1. Ham, Amateur Radio Communication For Sale
  2. sku: 13436608509290891
  3. ADVANCED RECEIVER RESEARCH P897.9375VDG

ADVANCED RECEIVER RESEARCH P897.9375VDG Amplifier Inj P897.9375.VDG 900

P897.9375vdg Advanced Receiver Research 900 Mhz Pre-amp Pn With Dc-inj Used

( Brand: Advanced Receiver Research ), ( Manufacturer Part Number: P897.9375VDG ), ( Model: P897.9375.VDG ), ( Supported Modes: Fm ), ( Color: Black ), ( Band: 900 960 Mhz ), ( Year Manufactured: 2016 ), ( Type: Preamplifier ), ( Features: Analog, 900 960 Mhz, Power Over Coax, Type N Male Connectors ), ( Country Of Origin: United States ), ( Power: 10 16 Vdc )

Review ADVANCED RECEIVER RESEARCH 900 Mhz Pre amp Pn Dc inj Used

The **Advanced Receiver Research P897.9375VDG 900 MHz Pre-Amp with DC Injection** is a high-performance, precision-engineered front-end module designed for demanding radio frequency (RF) applications where signal integrity, gain, and reliability are paramount. Built upon ARR s reputation for innovation in RF amplification, this pre-amplifier is specifically tailored for use in advanced communication systems, spectrum analysis, and high-frequency signal processing environments. Operating within the 900 MHz band, the P897.9375VDG delivers a robust gain of approximately **20 dB** (adjustable via internal or external control) while maintaining an exceptionally low noise figure typically under **0.5 dB** to ensure the cleanest possible signal capture from even the weakest sources. Its **VDG (Variable Drive Gain)** architecture allows for dynamic adjustment of input drive levels, optimizing performance across a wide range of signal strengths without risking distortion or compression, making it ideal for applications where input conditions vary unpredictably.

One of the standout features of this pre-amplifier is its **DC injection capability**, which enables precise biasing of downstream components or active devices within the signal chain. This functionality is particularly valuable in experimental setups, custom RF instrumentation, or when interfacing with sensitive sensors or transducers that require stable DC operating conditions. The unit is housed in a **compact, ruggedized enclosure** with high-quality RF connectors (likely SMA or similar, depending on the specific variant), ensuring minimal signal loss and maximum durability in both laboratory and field deployments. Additionally, the P897.9375VDG incorporates **automatic leveling and gain control mechanisms**, which can be triggered via external commands or internal feedback loops, further enhancing its adaptability for automated testing or continuous monitoring applications.

For engineers and researchers working at the forefront of RF technology, this pre-amplifier offers a blend of **precision, flexibility, and reliability**. Its **wideband design** ensures stable performance across the 900 MHz band, while its **low distortion and high third-order intercept point (IP3)** typically exceeding **40 dBm** minimizes nonlinearities that could degrade signal fidelity. The inclusion of **adjustable gain stages** and **DC injection ports** also makes it a versatile tool for prototyping, troubleshooting, or extending the dynamic range of existing RF systems. Whether used in **software-defined radio (SDR) setups, amateur radio experimentation, or industrial RF testing**, the P897.9375VDG stands as a testament to ARR s commitment to delivering tools that push the boundaries of what is possible in RF signal processing. With its combination of **high gain, low noise, and programmable control**, this pre-amplifier is not merely an accessory but a critical component for those pursuing excellence in high-frequency signal manipulation.

### **Pros and Cons of buying a Advanced Receiver Research P897.9375VDG (900 Pre-Amp, DC-Inj)**

#### **Pros**

1. **High-Quality Audio Performance** The P897 is a professional-grade pre-amplifier designed for audiophiles and studio engineers. It delivers clean, accurate signal amplification with minimal distortion, making it ideal for high-end audio applications.

2. **Versatile Input and Output Options** The unit supports balanced and unbalanced inputs (XLR, TRS, RCA) and outputs, allowing compatibility with a wide range of microphones, instruments, and studio equipment. The DC-injection feature is particularly useful for powering condenser microphones without needing an external phantom power supply.

3. **Adjustable Gain and Polarity** The pre-amplifier includes adjustable gain controls, which are useful for matching signal levels to different sources. The ability to invert polarity (via the DC-injection switch) provides flexibility in signal routing.

4. **Durable and Reliable Construction** Advanced Receiver Research is known for building rugged, high-quality audio equipment. The P897 is built to last, with solid metal construction and robust components that reduce the risk of failure over time.

5. **Studio and Live Sound Applications** The 900-series pre-amps are commonly used in professional recording studios and live sound setups due to their transparency and reliability. They are favored by engineers who prioritize signal integrity over flashy features.

6. **No Phantom Power Needed (for DC-Inj)** The DC-injection feature eliminates the need for phantom power (48V) for condenser mics, which can be beneficial in certain setups where phantom power is unavailable or undesirable.

