COLLINS 4-0042 Urr High Frequency Receiver Oscillator Module R-390A/URR

( Brand: Collins ), ( Manufacturer Part Number: 4-0042 ), ( Compatible Brand: R-390a, For Collins ), ( Type: Radio Module ), ( Unit Type: Unit ), ( Voltage: 115 Vac ), ( Compatible Model: R-390a ), ( Country Of Origin: United States ), ( To Fit: Ham Radio Receiver )

Review COLLINS R-390a/urr High Frequency Receiver Oscillator Module Part

The Collins 4-0042 R-390A/URR High Frequency Receiver Oscillator Module is a remarkable piece of electronics engineering, designed for high-performance applications in the radio frequency (RF) spectrum.

This module, from the reputable Collins Radio Company, operates at a frequency of 390 MHz, making it an ideal choice for various communication systems, including amateur radio, military, and scientific applications. The R-390A designation indicates its specific frequency band, while the URR suffix denotes the upgrade or reissue version of the original model.

The Collins 4-0042 is an oscillator module, meaning it generates a stable and precise output signal, essential for accurate frequency modulation and demodulation. The module's output power is rated at 10 milliwatts, sufficient for most short-range communication needs.

The module houses a 5-pin connector for easy integration into larger systems. The pin configuration includes power, ground, frequency output, and tuning input. The tuning input allows for external control of the module's output frequency, offering flexibility in system design.

Notably, the Collins 4-0042 R-390A/URR High Frequency Receiver Oscillator Module is renowned for its superior stability and low phase noise, contributing to clear and reliable communication. Its compact size (approximately 4.5 x 3.5 x 1.0 inches) and rugged construction make it suitable for both benchtop experiments and field deployment.

In summary, the Collins 4-0042 R-390A/URR High Frequency Receiver Oscillator Module is an essential tool for RF applications, offering high-precision frequency generation, excellent stability, and flexible integration options. Its proven performance and the backing of the Collins Radio Company make it a trusted choice for professionals and hobbyists alike.

Analysis of the Collins 4-0042 R-390A/URR High Frequency Receiver Oscillator Module

1. High Quality: Collins is a well-known brand in the radio communication industry, and the 4-0042 is often praised for its durability and reliable performance.

2. Frequency Stability: This module operates on a frequency of 390 MHz, making it suitable for various high-frequency applications. Its frequency stability is excellent, ensuring minimal drift over time.

3. Adjustable: The oscillator is adjustable, which can be beneficial for fine-tuning and calibration purposes.

4. Reputation: Collins products have a reputation for being well-engineered and built to last, which can provide peace of mind for those seeking a long-term solution.

1. Price: The Collins 4-0042 is more expensive compared to some other brands offering similar products. This may be a deterrent for those on a tight budget.

2. Limited Frequency Range: While it operates on a wide frequency, it is limited to 390 MHz. If you need a module for a different frequency range, you may need to look elsewhere.

3. Complexity: Depending on your level of expertise in electronic engineering, the setup and adjustment of this module might require a steep learning curve.

The Collins 4-0042 R-390A/URR High Frequency Receiver Oscillator Module is a high-quality, reliable, and adjustable oscillator module suitable for various high-frequency applications. However, its high price and limited frequency range may deter some potential buyers. If you are willing to invest in a high-performance oscillator and have the necessary expertise to set it up, this could be a great addition to your equipment. If budget is a concern or if you need a module for a different frequency range, you might want to consider other options on the market.

Details:

This listing is for a vintage Collins R-390A/URR Receiver Module Part 4-0042. We combine shipping for multiple items. 4-0042, Order No. It is in very good condition and was carefully removed from a working R-390A/URR ham radio.

23137-PC-60, Serial No. It has not been tested since the removal. The tube is in its respective socket and the rotary switch very good condition.

part #: 40042 prices

• $70.00-$699.99

specifications hamamateuradio:

• brand: Collins
• mpn: 4-0042
• compatible brand: R-390a, For Collins
• type: Radio Module
• unit type: Unit
• voltage: 115 Vac
• compatible model: R-390a
• country of origin: United States
• to fit: Ham Radio Receiver

returns hamamateuradio:

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

offer hamamateuradio:

• availability: In Stock
• options: Ship-to-home
• started: November 13, 2025
• quantity: 1
• sold: 0

shipping hamamateuradio:

• type: Calculated
• carrier: USPS
• service: USPS Ground Advantage
• transit: 12-20 Days
• cost: $17.05
• class: Standard

seller hamamateuradio:

• # reviews: 2524
• city: Louisburg, North Carolina
• rating: 99.9%

general hamamateuradio:

• Radio Communication > Ham, Amateur Radio > Other Ham Radio Equipment
• condition: Used

payments hamamateuradio:

• credit card: Visa
• wallet: Paypal
• other

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