Re: sBitx v3 is available. Board $180, Full system $399
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The SMPS units?I¡¯m finding at 10A all say that you need to limit current to 8A continuous. ? Does the intermittent current draw from the radio work with these power supplies?
-r
Sent from for iOS
On Wed, Dec 20, 2023 at 17:22, Ashhar Farhan via groups.io < farhanbox@...> wrote: Jeff, That is not an easy question to answer. I discovered this much to my dismay. Firstly, the fuses don't go off instantly. They take time to heat up enough to melt and break the circuit. This is a thermal process that can get triggered at a wide range of currents. For us, this is pretty much useless. Instead, what we need is a current limited power supply. Almost all SMPS supplies that cost about ten dollars are cureent limited. I have personally been using a 10A, 12v power supply from Meanwell. It is compact, fanless and comes in ventilated steel case. - f
What size fuse should I use on the 12 V supply for the new V3 board? On Dec 14, 2023, at 8:15?AM, Ashhar Farhan <farhanbox@...> wrote:
? People, It took us a long time to get the v3 radio ready, but it involved an overhaul of our own processes that had become scattered due to the Raspberry Pi and display shortages. We finally have secured all the components and we are able to now offer the v3 board and the full kit at really low price points, which was our intention anyway., The sBitx v3 board is a full 25 watts radio, with robust IRF510s in the final. This board (minus the Raspberry Pi) is now available, ex-stock for $180. You can directly buy a Raspberry Pi Zero 2 W and have a full SDR running for less than $200. The fully assembled kit with Raspberry Pi 4, 2GB and the Raspberry Pi's own 7inch capacitive touch display all mounted in the Aluminium box is available for USD 399. There is nothing in the software that precludes you from running the v3 software on the earlier hardware (DE as well as v2).
Here are some links: 1. The software manual (still incomplete but usable) is on 2. The software is available on 3. Video showing how to hook up the v3 board I made a few videos to show how to use the new software:
1. sBitx v3- first look
2. sBitx v3 - Basics 3. sBitx v3 - CW operation 4. sBitx v3 - FT8 operation
I hope you all have a great time with the radios and without the radios this season.
73., f
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