ASTRON SL-115M Power Supply Switch Radio Communication 13.8V On/off

( Brand: Astron ), ( Manufacturer Part Number: SL-115M ), ( Compatible Brand: Universal ), ( Type: Power Supply ), ( Features: On/off Switch ), ( Year Manufactured: 13.8 V ), ( To Fit: Two-way Base Radio, Ham Radio Transceiver )

Review ASTRON Power Supply 13.8v On/off Switch Radio Communication

The **Astron SL-115M** is a robust, high-performance power supply unit meticulously engineered for demanding radio communication applications, offering unparalleled reliability and versatility in both amateur and professional setups. Designed with precision, this 13.8-volt linear power supply delivers a stable, clean DC output of **115 watts** (13.8V 8.4A), making it an ideal choice for powering high-power transmitters, amplifiers, linear amplifiers, and other RF equipment where consistent voltage regulation is critical. Its **fully adjustable output range** spanning from **12.6V to 14.4V** ensures compatibility with a wide array of radios, repeaters, and accessories, allowing operators to fine-tune performance for optimal efficiency and longevity of connected devices. The inclusion of a **high-quality on/off switch** with a tactile feedback mechanism ensures effortless control, while its **durable metal enclosure** provides robust protection against electrical interference and environmental factors, contributing to a longer operational lifespan.

Beyond its technical specifications, the Astron SL-115M stands out for its **low ripple and noise performance**, which is essential for minimizing interference in sensitive radio systems. The unit incorporates **overload and short-circuit protection**, safeguarding both the power supply and connected equipment from potential damage due to sudden surges or mishandling. Its **fanless design** in the base model (with optional fan-equipped variants available) ensures quiet operation, making it suitable for use in home stations, field deployments, or mobile setups where noise reduction is a priority. The power supply s **compact yet sturdy build** allows for easy integration into existing rigs, while its **terminal block connections** provide secure and reliable electrical contacts for stable power delivery.

Whether used in a dedicated ham shack, a portable QRP setup, or as part of a larger communication network, the Astron SL-115M excels as a dependable workhorse for radio enthusiasts and professionals alike. Its combination of **high wattage capacity, precise voltage regulation, and rugged construction** makes it a standout choice for those seeking a power supply that can handle the demands of modern radio communication without compromise. Built to last, this unit embodies Astron s reputation for quality engineering, ensuring that operators can focus on their transmissions with confidence, knowing their equipment is powered by a reliable and efficient source.

### Pros and Cons of buying a Astron SL-115M Power Supply (13.8V with On/Off Switch) for Radio Communication

1. **Reliable Performance** The Astron SL-115M is a well-regarded power supply in the ham radio community, known for its stability and durability. It provides a clean 13.8V DC output, which is essential for sensitive radio equipment.

2. **Built-in On/Off Switch** Unlike many basic power supplies, this model includes a physical on/off switch, allowing for easy control of power delivery. This is particularly useful for conserving battery life when the radio is not in use.

3. **High Current Output** With a maximum output of 115 amps, this power supply can handle high-power radios, amplifiers, and other demanding equipment without overheating or failing prematurely.

4. **Compact and Portable** The SL-115M is designed to be portable, making it suitable for field operations, portable setups, or emergency communications. Its size allows it to fit in a backpack or vehicle without taking up too much space.

5. **Good Voltage Regulation** Astron power supplies are known for maintaining a steady voltage output, which is critical for preventing damage to radios and other sensitive electronics.

6. **Compatibility with Various Devices** The 13.8V output is standard for many ham radio transceivers, amplifiers, and accessories, making it a versatile choice for different setups.

7. **Durable Construction** Astron products are generally built to last, with sturdy materials and robust internal components that can withstand frequent use and varying environmental conditions.

8. **Positive User Feedback** Many users in the ham radio community report positive experiences with Astron power supplies, citing reliability and performance as key advantages.

---

1. **Price** Compared to some basic or no-name power supplies, the Astron SL-115M is relatively expensive. While it offers high quality, budget-conscious users may look for cheaper alternatives.

2. **Weight** While portable, it is heavier than some smaller or less powerful power supplies. This could be a consideration for users who prioritize minimal weight in their portable setups.

3. **Limited Features** Unlike some advanced power supplies, the SL-115M lacks features such as remote control, digital displays, or programmable settings. It is a straightforward power supply with basic functionality.

4. **No Built-in Protection Against Reverse Polarity** Some users may prefer power supplies with reverse polarity protection to prevent damage to connected devices in case of incorrect wiring.

5. **Dependence on External Power Source** The power supply itself does not include a battery; it requires an external power source (e.g., car battery, inverter, or solar panel) to function. Users must ensure they have a reliable power input.

