Re: QDX version 1 voltage regulator mod?
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Hi Steve
Replacing the voltage regulator wasn't necessary. It IS necessary to make sure you fit the 10uF electrolytic capacitor across the 12V supply voltage. If that was done, the AMS1117 should be fine. And even more so, considering that you are using a lower voltage?9V supply.?
On Mon, Feb 26, 2024 at 12:45?PM Stephen Farthing G0XAR JO92ON97 < squirrox@...> wrote: Greetings from England,?
I built my QDX vsn 1 from the first batch for 9 volts. Tested it and tried it out then put it aside. Now I want to use it for WSPR. I saw a video which recommended replacing the voltage regulator and taking the output from the higher voltage regulator to the lower voltage regulator. Is this really necessary ? I will probably be running it with less than 9 volts as 5 watts output seems a bit excessive.?
Has anyone tried using the QDX with a microcontroller for WSPR??
I ordered the latest version for the higher bands yesterday. I’m looking forward to building it.?
73s Steve G0XAR?
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