Astron
Astron VS-35M-AP Series Linear Power Supply
Best reliable power source for amateur radio enthusiasts and communication equipment.
The Astron VS-35M-AP Series Linear Power Supply is engineered for reliable and stable 13.8VDC power delivery. It offers a continuous output of 25 Amps and an Intermittent Current Service (ICS) of 35 Amps, making it suitable for demanding applications. The unit features user-friendly front panel controls for voltage and current adjustment, along with dual meters to easily monitor output status. For convenient connectivity, it includes Anderson PowerPoles. This power supply operates without a fan, ensuring quiet performance, and is built for durability and consistent power.
$398.95
Owner Satisfaction
4.7
/ 5
Category Rank
13
/ 776
#13 in Power Control Units
Price vs Category Average
-57%
Below average
Continuous Duty Output
2513.8
/ Amps @ VDC
Who it's for
- Amateur radio operators requiring interference-free signal clarity
- Professionals needing equipment built for years of continuous service
- Lab technicians demanding rock-solid voltage stability under heavy loads
Who should skip it
- Users with limited workspace or those needing portable power solutions
- Budget-conscious buyers prioritizing energy efficiency and lower heat output
- Shoppers looking for the most affordable power supply options
Performance breakdown
Output Stability
Linear design delivers exceptionally clean and consistent voltage for sensitive equipment.
Operational Noise
Fanless architecture ensures completely silent operation during high-demand tasks.
Build Durability
Heavy-duty construction provides a robust foundation for long-term professional use.
Connectivity Convenience
Integrated Anderson PowerPoles allow for rapid and secure cable connections.
Monitoring Precision
Dual front-panel meters offer clear, real-time visibility into power status.
Current Flexibility
Adjustable current limiting provides versatile protection for various hardware configurations.
Key Specs
Continuous Duty Output
25 Amps @ 13.8VDC
Intermittent Current Service (ICS)
35 Amps @ 13.8VDC
Dimensions
5 x 11 x 11 inches
Shipping Weight
29 lbs
Fuse Rating
AGC 8A
Power Terminals
1/4"-20 Screw Type
AC Current Draw (Full Load)
5.7A
Adjustable Current Limiting Range
1.5A to maximum
Features
- Provides stable, continuous 13.8VDC power
- Adjustable current limiting for flexibility
- Front panel controls for easy adjustment
- Dual meters for output monitoring
- Includes Anderson PowerPoles for convenient connection
- Quiet, non-fan-cooled operation
- Robust construction for demanding use
What customers say
Customers view the Astron VS-35M-AP as the benchmark for reliable power supplies in communications. The core praise centers on its rock solid reliability and superior build quality, often lasting for decades. Its linear design is highly valued because it delivers ultra low noise, which is critical for sensitive receiving equipment, effectively eliminating interference common with other supplies. While the unit is heavy and generates heat, users accept these trade-offs for the unmatched clean, stable power regulation. For serious operators prioritizing longevity and noise suppression over portability, this premium choice remains highly recommended.
Know before you buy
The 25-amp continuous rating represents the load the unit can handle indefinitely, while the 35-amp intermittent rating is for short-term peak demands. This makes it ideal for radio equipment that requires high power bursts during transmission but lower power during standby.
No, this unit is designed for convection cooling and operates without a fan. This ensures completely silent performance, which is a significant advantage for quiet environments like recording studios or home offices.
Yes, the unit features front-panel controls that allow you to adjust the current limiting range from 1.5 amps up to the maximum capacity. This provides flexibility for protecting sensitive equipment from over-current conditions.
The unit is equipped with 1/4"-20 screw-type terminals for secure wire connections. Additionally, it includes Anderson PowerPoles, which offer a convenient, standardized way to quickly connect and disconnect your devices.
The unit includes integrated short-circuit and over-current protection to safeguard both the power supply and your connected equipment. It also uses a standard AGC 8A fuse to prevent damage from electrical faults.
Yes, as a linear power supply, it is engineered to provide a very stable and clean 13.8VDC output. This makes it an excellent choice for sensitive communication gear or precision electronics that are susceptible to the electrical noise often found in switching power supplies.
Still have a question?
Ask Hayley anything about this product before you decide.