$20 100 AMP 12v Power Supply: Good for Ham Radio?? || HP DPS-1200 Review
Channel: N0SSC
Date: 2020-05-06

The HP DPS-1200 is a $20 1200w power supply, capable of OVER 100 AMPS! But is it really noisy on the HF Bands? Maybe a little, but it's not bad for $20! I compare the noise with a battery, a Radioshack 3A 12V unit, and the HP unit on my Icom IC-7300.

These power supplies are surplus from somewhere, since there's so many on eBay and they're so unbelievably cheap - see for yourself at https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313.TR2.TRC0.A0.H0.XHP+DPS-120.TRS0&_nkw=HP+DPS-1200&_sacat=0

I bought mine for $24 shipped, and it was delivered in 3 days. These units are often bought by RC hobbyests to charge lithium/LiPo batteries quickly since they supply so much current.

You will have to do a small resistor mod to get it to turn on, and figure out how to connect some wires to the large PCB trace contacts - I used a drill and some hardware.

Here's the resistor mod instructions: https://blog.seidel-philipp.de/hp-dps-1200fb-power-supply-hack-for-charging-lipos/

Even more info here: https://endless-sphere.com/forums/viewtopic.php?t=87356

Don't want to buy on eBay? You can get a sub-$20 power supply that provides 30A 13.8v here: https://amzn.to/2WxbyhE

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