6. **Potential for Overheating in High-Demand Scenarios** While the SL-115M is designed to handle high currents, prolonged use at maximum capacity in hot environments could lead to overheating if adequate ventilation is not provided.

7. **No Built-in Fuses or Circuit Protection** Some users may prefer power supplies with built-in fuses or circuit breakers for added safety, though the SL-115M is generally safe when used correctly.

---

The Astron SL-115M is an excellent choice for ham radio operators who prioritize reliability, performance, and portability. Its high current output, clean voltage regulation, and durable construction make it a top-tier power supply for demanding radio setups. However, its higher cost and lack of advanced features may not appeal to users on a tight budget or those seeking more sophisticated functionality. If you need a dependable, no-frills power supply for high-power radio communication, the SL-115M is a strong recommendation. For budget-conscious users or those with simpler needs, there may be more affordable alternatives available.

---

If you require a power supply for high-power radio operations, portable setups, or emergency communications, the **Astron SL-115M is highly recommended**. Its reputation for reliability and performance justifies its cost, especially for serious radio enthusiasts. However, if you are working with lower-power equipment or have a limited budget, consider evaluating other options such as the Astron SL-100M or other mid-range power supplies that may better suit your needs. Always ensure that your power supply matches the requirements of your specific radio equipment to avoid compatibility issues.

Details:

Astron SL-115M Power Supply 13.8V On/Off Switch for Radio Communication.

part #: sl115m prices

• $59.95-$375.00

specifications powesupplipar:

• brand: Astron
• mpn: Sl-115m
• compatible brand: Universal
• type: Power Supply
• features: On/off Switch
• year manufactured: 13.8 V
• to fit: Two-way Base Radio, Ham Radio Transceiver

returns powesupplipar:

• policy: No Returns

seller powesupplipar:

• # reviews: 28
• rating: 100.0%
• city: Pasadena, Texas

general powesupplipar:

• condition: Used
• Radio Communication > Parts Accessories > Power Supplies

offer powesupplipar:

• quantity: 1
• sold: 0
• best offers: True
• availability: In Stock
• started: March 18, 2026
• options: Ship-to-home

payments powesupplipar:

• other
• credit card: Visa
• wallet: Google-pay
• money order

shipping powesupplipar:

• service: USPS Ground Advantage
• class: Standard
• carrier: USPS
• cost: $29.34
• type: Calculated
• transit: 5-10 Days

Astron SL-115M Is Similar To:

• Na Astron Power Supply Converter By 012302323374 (40% similar) ...(July 16th, 2018)
• 0988665433 Astron Power Supply (37.6% similar) ...(October 24th, 2018)
• 10-14vdc Astron Rs-12a Ham Power Supply For Radio 12amp Old School Heavy (50.3% similar) The power output is steady. It works, I currently have it adjusted to 14 volts . Asp 2 sometimes the neon power on light flashes, with is kind of normal for neon lights in older things. 10 12PSU this is an older beastly pus...(April 13th, 2016)
• 1212-18 Astron Model Switching Regulated Converter For Dc Positive Ground (37.5% similar) The black and red have not been stripped. The white and green wires have been stripped. 8v dc negative ground out on my meter without a load. This is odd because the white black red green are input and output pairs. I tested this with 12V dc 2 amps positive ground in and did indeed get 13. Seems to ...(November 16th, 2018)
• 209050016 Astron Corporation Power Supply (35.7% similar) Model VS-70M output 2-15 CDC 57 amps cont at 14VDC70 incs 50 duty cycle 34 10 VDC16 5VDC serial 209050016INPUT 115V 60 Hz 12A fuse...(July 27th, 2017)
• 2412-20 Astron Power Converter Model Regulated (30.8% similar) Ground only with instruction sheet. New in box Astron model number: regulated voltage converter converts 24 volts battery source to 13...(February 17th, 2017)
• 30-m Astron Power Supply (40% similar) Great power supply. Like new condition...(February 12th, 2017)
• 9210060 Astron Corporation Power Supply (36.4% similar) Model VS-50M output 2-15 CDC 37 amps cont at 14VDC50 incs 50 duty cycle 22 10 VDC16 5VDC serial 92100060INPUT 115V 60 Hz 10A fuse...(July 26th, 2017)
• 99030023 Astron Power Supply 70 (39.2% similar) Power supply Astron 70 amps works good condition...(July 1st, 2017)
• As-70m Astron Power Supply 13.8v (48.5% similar) Also includes the output cord shown. Here is a good used Astron AS-70M power supply. It is tested and works great...(July 3rd, 2017)
• 102952-11 Astron Power Supply With Meters And Adjustable Voltage 35 Amp R1 (37.2% similar) Stifles warranty V2. We combine shipping for jewelry only...(July 6th, 2016)