Astron RS35A

The Astron RS-35A is a heavy-duty, linear-regulated DC power supply designed primarily for powering mobile DC radios and ham radio equipment, known for its robust and reliable performance.
Key Specifications
Attribute Detail
Input Voltage 105-125 VAC
Output Voltage 13.8 VDC (internally adjustable from 11-15 VDC)
Continuous Output Current 25 Amps
ICS (Surge) Output Current 35 Amps (Intermittent Communication Service, 50% duty cycle 5 min on, 5 min off)
Regulation Solid-state electronically regulated
Ripple Less than 5mV peak to peak (full load and low line)
Protection Fold-back current limiting and crowbar overvoltage protection
Dimensions (H x W x D) 5″ x 11″ x 11″
Weight Approx. 25-27 lbs
Cooling Heavy-duty heat sink (no fan)
Features and User Insights
Durability: Reviewers note the power supply’s sturdy construction and thick metal casing, which contributes to its long-lasting and dependable nature.
Performance: Users find it dependable and capable, consistently maintaining a stable voltage for powering various devices effectively.
Quiet Operation: The unit is generally very quiet, as it uses a heavy-duty heat sink for cooling rather than a fan, producing only a very soft hum.
Connectivity: The standard model features 1/4″-20 screw-type power terminals; some variants, such as the Astron RS-35A-AP, also include front-mounted Anderson Power Poles for added convenience.
Applications: It is widely used and highly recommended for amateur radio enthusiasts and for powering other DC equipment requiring a clean, stable power source.