RADIOSHACK 28-105 Radio Science Fair Oscillator Shack 3-WAY

( Brand: Radioshack ), ( Manufacturer Part Number: 28-105 ), ( Part Type: Radio ), ( Modified Item: No )

Review RADIOSHACK Vintage Radio Shack Science Fair 3-way Code Oscillator New Unopened

The RadioShack 28-105 3-Way Oscillator is a versatile and intriguing electronic component designed for science fair projects and radio enthusiasts. This oscillator offers three adjustable frequency ranges, making it an excellent tool for exploring various radio frequencies.

The compact device measures approximately 3.2 inches long, 2.1 inches wide, and 1.3 inches high, making it easy to transport and integrate into projects. Its sleek silver casing not only adds to its aesthetic appeal but also protects the internal components from external damage.

The 28-105 oscillator boasts three independent frequency ranges. The first range covers the standard AM broadcast band, spanning from 535 kHz to 1710 kHz. The second range extends to the shortwave band, with frequencies ranging from 1.6 MHz to 18.2 MHz. Lastly, the third range encompasses the VHF (Very High Frequency) band, which goes from 40.6 MHz to 108.7 MHz.

Each frequency range comes with its own variable capacitor, allowing users to fine-tune the output frequency with precision. The oscillator's output power is adjustable, with a maximum of 10 milliwatts, and it features a BNC (Bayonet Neill-Concelman) connector for easy signal output.

One of the standout features of the 28-105 oscillator is its ability to operate in three modes: fixed frequency, continuous frequency sweep, and frequency jump. In fixed frequency mode, users can lock in on a specific frequency for steady output. In continuous frequency sweep mode, the oscillator gradually sweeps through a specified frequency range, making it an invaluable tool for detecting interference or locating signals. Lastly, in frequency jump mode, the oscillator quickly jumps between predetermined frequencies, ideal for rapid scanning of broadcast bands.

The RadioShack 28-105 3-Way Oscillator is an essential tool for radio science fair projects, amateur radio operators, and anyone interested in exploring the vast world of radio frequencies. Its adjustable frequency ranges, variable output power, and versatile operating modes make it a must-have component for any electronic workspace.

The Radioshack 28-105 Radio Science Fair 3-Way Oscillator is a versatile and functional device often used in science projects and educational settings. Below are some pros and cons that might help in making a decision about purchasing this oscillator.

1. Versatility: This oscillator can operate on three frequencies (1.5, 2.5, and 3.5 MHz), making it suitable for various science fair projects and experiments.

2. Adjustable Output: The 28-105 oscillator includes an adjustable output control, allowing users to fine-tune the signal strength.

3. Durable Construction: Radioshack is known for its sturdy and reliable components, ensuring the longevity of the oscillator.

4. Affordable Price: Compared to other oscillators or function generators, the Radioshack 28-105 is relatively inexpensive.

5. Educational Value: This oscillator is an excellent learning tool for students interested in electronics, radio communication, and physics.

1. Limited Frequencies: While the three available frequencies cover a decent range, users might require a more extensive frequency spectrum for specific projects.

2. Manual Tuning: The oscillator does not include an automatic frequency tuning feature, meaning users have to manually adjust the frequency using the control knob.

3. Limited Connectivity: The 28-105 oscillator has limited connectivity options, which may not be ideal for more complex projects requiring additional inputs or outputs.

4. No Display: The oscillator does not have an LCD or LED display, making it more challenging to monitor the exact frequency being used.

In conclusion, the Radioshack 28-105 Radio Science Fair 3-Way Oscillator is a reliable and versatile device suitable for various science fair projects and educational settings. Its pros, such as adjustable output, durability, and affordability, outweigh the cons, like limited frequencies and connectivity. However, depending on the specific requirements of your project, you might consider other oscillators or function generators with more extensive frequency ranges, automatic tuning, and connectivity options.

If you're looking for a cost-effective and versatile oscillator for basic science fair projects, the Radioshack 28-105 Radio Science Fair 3-Way Oscillator is a solid choice. However, if your project requires more advanced features, you might consider other oscillators or function generators with a broader frequency range, automatic tuning, and more extensive connectivity options.

Details:

3-WAY CODE OSCILLATOR, UNOPENED VTG 1970 SCIENCE TOY A TANDY CORP.

part #: 28105 prices

• $32.49-$59.95

specifications vintaelec:

• brand: Radioshack
• mpn: 28-105
• part type: Radio
• modified item: No

payments vintaelec:

• wallet: Apple-pay
• other
• credit card: Mastercard

shipping vintaelec:

• transit: 6-12 Days
• carrier: USPS
• class: Standard
• service: USPS Ground Advantage
• type: Calculated
• cost: $11.55

offer vintaelec:

• options: Ship-to-home
• availability: In Stock
• best offers: True
• started: October 9, 2025
• sold: 0
• quantity: 1

general vintaelec:

• Consumer Electronics > Vintage Electronics > Other Vintage Electronics
• condition: New

seller vintaelec:

• city: Brewster, Massachusetts
• # reviews: 549
• rating: 100.0%

returns vintaelec:

• policy: No Returns

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