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Hi Ashhar, I would suggest the LM2575 SMPS chip. I used it many times and it seem quiet on SW bands and it will sustain 2-3 amps easily. The schematics is simple and uses few components, a 330

thanks, charu. onto it. - f wrote:

Also take a look at LM1804 de vu2upx _._,_._,_

I would recommend following the design notes in the chip documentation when selecting an inductor.? Once you have things working well, you can try winding your own. Much of the emphasis today is on

It was suggested to use a lower switching frequency so that the harmonics in the HF are weaker. I will look at some 50 KHz parts. The transients need to b snubbed on the output and the input needs to

Jerry, Terry, All good suggestions. Let me play with these. [email protected]> wrote:

I've built a lot of boards with switchers, but never anything with radio gear on it.? It is done all the time though, successfully.? I'm sure any cell phone has a few. Here's an ap note from TI on

Hello, you need the?CH341SER driver, download and install. Audio cable from speaker to computer, the "mike"cabel, remove the ptt connection and put it in the computer, then usb connection. Settings

Hello, I was gifted a v3 bitx by a ham when I was at my lowest. I want to buy another prebuilt sound card adapter Prewired for my Hf rig. This is only because I really do not have the skills to build

Shaun, The only thing that CAT control and the lack of CW and SSB transmission would be the Nano.? I would suggest that you pull the Nano from the ?BITX and see if that will connect to the PC.? The

I would suggest going to the RPi site here https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/README.md and look at what they are using to generate their on-board supplies.

For the upcoming sbitx project, I am looking for suggestions for a switching regulator. The raspberry pi and the display together can consume up to 2 A of current at 5V (esp when you are running CPU

Here's an old post about the v3 suggesting they do sort uBitx crystals, using crystals that are close in frequency for any one rig: /g/BITX20/message/35328 That old price may seem

Gerard I am thinking any placement should work given they seem to be within plus or minus 200 Hz of the average. But since you made effort to measure them, spread them so the maximum ones are spread

Please, the cost including shipping to Italy. do you accept payment with PayPal? 73 de IW4AJR Loris

Read this: /g/BITX20/message/51728

Hi Gyula, Thanks for the reply.? The device manager does not automatically update any drivers.? I have deleted the port and restarted the laptop.? This still has not resolved the? problem. 73

You're using windows 10, which you updated and corrupted the driver. Unfortunately, you can read about many such cases. Please install the driver again and it should work. 73, Gyula HA3HZ

I must mention that Jack's talk was very illuminating. It made me go back to the STM32F103. It will soon be available online I am told. [email protected]> wrote:

Not used my uBitX V6.1 for a? few weeks.? Today, It won't connect to Log4OM, or WSJT-X.? Device manager says USB No Driver loaded, but doesn't try to find one.? As a stand alone, receive is OK,