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I think an assumption I made may be suspect. I assumed I would be able to use the Megawatt S-400-12 I have coming as the 10 volt source for the bias adjustment since it goes as low as 9.5 volts. The radio itself will be powered by my Powermax PM4-120 PSU.  Is it safe to use the S-400-12 as the 10 volt source for this bias voltage test or should I stick to a "real" dedicated bench supply (that is not too expensive)?


This is the general type of bench power supply I am considering getting to help me become more self-sufficient in trying to fix stuff I break. I see ones like Siglent makes but they are too expensive for me and overkill for my needs. Having the proper tools when working on cars/motorcycles/snowmobiles has made all the difference in the world to me and I think it'll be the same here.