Tekpower Analog Display TP30SWI 30 Amp DC 13.8V Switching Power Supply with Noise Offset

I purchased this to replace a Pyramid power supply that was absolutely drowning my HF radio in RF spikes. I had expected this one to be the same way, but figured the noise offset function would allow me to shift these away from the frequency I was using.No need! Somehow, this power supply produces NO detectable RFI on my radio. At the same time, it's less than half the size of the Pyramid, but puts out the same amperage. It's also whisper quiet, and if the cooling fan has ever come on, I haven't been able to hear it.I like that the voltage is fixed at 13.8v, which is exactly what a "12 volt" radio wants. There's no voltage adjustment knob that I can accidentally bump, and cause problems for myself. The PowerPole connectors are fantastic, though I wish they had put them on the back of the power supply, rather than in front. The binding posts are solid, and accept ring terminals as well as banana plugs. They are NOT cross-drilled to accept a bare wire, however.I don't know if I won the lottery with the particular unit that I received, but this is head and shoulders better than any previous power supply I've used. I wouldn't trade it for a linear power supply of the same rating.

Bought this compact DC power supply to use with my new FT-710. Has Anderson powerports in the front and regular connector jacks on the rear to wire in my FT-710's power cord and a power cord to illuminate my AT2K's meter light. This one is nice because it incorporates an analog Volts/Amps meter on the front. The rear DC ports lets me run my power cords out of the way behind my equipment. The PS's fan comes on occasional when keyed up for a long time but is still pretty quiet. Good compact PS for the money.

Bought this for use with an ICOM 7300 Ham radio. This is the first power supply I have ever purchased and it works as outlined in the description. I have been using it for about 2 months. It is well built and has caused no problems with my radio. I would buy this again.

Recommended by a HAM friend. No noticeable noise or heat issues. Works as advertised.

This is probably a great low cost power supply, but unfortunately I won't know until I get my HF transceiver. I just thought I'd rather have the power supply with no radio than the other way around. Other than the abundance of good reviews, I absolutely HATE those damn cigarette lighter type connectors, especially on the front panel. Will post back whenever I get to use it.UPDATE: Since my semi review last Nov., I've gotten an FT-710 and keep the power supply on 24/7. I encountered some RF noise when the antenna was within several feet of the shack, but that was also the case with the computers, monitors, and UPS's! With a better antenna further way, zero problems and I have no incentive to substitute a linear supply. So far I've transmitted very little, so the supply has hardly been taxed, but I feel comfortable calling it a winner!ANOTHER UPDATE (04-29-2025): The supply was acting flawlessly until early this month, when it suddenly switched off for no apparent reason - no power indicator light, no meter illumination or voltage reading, and of course, no power out. I was merely listening with the radio when this occurred; and using FT8 never exceeded an RF power of 25 watts.Removing the cover revealed no physical damage, no odor, and nothing burnt. No success with another power cord and the fused wasn't blown. While I'm a retired EE, I'm not equipped to troubleshoot and have no idea what failed. However, when handling the supply, I heard a rattling sound that proved to be a small lose screw in the enclosure.After talking with Tech Support, I shipped it off for warranty repair on April 3 and received a replacement supply a few weeks later. Out of curiosity I inquired what the problem was, and was simply told it was a failed component. Duh! Anyway, other than costing $26 to ship, I can't fault their warranty service. Meanwhile, I bought a Samlex SEC—1235P-M and now have a backup. Unless the price goes up dramatically or the Tekpower fails again, I'll still give it a high recommendation.

Very nice power supply! This unit functions very well and has features that perform well. It has the front panel noise control, which I still haven't needed having it turned on while using my HF Radio, but it is a nice feature to have and one of the main reasons for buying it. Meter on front panel works well and the V/A selector switch is conveniently placed as is the power switch. Nicely built, seems sturdy, with sturdy screw terminals, but haven't used the power pole type receptacles on front panel. Unit seems to be a copy of a couple of famous brands performing very well. This unit has gotten good reviews on a couple of Amateur Radio dealer sites also.

ProsDelivers 20 amp continuous powerWorks well with my G90 and 7300Low noise on higher frequencies (7 MHz and above)Easily handles peaks of 30 ampsAuto on/off fanPowerpole connectors on the fromLight weightOffset knob to move the birdiesConsFan is loud when runningGenerates birdies on 1.8 MHz and 3.5 MHzWon’t work with motors

I originally ordered one of these to power my in-home vhf rig. I was so happy with it, that I got another to replace an aging supply I had been using for my HF rigs. This power supply has a great noise level, good monitoring, solid power connectors and is quiet in terms of electrical noise as well. Its a power supply so it isn't something you write home about ... unless it fails. But this one has worked absolutely reliably. Would recommend.