开云体育

Very similar to what I got with my QDX-M for 160m, as far as shape and bandwidth. -Nate N8BTR

Hans Summers via groups.io <hans.summers@...> wrote: Thanks Hans. Further investigation: 1. I2C is idle, so it's not the firmware 2. Clock looks weird... This is the input of the

Hi Lucien It would help if you could list the complete settings of the U3S. You didn't list all. You should list also the TX settings, and the "Call" setting. Note that for WSPR transmissions, the

Maybe a missing / broken / not connected C around the PCM1804? There are 10 capacitors. 73 Ludwig

I forgot to mention that it only briefly worked when I updated the firmware.? At some point the problem returned and has remained ever since. Bill W2EB

John, Is it also acting like my original post:? SMPS units seem to react in real-time, knobs and buttons slow but much faster than band change or "T"ransmit?? If so, we may have the exact same

Hi Lucien Sounds to me like the "time of day" on the U3S is not being set / or/ not set accurat >>plus/minus two seconds<< ?WWV / ZULU 72 73 John N3AAZ

Found the problem! I was ready to send the thing to Jeff, W1NC to get his genius to work its magic to FIX this nightmare. He said he always does a close inspection with magnification before he sets

Hi Scott, as others have said, you can test the boards without the processor controlling them. I would find out which diode is missing and then replace it. I have three QMX, and two of them have

Are you trying to send wspr or qrss? Looks like qrss. Andy -- The universe is made up of Protons, Neutrons, Electrons but contains only one M0RON.

Nobody, including me can decode my WSPR signals on LF/MF and HF when I tx using 1) A U3S beacon and 2) A home made circuit based on an Arduino. Both transmitters used to get decoded OK. I have tested

Dummy load is the simplest answer I've found. -- 72 de N4REE, Bob Easton - QRP CW forever

I can hear the approx 1khz tone on all bands of my QMX+ v1. Loudest on 12M and 6M, but to varying degree on all others. Barely perceptible on 160M, but there. It is not a 100% constant tone, there are

make that an 1804 ?

Hello Chuck Did you try changing the other parameters other than AGC threshold? I will look into it again when I have a chance; it has been a while since the AGC functionality was added and I get

Hi Dan,thanks for the suggestion, I will indeed try that next. Hans diagnostic tools are great help with this sort of problem. While waiting for firmware to fix 160m problem is the bandpass filter

There is a lot of useful information on this in the Wiki - see Left Menu. I was able to test mine after my first QMX expired. Rod

I confirm that nothing should be writing to the '5351 during receive. Even during transmit, nothing should be causing interruptions at 100Hz. Makes no sense... I would suspect the '5351 chip... 73

Adam, I think Jerry is on to something here. If I recall, Hans runs the I2C programming at 1 MHZ so your 200 is gap sounds like 200 bits are being written at an unwanted time and the 5351 stops clock

Don, I re-read your previous post and realized that you were working a problem where you did not have Vdd.? In that case I understand why the USB interface might not work.? Apologies for the