good enough? 73 Phil N6WKZ

The near field of a dipole antenna is given by an integral equation, whose kernel is a Bessel function of the second kind, and which possesses a singularity at the antenna's surface. So there is room

U3S and SDR are soldNorCal40 is pending funds -- David N8DAH Kit-Projects.com Shop is now open!

Ya Curtis, quite familiar with FCC's beacon rules... Only unattended I plan on running will be on 10/6/2 meters, where it's acceptable. Below 28Mhz, control op needs to be present... And what

Not sure what happened, was just curious on what others ran... lol Oh well, been a ham 23 years now, and after becoming bored last fall, upgraded my license to play on some of the more fun bands.

Bill, off topic here but an easy way to check ur frequency accuracy and stability is using the FreqCal function with WSJT, its at the bottom under the mode selection. It also takes into account ur

One thing I have learned....don't let conventional wisdom stuff your pipe with the wrong tobacco. Some folks are more zealous then others and some handle their opinion like a treasure chest. Hangin

Had a unexpected car repair and need to move a few things out of the shack. I have the following all built by me. Norcal 40A 10T-Pot, Solid 3w out tuned for 7.025-7.070ish at 690Hz with built in Touch

Hi Bill, Not defensive, I'm happy to answer questions posed as best I can. I'm not a font of all knowledge & don't pretend to be. Everyone is entitled to their own point of

Victor Asking hams to suggest then debate antennas is a real hornets nest. My barefoot U3S reaches half way around the world on 30 and 40 meters using a vertical. Likely you may not have an antenna

Jeeze... After a couple of years of struggle, frustration with getting sense about QRPp antenna design from so many self-ordained "experts" has caused me to walk away from ham radio as a bad job.

My U3S is putting about 250 mw into a MyAntenna end fed dipole. I get lots of spots every 10 minutes on 30m. My drift is almost always zero, with an occasional one or two Hz thrown in. -- John,

Hi Alan, It looks like you are a little on the defensive here. My comments are not a slur directed at either you or WSPR. I'm sorry if something I said looks that way to you. I tried WSPR several

I use decent antennas for everything as if its poor and nothing happens where is the problem? So End fed half wave monoband so I know its pattern (like a centerfed dipole). A long while back I