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Hi, The dBV only choice may not be so strange as maybe that is the sensitivity of the input?? On my old SA, I need to use about 60dB of attenuation on the 40m signal from the ubitx before inputing to

Thanks for the thoughtful comments.? Definitely still learning how to use the tools.? I did need to update to the latest software.? Oddly, dBm is not a choice for units, seems weird since this is

*2019.02.10* *Harmonic measurements on as-delivered uBITX* *?* *Harmonics, dB* *?* *Band* *Freq, kHz* *Mode* *2* *3* *4* *5* *6* *7* *8* *9* *Photo* 80/75 3750 CW -59 -48 -59 -44 -56 -53 -44 -50

OK, I followed the Geexer instructions? for the Amunter .ino file.? When I got to the step to choose Verify/Compile, it gives the error message "PinChangeInterrupt.h" file or directory not found." I

Hi, Here is a video contrasting a scope FFT calculated spectrum vs a spectrum analyzer.? https://www.tek.com/product-demo/mdo4000-spectrum-analyzer-versus-oscilloscope-fft Well sort of, the spectrum

I had an issue with my V4 that I got nothing out on 21, 24 and 28mhz. The power mosfets were warm and current draw from the rig was around 3 amps. It turned out to be the d13 line from the nano micro

Skip Davis, NC9O

Earl you may need to adjust the contrast trimmer pot on the Raduino to see the frequency displayed properly. Skip Davis, NC9O

Have two problems no signals and one row of blocks on Raduino display. The signals seem ok up to the inductor coil but none at c13 capacitor could this be a short in the coil? as for the display I

Ron you might be dealing with learning to use the instrument.? note on the upper right there may be a drop down box where you see dB v -- perhaps dB m is an option?? if so, this will relate the

Can? anyone? tell me? if? this is? right? for? a 20x4 screen? ? seems? my new? screen? does? not? work? I? have? the blocks everyone? else? has? but? thr? radio? works? fin?

I should add that I had low power (not all bands put out 7+ watts anyway), you are saying no power so may be something else. You however should start by setting the monitored current draw pot

Hello Have you started by following the tuning recommendations. http://www.hfsignals.com/index.php/ubitx-tuneup/ Note!!!! Pots have to be fully clockwise before turning on Then measure again, I had

i finished building the ubitx with nextion display.theres zero power output in 40m ,20m and above but below 7mhz on all bands i get good output power.measured power with mfj power meter on 30w

You're reading it right.? dBm is in reference to a milliwatt (usually at 50 ohms), when you're reading the difference between peaks, you're reading db - the difference between two power (or voltage)

Thanks, Vic - this looks like just the ticket. I have printed the "Geezer instructions" and will do what I can to follow them!

Punctuation issue (missing period, run-on sentence), repost to clarify. I spent last evening prowling the Arduino forums unrelated to bitx-40.? The black squares appear on Arduino displays NOT

I spent last evening prowling the Arduino forums unrelated to bitx-40.? The black squares appear on Arduino displays NOT connected to radios. as well I may have some wiring issues, and I will spend

Ron, It looks like a correct interpretation to me. Also I will have to check out the Analog Discovery 2. Enjoy the V5. Dan W3BU Sent: Monday, March 25, 2019 6:59 AM To: [email protected] Subject:

Thanks Raj!? I Forgot to put in first post that this is CW key down, still need to wire up a mic.? For some reason the software for the AD2 puck doesn't have dBm, or maybe I need to update it.? I