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

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

Bottom line: The Tekpower Analog Display TP30SWI 30 Amp DC 13.8V Switching Power Supply: Steady fixed 13.8V DC output rated 30A continuous, sized for ham and CB radio gear; main trade-off: fixed 13.8V output only — no adjustable voltage for bench testing other gear.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ Steady fixed 13.8V DC output rated 30A continuous, sized for ham and CB radio gear
  • ✓ Noise offset knob dials out switching interference on communication frequencies
  • ✓ Dual outputs: rear main DC terminals plus a front snap-in connector
  • ✓ Fused with built-in overheat and short-circuit protection

Cons

  • ✗ Fixed 13.8V output only — no adjustable voltage for bench testing other gear
  • ✗ Switching design can introduce more RF noise than a linear supply
  • ✗ Analog meter only; no digital voltage or current readout
  • ✗ 30A ceiling limits use with amplifiers that draw higher current

Manufacturer description

The TekPower TP30SWI is a professional analog DC power supply for powering many devices such as Ham/CB radio and amplifiers. It is a highly stable, fused, high quality switching power supply with 13.8V fixed DC power output, and 30A max current. It has a main DC output on the back of the unit and a snap in output on the front. It has excellent line and load regulation, low ripple and noise. It is designed to minimize switching noise specifically for communication uses. When there is noise, you can use the noise offset knob to eliminate it. It has many safety protection such as overheat and…

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SpecPicks Verdict

SpecPicks scored Tekpower Analog Display TP30SWI 30 Amp DC 13.8V Switching Power Supply using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Tekpower's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • 13.8V DC Power Supply for Ham/CB Radio
  • 30A MaxCurrent Output
  • DC 13.8V Fixed Output
  • Noise offset
  • 1 Year USA warranty

Full Specifications

BrandTekpower
ColorBlack
Amperage30 A
Unit Count1 Count
Form Factorbenchtop
Model NumberTP30SWI
Input Voltage110 volts_of_alternating_current
Maximum Power414 watts
Output Current30 A
Output Voltage13.8 volts
Output Wattage414 watts
Item Dimensions7.5 x 2.8 x 7.5 inches
Mfr Part NumberTP30SWI

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Tekpower Analog Display TP30SWI 30 Amp DC 13.8V Switching Power Supply with Noise Offset is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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