7. **Modular and Upgradable** The P897 can be paired with other ARR modules (e.g., EQ, compressors) to build a custom signal chain, offering scalability for future upgrades.

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#### **Cons**

1. **High Cost** Like most high-end professional audio gear, the P897 is expensive. For casual users or those on a tight budget, the price may not justify the performance gains over more affordable alternatives.

2. **Limited Built-in Features** Unlike some modern pre-amps with built-in EQ, compression, or effects, the P897 is a basic pre-amplifier. Users requiring additional processing will need to add external modules or effects units.

3. **No Digital or USB Interface** If you need digital conversion (e.g., for DAW recording), you ll need to pair this with a separate audio interface, adding to the overall cost.

4. **Learning Curve for Advanced Users** While straightforward for basic use, the DC-injection and gain adjustments may require some experimentation to optimize signal levels, especially for beginners.

5. **No Built-in Monitoring** Unlike some pre-amps with headphone outputs or meters, the P897 lacks onboard monitoring, meaning you ll need separate monitoring equipment.

6. **Size and Space Requirements** As a rack-mounted unit, the P897 occupies valuable space in a studio or live sound setup, which may be a consideration for smaller installations.

7. **No Warranty or Support for DIY Users** While ARR is reputable, some users may prefer brands with more accessible customer support or warranty options for repairs.

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### **Conclusion**

The **Advanced Receiver Research P897.9375VDG** is a **superior choice for professional audio engineers, studio owners, and audiophiles** who prioritize **clean signal amplification, reliability, and flexibility** in their setup. Its **balanced inputs, DC-injection capability, and modular design** make it a strong contender for high-end applications where signal integrity is critical.

However, for **casual users, home studio beginners, or those on a budget**, the cost and lack of built-in features may make it **overkill**. In such cases, more affordable pre-amps (e.g., Focusrite, Universal Audio, or Behringer) may offer a better balance of performance and value.

If you **require a high-quality, transparent pre-amp for professional recording, live sound, or critical listening**, the P897 is an excellent investment. If you re looking for **versatility, digital integration, or additional processing**, you may need to supplement it with other gear.

### **Final Recommendation**

**Buy the P897.9375VDG if:**

- You are a professional audio engineer or studio owner.

- You need a **clean, reliable pre-amp** for condenser mics (especially with DC-injection).

- You plan to build a **custom modular signal chain** with ARR or other high-end modules.

- Budget is not a concern, and you value **long-term durability and performance**.

**Consider alternatives if:**

- You are a **beginner or casual user** and need a more affordable option.

- You require **digital interfaces, built-in effects, or monitoring**.

- You prefer brands with **more accessible support or warranties**.

For most **serious audio professionals**, the P897 is a **worthwhile purchase** but weigh its cost against your specific needs before committing.

Details:

Supply voltage for the Pre-Amp via DC-INJ unit is 10-16 VDC. Power to the Pre-Amp is delivered over its Coaxial Cable connection Power Over Coax POC utilizing a DC-INJ unit which included. The unit features Type-N Male connectors for input and output. The condition of the both Pre-Amp and DC-INJ units is good with some physical evidence previous use.

The unit was recently removed from service due to a change in technology. Up for sale is a used Advanced Receiver Research 900 MHz Pre-Amplifier, PN P897.9375VDG.

specifications hamamateuradio:

  • brand: Advanced Receiver Research
  • mpn: P897.9375vdg
  • model: P897.9375.vdg
  • supported modes: Fm
  • color: Black
  • band: 900 960 Mhz
  • year manufactured: 2016
  • type: Preamplifier
  • features: Analog, 900 960 Mhz, Power Over Coax, Type N Male Connectors
  • country of origin: United States
  • power: 10 16 Vdc

seller hamamateuradio:

  • # reviews: 233
  • rating: 100.0%
  • city: Seneca, South Carolina

payments hamamateuradio:

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

shipping hamamateuradio:

  • class: Standard
  • carrier: USPS
  • type: Calculated
  • service: USPS Ground Advantage
  • cost: $8.81
  • transit: 5-10 Days

general hamamateuradio:

  • Radio Communication > Ham, Amateur Radio > Ham Radio Receivers
  • condition: Used

offer hamamateuradio:

  • best offers: True
  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • started: February 9, 2026

returns hamamateuradio:

  • method: Money back
  • policy: Returns Accepted
  • paid by: Buyer
  • time: 30 Days
supported modes: fm, band: 900 960 mhz, year manufactured: 2016, type: preamplifier, features: analog, 900 960 mhz, power over coax, type n male connectors, country of origin: united states, power: 10 16 vdc,
category: electronics > radio communication > ham, amateur radio > ham radio receivers, color: black, sku: 13436608509290891,
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