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I've been playing around with a PCB design that uses a mosfet for reverse polarity protection. Diodes burn a decent amount of power, this mosfet is significantly less. It also has over volt

This code will also work on the raspi pico, went to a fast mcu for better perfomance, the virtual machine ie there for develoment.

so I have 2m and 6m code emulations , I have to add in memory storage , but I figure I would share what I have done. its more basic as mine will be for sota/pota and I dont seen the need for

Richard, I just found time to put the circuits together. I am more like a magazine editor than a writer. Plus, my business experience has allowed us to assemble a very low cost radio manufacturing

PS another diode the other way round feeding a small buzzer gives an audible alarm if the power is upside down :-) !!!!!

Another approach which I have not seen proposed is to switch the power to the radio with a relay with contacts of suitable current handling. The relay coil is fed by a diode so only comes in when the

Richard, The comparable radio with the Xeigu is the ubitx. It is completely usable out of the box. We do, offer replacements or refunds for non-working radios. I still think this is a matter of

It is an odd thing though, the Elecraft KH1 is a CW only radio, selling for 600 USD. Not really, if you add all the essentials, it stacks upto 1000 USD. Yet, they sell about 3000 radios per month.

Send me an email at vu3sua@... Will send some pictures.

I think the crowdfund could be the best way to check demand (for the assembled units). Set up a goal of 20,000$ (200$? * 100) and see what happens. If the goal is not reached the money gets back, no

We would produce it if there were demand for it. It takes 100 pcbs to be viable. [email protected]> wrote:

@Farhan Why don't we crowfund this? 200$ each, with a discount coupon for the same amount as perk.

At the risk of replying to my own post .... I found this reference in the list archive but the page no longer exists? ... https://ubitx.com/2018/07/28/digital-adapter-board/ The Wayback Machine

Does anyone have the pinout/wiring diagram for the "Digital Adapter Board" as sold by https://amateurradiokits.in/product/digital-adapter-board-for-ubitx-and-bitx/ Its been a while since I bought the

Amazing!

Reverse diode and a fuse is all I use on any of my projects. Total cost about $0.50. Voltage drop equal zero.

I also use the fet method, not as simple as a diode, but voltage drop way lesd [email protected]> wrote:

I use Powerpoles for battery and PSU connections.? I also use KC9ON's FET-based devices in place of diodes.? They're good for up to 50 V and 7