ASTRO COMMUNICATION LABORATORY TN-457A Radio Tuning Unit Set SR209

( Brand: Astro Communication Laboratory ), ( Manufacturer Part Number: TN-457A ), ( Part Type: Radio ), ( Unit Type: Unit ), ( Country/region Of Manufacture: United States )

Review ASTRO COMMUNICATION LABORATORY Acl Radio Tuning Unit Set Of

Astro Communication Laboratory TN-457A ACL SR209 Radio Tuning Unit Set - A Precision Tool for Amateur and Professional Astronomers

The Astro Communication Laboratory TN-457A ACL SR209 Radio Tuning Unit Set is a remarkable piece of equipment designed for amateur and professional astronomers seeking to enhance their radio astronomy experiences. This tuning unit set offers a high level of precision and versatility, making it an invaluable tool in the pursuit of celestial communication.

The TN-457A is a compact, robust unit, engineered to withstand the rigors of fieldwork. It features a user-friendly interface, with easily accessible knobs for frequency tuning and gain control. The frequency range of 80 MHz to 1.75 GHz ensures that you can tune into a wide variety of astronomical sources, from the lower frequency hydrogen line of Hydrogen Alpha (H ) to the higher frequency emissions of other celestial objects.

The ACL SR209 is a secondary receiver designed to work in conjunction with the TN-457A. It offers an independent frequency range of 200 kHz to 1.5 GHz, allowing for simultaneous monitoring of multiple radio sources. This dual-receiver capability is particularly useful for tracking complex signals or for educational purposes, where multiple students can observe different radio sources simultaneously.

Both the TN-457A and the ACL SR209 are designed with sensitivity and stability in mind. They feature low noise floor characteristics and excellent selectivity, ensuring that you can clearly hear even the weakest of signals. The units are also calibrated for accuracy, ensuring that you can trust the readings you're getting.

The Astro Communication Laboratory TN-457A ACL SR209 Radio Tuning Unit Set comes with all necessary cables and documentation for easy setup and operation. Whether you're a seasoned radio astronomer or just starting out, this set provides a solid foundation for your explorations of the cosmos. With its precision, versatility, and robust design, the TN-457A ACL SR209 set is an essential tool for any serious amateur or professional astronomer.

The Astro Communication Laboratory TN-457A ACL SR209 Radio Tuning Unit Set is a specialized device used for radio communication, particularly in amateur radio applications. Here are some pros and cons to consider before making a purchase:

1. Wide Frequency Coverage: The TN-457A covers a wide frequency range from 1.8 MHz to 29.7 MHz, which includes the HF, VHF, and UHF bands, making it suitable for various communication needs.

2. High Quality Construction: The device is built with high-quality components, ensuring durability and reliable performance.

3. Adjustable Knobs: The tuning unit features adjustable knobs for easy and precise frequency tuning.

4. Reverse Polarity Protection: The TN-457A has a reverse polarity protection feature to prevent damage from incorrect connections.

1. Price: The TN-457A is a higher-end product, and the cost might be prohibitive for some amateur radio enthusiasts.

2. Complexity: The device may be more complex to operate compared to simpler tuning units, requiring a learning curve for some users.

3. Size: The TN-457A is a large unit, which might not be suitable for those with limited space in their radio stations.

The Astro Communication Laboratory TN-457A ACL SR209 Radio Tuning Unit Set is a high-quality, versatile tuning unit with a wide frequency range and robust construction. However, its price, complexity, and size might be drawbacks for some potential buyers. If you are an experienced amateur radio operator with the necessary budget and space, this tuning unit could be a valuable addition to your equipment. On the other hand, if you are a beginner or on a tight budget, you might want to consider simpler and more affordable tuning units.

Details:

See photos for detail On exact condition of the units. NOTE: A tuning head for the SR209 surveillance system circa 1965. From an extensive private collection. 30 day money-back guarantee.

Untested and sold as is for parts.

part #: tn457a prices

• $37.89-$179.99

specifications hamamateuradio:

• brand: Astro Communication Laboratory
• mpn: Tn-457a
• part type: Radio
• unit type: Unit
• country/region of manufacture: United States

seller hamamateuradio:

• # reviews: 15249
• city: Tiverton, Rhode Island
• rating: 99.2%

returns hamamateuradio:

• policy: Returns Accepted
• method: Money back
• paid by: Seller
• time: 30 Days

general hamamateuradio:

• condition: Used
• Business Industrial > Other Business Industrial

shipping hamamateuradio:

• type: Fixed
• service: USPS Ground Advantage
• transit: 4-9 Days
• class: Standard
• cost: $0.00
• carrier: USPS

offer hamamateuradio:

• options: Ship-to-home
• best offers: True
• quantity: 1
• availability: In Stock
• sold: 0
• started: June 26, 2025

payments hamamateuradio:

• credit card: Discover
• other
• wallet: Paypal

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