Astron RM35A

The Astron RM35A is a reliable, heavy-duty, linear, regulated DC power supply designed for medium-duty base station and communications applications. It is a popular model in the amateur radio community known for its durable construction and clean, stable power output.
Key Specifications
According to various merchant and manufacturer specifications, the Astron RM35A power supply has the following characteristics:
Input Voltage: 105-125 VAC
Output Voltage: 13.8 VDC (internally adjustable from 11-15 VDC)
Continuous Output Current: 25 Amps (some sources indicate 27 amps)
Intermittent Surge Current: 35 Amps
Ripple Voltage: Less than 5 mV peak to peak (full load and low line)
Regulation: Solid-state electronically regulated, maintaining regulation at low line input voltage.
Protection: Features fold-back current limiting and crowbar overvoltage protection.
Cooling: Heavy-duty heat sink design for fanless, quiet operation.
Dimensions: 5.25″ H x 19″ W x 12.5″ D.
Weight: Approximately 38 lbs.
Terminals: High current terminals are located on the rear panel.
Chassis Type: Standard 19-inch rack mount.
User and Expert Opinions
Reliability & Durability: The power supply is praised for its exceptional longevity and rugged, heavy-duty build quality, with many users reporting over 20-25 years of flawless operation.
Performance: Users report that it provides very stable and clean power with no RFI (Radio Frequency Interference), making it ideal for sensitive radio equipment.
Noise Level: Its fanless operation means it runs silently, which is a major advantage over noisier switching power supplies.
Value: Reviewers often mention the excellent value for the price, considering its robust construction and long service life.