I got to test the SP-320-12 switching power supply input 100-240 V, output 12 V 25 A. Technical data from the manufacturer in pdf at …om3cfr.webnode.sk/Technique/impulzny-zdroj-sp-320-12/… The output voltage can be set in the range of about 11-13 V
After the load test, I tried to connect it to my station. SSB connections were normal, modulation rated as very good. I didn't notice any interference on the reception. I was more concerned about CW, but the rating on the band was again as very good tone. The price is around 65 Euros. In this series, there are several types of power supplies with options for voltage and power selection. I do not have the possibility of more precise testing and I do not know if it would really be suitable for amateur radio operation. Thank you in advance for your opinions.