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All, Has anybody played with this: https://www.pjrc.com/diy-dsp-audio-filter-for-radio-hams/ It's an audio filter with approximately 1 zillion features. I'd like to use it in my uBITXv6. Might strip

On a buck mode switcher, you are more concerned about noise on the input, not the output. A 2A 5v switcher operating from 12v would be drawing about 5A from the 12v supply sometimes, 0A most of the

Arv, That is the best solution if you can : 1. Dissipate 2 A x (12-5)V = 14 watts continuously in a massive heatsink. 2. Be alright with a 20 watt power drain. A straightforward LM338 takes care of

Farhan A conventional (inexpensive) linear or switching regulator can be used to drive a higher powered BJT or MOSFET pass transistor. This also provides a place (the base of that pass transistor) to

Shaun G3ZSU I was running my v3 on 160 m without a good matching antenna or harmonic filter and got the output transistors well too hot to touch, could smell them, had big heat sinks on.? I was very

Why not use the low current LM2575 to control a higher current pass transistor, perhaps a 3055, like we did in the 'old days' to build a power supply?

Farhan I know you specifically mentioned "switching" type supplies, but my recommendation would be to use a linear regulator if possible. Maybe something like a 7810 followed by a 7805, if that is

Possibly no CAT because there is no USB driver. A number of Microsoft 10.x users have indicated that the recent upgrades to 10.x have blocked the USB driver that is used for CAT purposes. Before

Shaun, Before replacing the IRF510s, do a voltage check on Q90.? That one is the most common culprit when both CW and SSB power output drops to less than a watt.? The values for the v4 power

Thank you to everyone.? There were 3 problems. First, Gyula, you were correct, I had upgraded Win10, and lost the Arduino drivers. Second, Thanks Evan, a re-flash of the Arduino got most things

*** Indeed. I have a need for a 12V buck regulator in my "big linear" project. Had no idea it was so easy now. Just the switching regulator chip, an inductor, a fast diode and a couple capacitors.

I don't think they do it automatically; you'd have to do it in the code, perhaps running the DSP in a separate thread or even as a separate program if that seems simpler. The library used by C code is

"Bugware 10" (the Pro version) also updated its supply of garbage on my Lenovo W540.? This is a machine with 32 gig of RAM and a 1 terabyte SSD?? It took almost 4 hours to get the machine back into

In a werk, they said. I will be breaking it down and posting it on vu2ese.com

Great information, guys! Thank you for all this wisdom.

Whoops I didn't open Rene's attachment til just now and he's got things pretty well covered there.? ?Nice.

I've struggled with this exact problem and my advice would be to *thoroughly* investigate the COM port settings and leave the uBITX as is.? ?Even now, when I have to restart the computer I sometimes

Ashhar, is your talk available online? 73 Dave ADOB ( https://www.qrz.com/db/AD0B ) Raduino bracket and Ham_Made_Keys ( http://veloliner.com/ham/k0mbtkey.pdf )

As you can see in this (bad) photo: we have some scaffolding code that monitors the temperature and load of the Teensy 4.1. This is pretty old code (you can see it's V072 and we're currently working

It was a great day.? I was only able to catch the beginning of Jack's talk but I will catch the rest when it gets uploaded in few weeks.? In typical Jack style it was more an interesting