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Rectangular metal power supply unit with front panel controls and output connectors

Tekpower

Tekpower TP30SWII 30A 13.8V Analog Switching Power Supply with Noise Offset

SKU CH-72NB-VKBVJ

A 13.8 V fixed or 9-15 V adjustable switching supply delivering up to 30 A with a noise-offset knob to suppress switching noise for radio gear

  • Delivers stable 13.8 V DC for ham and CB radio gear
  • Adjustable 9–15 V output covers a range of communication devices
  • 30 A maximum current with front snap-in and rear cigar-lighter connections
  • Noise-offset knob reduces switching interference for clearer signals
  • Built-in overheat and short-circuit protection safeguards connected equipment

Ham and CB radio power supply

The Tekpower TP30SWII delivers fixed 13.8 V DC and an adjustable 9 to 15 V range at up to 30 A for amateur and CB radio equipment. It runs from 110 V AC at 60 Hz and includes overheat and short-circuit protection for safe continuous operation.

Rear main output plus front cigar and snap

A rear-panel DC terminal handles the full 30 A load while a front cigar socket is rated at 10 A and a snap-in terminal provides another 30 A path. The analog noise-offset knob lets operators suppress switching noise that would otherwise interfere with sensitive communications gear.

Noise offset knob and fused input

An 8 A input fuse protects the supply from mains faults and the front-panel offset control reduces ripple below 80 mVp-p at rated load without extra accessories. The package supplies the power unit only, so users add their own cables and mounting hardware.

How it compares

Measured against everything we stock in AV Accessories & Components, at today’s prices. Recalculated every night.

Price $161.99
Pricier than about 84% of the 3,838 comparable items (median $41.99).

Specifications

No published specifications for this item yet.

Questions about this item

What does the 110 V AC 60 Hz input and 30 A maximum DC output mean for real-world use?

The unit runs from a standard 110 V AC 60 Hz wall outlet and delivers up to 30 A at 13.8 V fixed or 9–15 V adjustable, with the front snap-in terminal rated for the full 30 A and the cigar socket limited to 10 A.

Will the 7.5 by 2.8 by 7.5 inch chassis fit on my bench or in a rack?

The supply measures 7.5 inches wide, 2.8 inches high and 7.5 inches deep, weighing 6 lb, so it sits on a shelf or bench without rack ears and leaves room for rear cable clearance.

How do I connect the load and adjust the noise offset without causing a fault?

Wire the load to the rear main output or front snap-in terminal for up to 30 A, use the cigar socket only up to 10 A, set the voltage between 9 V and 15 V before powering on, then turn the noise offset knob only after the supply is running to suppress any switching noise.

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