Astron RS70A

The Astron RS-70A is a heavy-duty, linear, regulated DC power supply designed primarily for high-current amateur and commercial radio applications, known for its reliable performance and low noise output.
Specifications
According to information from Astron Corporation and various retailers, the key specifications of the Astron RS-70A power supply are as follows:
Attribute Detail
Output Voltage 13.8 VDC (internally adjustable from 11-15 V)
Continuous Amperage Output 57 Amps
ICS* (Surge) Amperage Output 70 Amps
Regulation Solid state electronically regulated
Ripple Voltage Less than 5 mV peak to peak (full load and low line)
Input Voltage 105-125 VAC (220V models available by special order)
Protection Fold-back current limiting and crowbar over-voltage protection
Cooling Heavy-duty heat sink and fan cooled
Dimensions 6″ H x 13.75″ W x 12.125″ D
Weight 48 lbs (shipping weight)
Terminals 1/4″-20 Screw Type
*ICS stands for Intermittent Communication Service, or Surge, amperage output.
User and Expert Opinions
Reviews from various sources consistently highlight the quality and reliability of the Astron RS-70A power supply.
Durable and Well-Made: The unit is often described as “bulletproof” and built like a “tank,” with heavy-duty components ensuring long-term dependability.
Low Noise and Ripple: Users praise the linear design for producing “ZERO hash noise” and low ripple, which is crucial for sensitive radio and communication equipment.
Performance: The power supply performs well under heavy and continuous loads, with users noting it can power high-wattage amplifiers and multiple radios simultaneously without issues.
Simplicity: Some users appreciate its straightforward design, noting it’s a “raw power model, no setting or display” (on the non-metered version), focused purely on performance.