( Brand: Aircraft Radio Corp ), ( Manufacturer Part Number: 411240-0101 ), ( Part Type: Receiver ), ( Country Of Origin: United States )
Review AIRCRAFT RADIO CORP Arc Adf Receiver P/n Cessna Nav Parts Only
The **Cessna Aircraft Radio Model 411240-0101 ARC R-546E ADF Receiver** is a robust, high-performance Automatic Direction Finder (ADF) unit designed specifically for general aviation aircraft, offering pilots precise navigation capabilities in both VFR and IFR conditions. Part of Cessna s trusted line of avionics, this ADF receiver is engineered to provide reliable non-directional beacon (NDB) navigation, ensuring accurate ground-based radio signal tracking for en route, terminal, and approach phases of flight. The R-546E operates within the standard ADF frequency range of 190 1750 kHz, allowing pilots to tune into NDBs for essential navigation aids such as VOR/DME stations, airport beacons, and other ground-based transmitters, which are critical for low-altitude flying, cross-country navigation, and instrument approaches in areas where GPS or VOR coverage may be limited. Its compact yet durable construction integrates seamlessly into Cessna aircraft interiors, featuring a clean, functional interface with intuitive controls for tuning, sensitivity adjustment, and signal strength monitoring. The unit employs advanced signal processing to minimize interference and enhance accuracy, making it a dependable choice for pilots who rely on traditional radio navigation methods. Whether used as a standalone system or in conjunction with other avionics, the R-546E ADF receiver delivers the reliability and precision needed for safe and efficient flight operations, particularly in regions where NDB-based navigation remains a vital component of airspace management. Built to meet stringent aviation industry standards, this receiver exemplifies Cessna s commitment to performance, durability, and ease of use, ensuring it remains a trusted tool for pilots across a wide range of general aviation applications.
### **Pros and Cons of buying a ARC R-546E ADF Receiver (P/N 411240-0101, Cessna-Compatible)**
#### **Pros:**1. **Compatibility with Cessna Aircraft** This unit is specifically designed for Cessna models, ensuring proper integration with existing avionics systems. It is a direct replacement for the Cessna Nav/ADF unit, reducing installation complexity.
2. **Reliable ADF Functionality** Automatic Direction Finder (ADF) remains a critical navigation tool in low-tech or backup systems, especially in areas where GPS signal reliability is questionable. The R-546E provides accurate non-directional beacon (NDB) reception, which is useful for VFR and IFR operations.
3. **Durable and Military-Grade Construction** The ARC R-546E is built to withstand harsh conditions, making it suitable for both general aviation and military use. Its robust design ensures longevity, even in demanding environments.
4. **Backward Compatibility** Many older Cessna aircraft rely on ADF for navigation, and this unit maintains that capability without requiring a full avionics upgrade. It can coexist with modern systems if needed.
5. **Proven Performance** The R-546E has been in use for decades, with a strong track record of reliability. Many pilots and operators trust ARC avionics for critical navigation functions.
6. **Ease of Installation** As a direct replacement for the Cessna Nav/ADF unit, it should fit seamlessly into existing wiring and mounting configurations, reducing downtime and labor costs.
7. **Cost-Effective for Basic Navigation Needs** If your primary navigation requirement is ADF-based (rather than GPS/WAAS), this unit provides a cost-effective solution compared to modern glass cockpit systems.
---
#### **Cons:**1. **Outdated Technology** ADF is becoming less common in modern aviation due to the decline of NDBs (many are being decommissioned). This unit relies on an aging navigation system that may not be as efficient or accurate as GPS-based solutions.
2. **Limited Integration with Modern Avionics** If your aircraft is equipped with modern glass cockpits (e.g., Garmin G3X, Avidyne), the R-546E may not integrate seamlessly with digital navigation displays. You may need additional interfaces or converters.
3. **Higher Maintenance Requirements** Older avionics units can be more prone to mechanical failures or require specialized technicians for repairs. Parts and service may be harder to find compared to newer systems.
4. **No Built-In GPS or WAAS Capability** Unlike modern ADF/GPS combo units, the R-546E does not provide WAAS (Wide Area Augmentation System) corrections, which improve GPS accuracy. This limits its usefulness in precision approaches.
5. **Potential for Signal Interference** ADF signals can be affected by electrical noise, terrain, or weather, leading to less reliable navigation compared to GPS in some conditions.
6. **Depreciation Over Time** As aviation shifts toward GPS-dependent navigation, the resale value of this unit may decline, especially if newer ADF/GPS hybrids become standard.
7. **Learning Curve for Pilots** If your crew is accustomed to digital navigation, transitioning back to analog ADF tuning and reading may require additional training.
---
### **Conclusion:**The **ARC R-546E ADF Receiver (P/N 411240-0101)** is a solid choice if your primary navigation needs are ADF-based and you operate in an environment where NDBs are still widely available. It offers reliability, durability, and direct compatibility with Cessna aircraft, making it a practical solution for pilots who prioritize analog navigation backups.
However, if your aircraft is equipped with modern avionics or if you rely heavily on GPS for precision navigation, this unit may feel outdated. In such cases, investing in an ADF/GPS hybrid unit or a full digital navigation system could be more future-proof.
