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Try reducing your 1000uF down to 10uF. Of course, the capacitor comes after the choke from your power source (L-C). wrote:

Here's some info on loss tangent from David W. Knight, G3YNH, site https://g3ynh.info/zdocs/comps/part_6.html He mentions the microwave heating test is invalid because the properties of a material at

David: ...decoders for cw are an insult to the cw community... I disagree. I was licensed in 1954, so had to learn CW and, while that's not the case today, I think it's a shame that all hams don't

Hi Guys, I picked up some of the buck regulators from Amazon that Ashhar originally recommended.? After reading this thread, with regard to switching noise concerns, I built an input LC low pass

Justin ,i went to their website and it looks like a keyer. its something i wouldnt install in my ubitx v6 but to each their own.probably has a decoder for those who like to send way faster than they

Right... that was my fear. Thanks, Rafael

Cool to know about such history Jerry, Thanks!

Hello, In theory, it is advisable to weld the arduino on the side opposite the components. This to avoid capturing too much interference on components. I’ve read about how much....... So that may

I guess I'm late to the party and have no idea what the Funtronics board is for.? I have been running digital on my V6 since last fall with no hardware mods just the 'CEC firmware and using the

A quick lesson on ancient history. The Bitx40 originally had an analog VFO, as did the first Bitx20 of two decades ago. The VFO tended to wander quite a bit, especially after things got warm from

David, Shielding is not the issue. Losses are. Lower Q leads to higher losses. The Q is determined by the material inside the toroid. Air/Vacuum is the best material with least losses for an inductor,

Materials with a lower "loss tangent" should work better. https://www.rfcafe.com/references/electrical/dielectric-constants-strengths.htm (

Ok..... somehow the part about the plastic being hollow on the inside? was not conveyed in the description.?? If PLA and ABS are not suitable materials to print the plastic toroids,? What type

Toriodal inductors are inherently shielded by their geometry, no matter what the core material is, air, ferrite or other. 73, David N1HAC

Hi everybody, One question: is there any reason why the uBitx uses "inverted" pinout of arduino nano? btw, my sBitx arrived! yay! soon starting to play with it! Cheers, Rafael

The current consumption in rx is now less than 0.5A, thats the same league as the venerable FT817ND (let me go and touch mine). I guess if we have a way to switch off the display, it can even come

I was eyeballing an upgrade myself just for the increased energy efficiency, but I will be happy to get the kit with a buck converter selected for compatibility - Finding one that doesn't produce

Hi John, 1 - Many modders have used the Basic and Enhanced series in past builds.? I am not familiar with the other models available now that were not back when I was playing with them.? The best

So I can see that I like the? Nextion display. I have many questions that I am sure have been addressed before. 1. Which? Nextion display should I purchase? There are so many options and features.

0. In sdr.h add a #define MY_MODE, bump up MAX_MODE by 1. 1. In sbitx_gtk.c, locate main_controls[], add the mode name to the r1:mode control as a short string. 2. mode_id(char *mode_str), add an