Evan, Thanks for your answers I have the good software because i have already loaded the hex file from folder µbitxV234 and file µbix_CEC_V1.200_NX.hex. (From download of Hamskey site) Tonight I watch

Hello, I would like to clarify the different versions µBitx. I think this will help other people. It would be nice to have a table with download links. You get lost with links that link from one versi

hello Evan, Thanks for your advice. I had some idea that the code was good, otherwise no µBitx could work. To night the spread seemed better (?). I caught Russians, Italians, etc The sound was much lo

On Tue, Sep 15, 2020 at 08:26 PM, Evan Hand wrote: The code should work with the SI5351 module and the 25MHz crystal setting. Try adjusting the BFO to the 11996795 value and see if that helps. Also, I

Hello, i have made all the tests possibles on the hardware 1) Tested with frequency generator the first stage of amplificator (3 transistors) >>Ok 2) tested the second stage of amplificator (also 3 tr

hello, i think you know some software helpfull like RFSim99, Dishal, Tore calculator. try LTSpice 17, you can simulate electronic circuits. See examples on the soft cdt

hello, I re-checked the pcb. The cabling is correct. For me, there is only one solution: Replace the 2n3904. they may be of poor quality. I don’t have a bfr at my fingertips, but I’m going to do a tes

hello, I did some tests again today. The change on the inductances coming out of the 45 mhz filter did nothing more. I think it’s at its limits and it lacks sensitivity I compared the shematic (see pd

Evan, jack At first I improved my provisional antenna, it is very slightly better. I think I’m on to something, and that would be more in the design. The 45MHZ filter is a little different on the M0th

Hello, It's version V4 + nextion All is ok for the soft i think. i can go in all the options of the menu + calibration + BFO The Nextion work The main menu works with the frequency display, etc I hear

Jack, Remenber. It's an home made. Pcb, tricoils, the case and others. All is made with my hands!!! It's a big project, but beautifull to do. I bought components with Amazon in china, great britain wi

Evan, Jack I took over the calibration and adjustment of the BFO with a generator and an oscilloscope. I checked the entire amplification chain and did 0 beats more to the oscilloscope than to the ear

Evan, Jack, Evan, jack, May you confirm one thing. Are these two values fixed and never changed?? I don't understood: i fixed these values with the manager, after close normally the connexion. i reboo

hello, Thank's for the answers The view plays tricks on me, I saw a zero more. thanks for the explanations. I’ll do tests this afternoon cd

By the way, silly question about the Arduino software. When uploading, does it only take into account the selected tab or does it do it for everything? If it only takes the selected tab, then I will m

Jack, My µBbitx is homemade, it has never been initialized in the factory. So, you may have to force the values with the manager or execute the following procedure (This is in the code of the µbitx V4

Jack, yes, Yes, there is no typo. I would like to understand how it works, and especially if these values are fixed or slightly adapted, but they must remain in the same order of magnitude. 15mhz and

Hello, I’m a little confused with the VFO’s A and B. In the code of the µbitx 4 it is noted VFOA= 71500000 and VFOB= 14150000 (see capture 2) On the synoptic diagram these values are not found. see Sy

Nextion BUZZING hello I tested with an FT114 inductance, the noise dininue a little, it is necessary to add a capacitor of at least 2200µf to attenuate on the 5V off the Nextion. I had a coil that I r

Evan, yes, I looked, but it’s more about reducing consumption. On my µBitx, I can pull at least 5 amps. A friend gave me, a torus F114. I measured, 0.7 ohm and 2.32mHenry. I will test tomorrow if it r