### **Recommendation:** - **Buy it if:**- You operate in an area with active NDBs and rely on ADF for backup navigation.
- Your aircraft lacks modern GPS systems, and ADF is your primary navigation tool.
- You prefer a rugged, long-lasting unit with minimal electronic complexity.
- You are working within a budget that does not justify a full avionics upgrade.
- **Avoid or consider alternatives if:**- Your aircraft is equipped with modern glass cockpits, and you want seamless integration.
- You frequently fly in regions where NDBs are being phased out.
- You need WAAS-enabled approaches or advanced GPS features.
- You prioritize long-term maintainability and ease of use with digital systems.
For a balanced approach, some operators pair the R-546E with a secondary GPS unit to ensure redundancy without sacrificing modern navigation capabilities. If budget allows, an ADF/GPS combo unit (such as the Garmin GNC 255 or Bendix/King KMA 24) may offer the best of both worlds.
Details:
Manufacturer: Aircraft Radio Corporation. Model: R-546E. Vintage Automatic Direction Finder ADF receiver with mounting tray and wiring connector. Technical Specifications.
This Unit is untested and therefore designated as for Parts Only. Alternate Part Numbers Number P/N: 41240-0101. Please See Pictures for Details. Serial Number: 2829.
part #: 4112400101 prices
- $34.99-$170.00
specifications comnavavioni:
- for makes: Cessna
- brand: Aircraft Radio Corp
- mpn: 411240-0101
- part type: Receiver
- country of origin: United States
returns comnavavioni:
- policy: No Returns
payments comnavavioni:
- credit card: Visa
- wallet: Apple-pay
- other
offer comnavavioni:
- quantity: 1
- started: February 21, 2026
- best offers: True
- sold: 0
- availability: In Stock
- options: Ship-to-home
shipping comnavavioni:
- carrier: USPS, UPS
- type: Calculated
- service: USPS Ground Advantage, USPS Priority Mail, UPS 2nd Day Air, UPS Next Day Air Saver
- transit: 4-9 Days
- class: Standard, Expedited, One-day
- cost: $15.25
general comnavavioni:
- Aviation Parts Accessories > Avionics > NAV/COMs
- condition: For parts or not working
seller comnavavioni:
- rating: 100.0%
- city: Arcadia, Florida
- # reviews: 1024
Aircraft Radio Corp 411240-0101 Is Similar To:
- 0699-1019 King Aircraft Radio (24.6% similar) However as I have no means of testing it the sale is, guarantees etc. Casing is clean, indented etc. Father time has dictated this end to years of happy flying. The whole unit is very clean and in nice condition. Please see photos. The Radio on off, and nav off voice selectors easily into place, ...(May 18th, 2018)
- 0717000-12-17-a27 Cessna Aircraft 172 Bagage (21.7% similar) We at selling our surplus parts and Radios for cessna piper liquidating. Shipping 11. Only an estimate. This fits C172N 1977 thru C172P it has never been installed on a...(July 13th, 2017)
- Transceiver Nav Txn-960 Radio Aircraft 0900-0728-30 Terra (25% similar) ...(March 7th, 2015)
- 118-148 Mc Aircraft No Radio Corporation Receiver Serial (48.2% similar) Item is only available in the us. Shipping cost to Canada may vary...(February 8th, 2019)
- 12330-10 Dayton Aircraft Products Cessna (27.2% similar) Cessna L19 bird dog antenna tension spring assembly. Please see the photos. No sales outside the USA brand new, P/N hard to find...(November 10th, 2017)
- 1394t100-1 7rz Aircraft Radio And Control Arc (33.8% similar) Arc G-300A turn COORDINATOR42 4T100-1 7RZS...(March 8th, 2017)
- C-22a Audio Panel Aircraft Vintage Radio 196222a (27.1% similar) Being offered is this vintage Radio. This item is to be sold strictly as is. As such our boxes and packing materials are not free...(August 22nd, 2015)
- 1d-91a C-758-a Military Original Sabre Jet Aircraft Radio Compass (26.3% similar) Original F-86 sabre jet Radio compass set Korean war era an ARN-6 set consist of - control panel P/N C-758 a and 1D-91A instrument. They are from the estate of a former USAF F-86 sabre jet Korean war pilot who retired with bra niff airlines. This set is in very good cosmetic condition, and being ...(July 15th, 2018)
- 2070945-4311 Bendix King Type Aircraft Vhf Radio Transceiver (30.3% similar) The handle and locking feet are also in place. It is in good condition without damage to the housing or connector. Thanks again. This one has a parts tag showing removal from N953N during tear down and been in storage since. The data plate reads vhf transceiver, 2, RTA-43A, mod. 1-3, Bendix ding air...(October 19th, 2018)
- 22500 Aircraft Radio Corp Set Control Panel Vhf Nav Pn (46% similar) Purchase as is. Purchased at aery offer so status is unknown...(December 12th, 2018)
- 2618199-37 Cowan Radio Aircraft Switch (17.9% similar) Cowman Radio Aircraft switch assembly sold as is, removed 12-B box...(March 25th, 2017)
