Astron RS-4A Linear Power Supply
Best dependable power source for low voltage radio enthusiasts.
A dependable, linear power supply designed for clean, regulated DC output. It prioritizes stability and equipment safety over modern features, making it a classic choice for radio enthusiasts who need consistent power for their transceivers.
$99.95
at
DX Engineering
Who it's for
- Ham radio operators requiring clean power for sensitive signal reception.
- Long-term users seeking a dependable, 'set it and forget it' solution.
- Hobbyists who prefer simple, no-fuss hardware for their workbench.
Who should skip it
- Mobile users or those with limited desk space for heavy gear.
- Operators working in poorly ventilated spaces or tight enclosures.
- Power users needing to drive high-output transceivers or multiple devices.
Performance breakdown
Signal Cleanliness
Linear design eliminates the electrical noise common in cheaper switching supplies.
Thermal Management
Heavy-duty heat sink effectively dissipates heat without relying on noisy fans.
Safety Reliability
Crowbar protection and fold-back limiting provide robust insurance for expensive radios.
Voltage Stability
Maintains consistent 13.8 Vdc output even under fluctuating load conditions.
Build Durability
Rugged metal chassis is built to survive years of stationary operation.
Output Capacity
Limited to 3A continuous, making it best suited for low-power transceivers.
Key Specs
Power Output
4.0A peak / 3.0A continuous at 13.8 Vdc
Input Voltage
120 VAC
Power Supply Type
Linear, Regulated
Dimensions
6.125 in. W x 3.500 in. H x 7.250 in. D
Weight
5.00 lbs
Cooling
Heat sink
Safety Features
Fold-back current limiting, Crowbar over voltage protection
Output Terminals
Rear panel
Voltage Adjustment Range
11.0-15.0 VDC
Know before you buy
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Ask Metto anything about the Astron RS-4A Linear Power Supply before you decide.
